Java API By Example, From Geeks To Geeks.

1 /******************************************************************************* 2  * Copyright (c) 2000, 2007 IBM Corporation and others. 3  * All rights reserved. This program and the accompanying materials 4  * are made available under the terms of the Eclipse Public License v1.0 5  * which accompanies this distribution, and is available at 6  * http://www.eclipse.org/legal/epl-v10.html 7  * 8  * Contributors: 9  * IBM Corporation - initial API and implementation 10  *******************************************************************************/ 11 package org.eclipse.swt; 12 13 14 import org.eclipse.swt.internal.*; 15 16 /** 17  * This class provides access to a small number of SWT system-wide 18  * methods, and in addition defines the public constants provided 19  * by SWT. 20  * <p> 21  * By defining constants like UP and DOWN in a single class, SWT 22  * can share common names and concepts at the same time minimizing 23  * the number of classes, names and constants for the application 24  * programmer. 25  * </p><p> 26  * Note that some of the constants provided by this class represent 27  * optional, appearance related aspects of widgets which are available 28  * either only on some window systems, or for a differing set of 29  * widgets on each window system. These constants are marked 30  * as <em>HINT</em>s. The set of widgets which support a particular 31  * <em>HINT</em> may change from release to release, although we typically 32  * will not withdraw support for a <em>HINT</em> once it is made available. 33  * </p> 34  */ 35   36 /* NOTE: 37  * Good javadoc coding style is to put the values of static final 38  * constants in the comments. This reinforces the fact that 39  * consumers are allowed to rely on the value (and they must 40  * since the values are compiled inline in their code). We 41  * can <em>not</em> change the values of these constants between 42  * releases. 43  */ 44 public class SWT { 45      46     /* Widget Event Constants */ 47      48     /** 49      * The null event type (value is 0). 50      * 51      * @since 3.0 52      */ 53     public static final int None = 0; 54      55     /** 56      * The key down event type (value is 1). 57      * 58      * @see org.eclipse.swt.widgets.Widget#addListener 59      * @see org.eclipse.swt.widgets.Display#addFilter 60      * @see org.eclipse.swt.widgets.Event 61      * 62      * @see org.eclipse.swt.widgets.Control#addKeyListener 63      * @see org.eclipse.swt.widgets.Tracker#addKeyListener 64      * @see org.eclipse.swt.events.KeyListener#keyPressed 65      * @see org.eclipse.swt.events.KeyEvent 66      */ 67     public static final int KeyDown = 1; 68      69     /** 70      * The key up event type (value is 2). 71      * 72      * @see org.eclipse.swt.widgets.Widget#addListener 73      * @see org.eclipse.swt.widgets.Display#addFilter 74      * @see org.eclipse.swt.widgets.Event 75      * 76      * @see org.eclipse.swt.widgets.Control#addKeyListener 77      * @see org.eclipse.swt.widgets.Tracker#addKeyListener 78      * @see org.eclipse.swt.events.KeyListener#keyReleased 79      * @see org.eclipse.swt.events.KeyEvent 80      */ 81     public static final int KeyUp = 2; 82      83     /** 84      * The mouse down event type (value is 3). 85      * 86      * @see org.eclipse.swt.widgets.Widget#addListener 87      * @see org.eclipse.swt.widgets.Display#addFilter 88      * @see org.eclipse.swt.widgets.Event 89      * 90      * @see org.eclipse.swt.widgets.Control#addMouseListener 91      * @see org.eclipse.swt.events.MouseListener#mouseDown 92      * @see org.eclipse.swt.events.MouseEvent 93      */ 94     public static final int MouseDown = 3; 95      96     /** 97      * The mouse up event type (value is 4). 98      * 99      * @see org.eclipse.swt.widgets.Widget#addListener 100      * @see org.eclipse.swt.widgets.Display#addFilter 101      * @see org.eclipse.swt.widgets.Event 102      * 103      * @see org.eclipse.swt.widgets.Control#addMouseListener 104      * @see org.eclipse.swt.events.MouseListener#mouseUp 105      * @see org.eclipse.swt.events.MouseEvent 106      */ 107     public static final int MouseUp = 4; 108      109     /** 110      * The mouse move event type (value is 5). 111      * 112      * @see org.eclipse.swt.widgets.Widget#addListener 113      * @see org.eclipse.swt.widgets.Display#addFilter 114      * @see org.eclipse.swt.widgets.Event 115      * 116      * @see org.eclipse.swt.widgets.Control#addMouseMoveListener 117      * @see org.eclipse.swt.events.MouseMoveListener#mouseMove 118      * @see org.eclipse.swt.events.MouseEvent 119      */ 120     public static final int MouseMove = 5; 121      122     /** 123      * The mouse enter event type (value is 6). 124      * 125      * @see org.eclipse.swt.widgets.Widget#addListener 126      * @see org.eclipse.swt.widgets.Display#addFilter 127      * @see org.eclipse.swt.widgets.Event 128      * 129      * @see org.eclipse.swt.widgets.Control#addMouseTrackListener 130      * @see org.eclipse.swt.events.MouseTrackListener#mouseEnter 131      * @see org.eclipse.swt.events.MouseEvent 132      */ 133     public static final int MouseEnter = 6; 134      135     /** 136      * The mouse exit event type (value is 7). 137      * 138      * @see org.eclipse.swt.widgets.Widget#addListener 139      * @see org.eclipse.swt.widgets.Display#addFilter 140      * @see org.eclipse.swt.widgets.Event 141      * 142      * @see org.eclipse.swt.widgets.Control#addMouseTrackListener 143      * @see org.eclipse.swt.events.MouseTrackListener#mouseExit 144      * @see org.eclipse.swt.events.MouseEvent 145      */ 146     public static final int MouseExit = 7; 147      148     /** 149      * The mouse double click event type (value is 8). 150      * 151      * @see org.eclipse.swt.widgets.Widget#addListener 152      * @see org.eclipse.swt.widgets.Display#addFilter 153      * @see org.eclipse.swt.widgets.Event 154      * 155      * @see org.eclipse.swt.widgets.Control#addMouseListener 156      * @see org.eclipse.swt.events.MouseListener#mouseDoubleClick 157      * @see org.eclipse.swt.events.MouseEvent 158      */ 159     public static final int MouseDoubleClick = 8; 160      161     /** 162      * The paint event type (value is 9). 163      * 164      * @see org.eclipse.swt.widgets.Widget#addListener 165      * @see org.eclipse.swt.widgets.Display#addFilter 166      * @see org.eclipse.swt.widgets.Event 167      * 168      * @see org.eclipse.swt.widgets.Control#addPaintListener 169      * @see org.eclipse.swt.events.PaintListener#paintControl 170      * @see org.eclipse.swt.events.PaintEvent 171      */ 172     public static final int Paint = 9; 173      174     /** 175      * The move event type (value is 10). 176      * 177      * @see org.eclipse.swt.widgets.Widget#addListener 178      * @see org.eclipse.swt.widgets.Display#addFilter 179      * @see org.eclipse.swt.widgets.Event 180      * 181      * @see org.eclipse.swt.widgets.Control#addControlListener 182      * @see org.eclipse.swt.widgets.TableColumn#addControlListener 183      * @see org.eclipse.swt.widgets.Tracker#addControlListener 184      * @see org.eclipse.swt.widgets.TreeColumn#addControlListener 185      * @see org.eclipse.swt.events.ControlListener#controlMoved 186      * @see org.eclipse.swt.events.ControlEvent 187      */ 188     public static final int Move = 10; 189      190     /** 191      * The resize event type (value is 11). 192      * 193      * @see org.eclipse.swt.widgets.Widget#addListener 194      * @see org.eclipse.swt.widgets.Display#addFilter 195      * @see org.eclipse.swt.widgets.Event 196      * 197      * @see org.eclipse.swt.widgets.Control#addControlListener 198      * @see org.eclipse.swt.widgets.TableColumn#addControlListener 199      * @see org.eclipse.swt.widgets.Tracker#addControlListener 200      * @see org.eclipse.swt.widgets.TreeColumn#addControlListener 201      * @see org.eclipse.swt.events.ControlListener#controlResized 202      * @see org.eclipse.swt.events.ControlEvent 203      */ 204     public static final int Resize = 11; 205      206     /** 207      * The dispose event type (value is 12). 208      * 209      * @see org.eclipse.swt.widgets.Widget#addListener 210      * @see org.eclipse.swt.widgets.Display#addListener 211      * @see org.eclipse.swt.widgets.Display#addFilter 212      * @see org.eclipse.swt.widgets.Event 213      * 214      * @see org.eclipse.swt.widgets.Widget#addDisposeListener 215      * @see org.eclipse.swt.events.DisposeListener#widgetDisposed 216      * @see org.eclipse.swt.events.DisposeEvent 217      */ 218     public static final int Dispose = 12; 219      220     /** 221      * The selection event type (value is 13). 222      * 223      * @see org.eclipse.swt.widgets.Widget#addListener 224      * @see org.eclipse.swt.widgets.Display#addFilter 225      * @see org.eclipse.swt.widgets.Event 226      * 227      * @see org.eclipse.swt.widgets.Button#addSelectionListener 228      * @see org.eclipse.swt.widgets.Combo#addSelectionListener 229      * @see org.eclipse.swt.widgets.CoolItem#addSelectionListener 230      * @see org.eclipse.swt.widgets.Link#addSelectionListener 231      * @see org.eclipse.swt.widgets.List#addSelectionListener 232      * @see org.eclipse.swt.widgets.MenuItem#addSelectionListener 233      * @see org.eclipse.swt.widgets.Sash#addSelectionListener 234      * @see org.eclipse.swt.widgets.Scale#addSelectionListener 235      * @see org.eclipse.swt.widgets.ScrollBar#addSelectionListener 236      * @see org.eclipse.swt.widgets.Slider#addSelectionListener 237      * @see org.eclipse.swt.widgets.TabFolder#addSelectionListener 238      * @see org.eclipse.swt.widgets.Table#addSelectionListener 239      * @see org.eclipse.swt.widgets.TableColumn#addSelectionListener 240      * @see org.eclipse.swt.widgets.ToolItem#addSelectionListener 241      * @see org.eclipse.swt.widgets.TrayItem#addSelectionListener 242      * @see org.eclipse.swt.widgets.Tree#addSelectionListener 243      * @see org.eclipse.swt.widgets.TreeColumn#addSelectionListener 244      * @see org.eclipse.swt.events.SelectionListener#widgetSelected 245      * @see org.eclipse.swt.events.SelectionEvent 246      */ 247     public static final int Selection = 13; 248      249     /** 250      * The default selection event type (value is 14). 251      * 252      * @see org.eclipse.swt.widgets.Widget#addListener 253      * @see org.eclipse.swt.widgets.Display#addFilter 254      * @see org.eclipse.swt.widgets.Event 255      * 256      * @see org.eclipse.swt.widgets.Combo#addSelectionListener 257      * @see org.eclipse.swt.widgets.List#addSelectionListener 258      * @see org.eclipse.swt.widgets.Spinner#addSelectionListener 259      * @see org.eclipse.swt.widgets.Table#addSelectionListener 260      * @see org.eclipse.swt.widgets.Text#addSelectionListener 261      * @see org.eclipse.swt.widgets.TrayItem#addSelectionListener 262      * @see org.eclipse.swt.widgets.Tree#addSelectionListener 263      * @see org.eclipse.swt.events.SelectionListener#widgetDefaultSelected 264      * @see org.eclipse.swt.events.SelectionEvent 265      */ 266     public static final int DefaultSelection = 14; 267      268     /** 269      * The focus in event type (value is 15). 270      * 271      * @see org.eclipse.swt.widgets.Widget#addListener 272      * @see org.eclipse.swt.widgets.Display#addFilter 273      * @see org.eclipse.swt.widgets.Event 274      * 275      * @see org.eclipse.swt.widgets.Control#addFocusListener 276      * @see org.eclipse.swt.events.FocusListener#focusGained 277      * @see org.eclipse.swt.events.FocusEvent 278      */ 279     public static final int FocusIn = 15; 280      281     /** 282      * The focus out event type (value is 16). 283      * 284      * @see org.eclipse.swt.widgets.Widget#addListener 285      * @see org.eclipse.swt.widgets.Display#addFilter 286      * @see org.eclipse.swt.widgets.Event 287      * 288      * @see org.eclipse.swt.widgets.Control#addFocusListener 289      * @see org.eclipse.swt.events.FocusListener#focusLost 290      * @see org.eclipse.swt.events.FocusEvent 291      */ 292     public static final int FocusOut = 16; 293      294     /** 295      * The expand event type (value is 17). 296      * 297      * @see org.eclipse.swt.widgets.Widget#addListener 298      * @see org.eclipse.swt.widgets.Display#addFilter 299      * @see org.eclipse.swt.widgets.Event 300      * 301      * @see org.eclipse.swt.widgets.Tree#addTreeListener 302      * @see org.eclipse.swt.events.TreeListener#treeExpanded 303      * @see org.eclipse.swt.events.TreeEvent 304      */ 305     public static final int Expand = 17; 306      307     /** 308      * The collapse event type (value is 18). 309      * 310      * @see org.eclipse.swt.widgets.Widget#addListener 311      * @see org.eclipse.swt.widgets.Display#addFilter 312      * @see org.eclipse.swt.widgets.Event 313      * 314      * @see org.eclipse.swt.widgets.Tree#addTreeListener 315      * @see org.eclipse.swt.events.TreeListener#treeCollapsed 316      * @see org.eclipse.swt.events.TreeEvent 317      */ 318     public static final int Collapse = 18; 319      320     /** 321      * The iconify event type (value is 19). 322      * 323      * @see org.eclipse.swt.widgets.Widget#addListener 324      * @see org.eclipse.swt.widgets.Display#addFilter 325      * @see org.eclipse.swt.widgets.Event 326      * 327      * @see org.eclipse.swt.widgets.Shell#addShellListener 328      * @see org.eclipse.swt.events.ShellListener#shellIconified 329      * @see org.eclipse.swt.events.ShellEvent 330      */ 331     public static final int Iconify = 19; 332      333     /** 334      * The de-iconify event type (value is 20). 335      * 336      * @see org.eclipse.swt.widgets.Widget#addListener 337      * @see org.eclipse.swt.widgets.Display#addFilter 338      * @see org.eclipse.swt.widgets.Event 339      * 340      * @see org.eclipse.swt.widgets.Shell#addShellListener 341      * @see org.eclipse.swt.events.ShellListener#shellDeiconified 342      * @see org.eclipse.swt.events.ShellEvent 343      */ 344     public static final int Deiconify = 20; 345      346     /** 347      * The close event type (value is 21). 348      * 349      * @see org.eclipse.swt.widgets.Widget#addListener 350      * @see org.eclipse.swt.widgets.Display#addListener 351      * @see org.eclipse.swt.widgets.Display#addFilter 352      * @see org.eclipse.swt.widgets.Event 353      * 354      * @see org.eclipse.swt.widgets.Shell#addShellListener 355      * @see org.eclipse.swt.events.ShellListener#shellClosed 356      * @see org.eclipse.swt.events.ShellEvent 357      */ 358     public static final int Close = 21; 359      360     /** 361      * The show event type (value is 22). 362      * 363      * @see org.eclipse.swt.widgets.Widget#addListener 364      * @see org.eclipse.swt.widgets.Display#addFilter 365      * @see org.eclipse.swt.widgets.Event 366      * 367      * @see org.eclipse.swt.widgets.Menu#addMenuListener 368      * @see org.eclipse.swt.events.MenuListener#menuShown 369      * @see org.eclipse.swt.events.MenuEvent 370      */ 371     public static final int Show = 22; 372      373     /** 374      * The hide event type (value is 23). 375      * 376      * @see org.eclipse.swt.widgets.Widget#addListener 377      * @see org.eclipse.swt.widgets.Display#addFilter 378      * @see org.eclipse.swt.widgets.Event 379      * 380      * @see org.eclipse.swt.widgets.Menu#addMenuListener 381      * @see org.eclipse.swt.events.MenuListener#menuHidden 382      * @see org.eclipse.swt.events.MenuEvent 383      */ 384     public static final int Hide = 23; 385      386     /** 387      * The modify event type (value is 24). 388      * 389      * @see org.eclipse.swt.widgets.Widget#addListener 390      * @see org.eclipse.swt.widgets.Display#addFilter 391      * @see org.eclipse.swt.widgets.Event 392      * 393      * @see org.eclipse.swt.widgets.Combo#addModifyListener 394      * @see org.eclipse.swt.widgets.Spinner#addModifyListener 395      * @see org.eclipse.swt.widgets.Text#addModifyListener 396      * @see org.eclipse.swt.events.ModifyListener#modifyText 397      * @see org.eclipse.swt.events.ModifyEvent 398      */ 399     public static final int Modify = 24; 400      401     /** 402      * The verify event type (value is 25). 403      * 404      * @see org.eclipse.swt.widgets.Widget#addListener 405      * @see org.eclipse.swt.widgets.Display#addFilter 406      * @see org.eclipse.swt.widgets.Event 407      * 408      * @see org.eclipse.swt.widgets.Combo#addVerifyListener 409      * @see org.eclipse.swt.widgets.Text#addVerifyListener 410      * @see org.eclipse.swt.events.VerifyListener#verifyText 411      * @see org.eclipse.swt.events.VerifyEvent 412      */ 413     public static final int Verify = 25; 414      415     /** 416      * The activate event type (value is 26). 417      * 418      * @see org.eclipse.swt.widgets.Widget#addListener 419      * @see org.eclipse.swt.widgets.Display#addFilter 420      * @see org.eclipse.swt.widgets.Event 421      * 422      * @see org.eclipse.swt.widgets.Shell#addShellListener 423      * @see org.eclipse.swt.events.ShellListener#shellActivated 424      * @see org.eclipse.swt.events.ShellEvent 425      */ 426     public static final int Activate = 26; 427      428     /** 429      * The deactivate event type (value is 27). 430      * 431      * @see org.eclipse.swt.widgets.Widget#addListener 432      * @see org.eclipse.swt.widgets.Display#addFilter 433      * @see org.eclipse.swt.widgets.Event 434      * 435      * @see org.eclipse.swt.widgets.Shell#addShellListener 436      * @see org.eclipse.swt.events.ShellListener#shellDeactivated 437      * @see org.eclipse.swt.events.ShellEvent 438      */ 439     public static final int Deactivate = 27; 440      441     /** 442      * The help event type (value is 28). 443      * 444      * @see org.eclipse.swt.widgets.Widget#addListener 445      * @see org.eclipse.swt.widgets.Display#addFilter 446      * @see org.eclipse.swt.widgets.Event 447      * 448      * @see org.eclipse.swt.widgets.Control#addHelpListener 449      * @see org.eclipse.swt.widgets.Menu#addHelpListener 450      * @see org.eclipse.swt.widgets.MenuItem#addHelpListener 451      * @see org.eclipse.swt.events.HelpListener#helpRequested 452      * @see org.eclipse.swt.events.HelpEvent 453      */ 454     public static final int Help = 28; 455      456     /** 457      * The drag detect event type (value is 29). 458      * 459      * @see org.eclipse.swt.widgets.Widget#addListener 460      * @see org.eclipse.swt.widgets.Display#addFilter 461      * @see org.eclipse.swt.widgets.Event 462      * 463      * @see org.eclipse.swt.dnd.DragSource 464      */ 465     public static final int DragDetect = 29; 466      467     /** 468      * The arm event type (value is 30). 469      * 470      * @see org.eclipse.swt.widgets.Widget#addListener 471      * @see org.eclipse.swt.widgets.Display#addFilter 472      * @see org.eclipse.swt.widgets.Event 473      * 474      * @see org.eclipse.swt.widgets.MenuItem#addArmListener 475      * @see org.eclipse.swt.events.ArmListener#widgetArmed 476      * @see org.eclipse.swt.events.ArmEvent 477      */ 478     public static final int Arm = 30; 479      480     /** 481      * The traverse event type (value is 31). 482      * 483      * @see org.eclipse.swt.widgets.Widget#addListener 484      * @see org.eclipse.swt.widgets.Display#addFilter 485      * @see org.eclipse.swt.widgets.Event 486      * 487      * @see org.eclipse.swt.widgets.Control#addTraverseListener 488      * @see org.eclipse.swt.events.TraverseListener#keyTraversed 489      * @see org.eclipse.swt.events.TraverseEvent 490      */ 491     public static final int Traverse = 31; 492      493     /** 494      * The mouse hover event type (value is 32). 495      * 496      * @see org.eclipse.swt.widgets.Widget#addListener 497      * @see org.eclipse.swt.widgets.Display#addFilter 498      * @see org.eclipse.swt.widgets.Event 499      * 500      * @see org.eclipse.swt.widgets.Control#addMouseTrackListener 501      * @see org.eclipse.swt.events.MouseTrackListener#mouseHover 502      * @see org.eclipse.swt.events.MouseEvent 503      */ 504     public static final int MouseHover = 32; 505 506     /** 507      * The hardware key down event type (value is 33). 508      * 509      * @see org.eclipse.swt.widgets.Widget#addListener 510      * @see org.eclipse.swt.widgets.Display#addFilter 511      * @see org.eclipse.swt.widgets.Event 512      */ 513     public static final int HardKeyDown = 33; 514      515     /** 516      * The hardware key up event type (value is 34). 517      * 518      * @see org.eclipse.swt.widgets.Widget#addListener 519      * @see org.eclipse.swt.widgets.Display#addFilter 520      * @see org.eclipse.swt.widgets.Event 521      */ 522     public static final int HardKeyUp = 34; 523 524     /** 525      * The menu detect event type (value is 35). 526      * 527      * @see org.eclipse.swt.widgets.Widget#addListener 528      * @see org.eclipse.swt.widgets.Display#addFilter 529      * @see org.eclipse.swt.widgets.Event 530      * 531      * @since 3.0 532      */ 533     public static final int MenuDetect = 35; 534      535     /** 536      * The set data event type (value is 36). 537      * 538      * @see org.eclipse.swt.widgets.Widget#addListener 539      * @see org.eclipse.swt.widgets.Display#addFilter 540      * @see org.eclipse.swt.widgets.Event 541      * 542      * @see org.eclipse.swt.widgets.Table 543      * @see org.eclipse.swt.widgets.Tree 544      * 545      * @since 3.0 546      */ 547     public static final int SetData = 36; 548 549     /** 550      * The mouse wheel event type (value is 37). 551      * 552      * @see org.eclipse.swt.widgets.Widget#addListener 553      * @see org.eclipse.swt.widgets.Display#addFilter 554      * @see org.eclipse.swt.widgets.Event 555      * 556      * @since 3.1 557      */ 558     public static final int MouseWheel = 37; 559 560     /** 561      * The settings changed event type (value is 39). 562      * <p> 563      * The settings changed event is sent when an operating system 564      * property, such as a system font or color, has been changed. 565      * The event occurs after the property has been changed, but 566      * before any widget is redrawn. Applications that cache operating 567      * system properties can use this event to update their caches. 568      * A specific property change can be detected by querying the 569      * new value of a property and comparing it with the equivalent 570      * cached value. The operating system automatically redraws and 571      * lays out all widgets after this event is sent. 572      * </p> 573      * 574      * @see org.eclipse.swt.widgets.Display#addListener 575      * @see org.eclipse.swt.widgets.Event 576      * 577      * @since 3.2 578      */ 579     public static final int Settings = 39; 580      581     /** 582      * The erase item event type (value is 40). 583      * 584      * @see org.eclipse.swt.widgets.Widget#addListener 585      * @see org.eclipse.swt.widgets.Display#addFilter 586      * @see org.eclipse.swt.widgets.Event 587      * 588      * @since 3.2 589      */ 590     public static final int EraseItem = 40; 591      592     /** 593      * The measure item event type (value is 41). 594      * 595      * @see org.eclipse.swt.widgets.Widget#addListener 596      * @see org.eclipse.swt.widgets.Display#addFilter 597      * @see org.eclipse.swt.widgets.Event 598      * 599      * @since 3.2 600      */ 601     public static final int MeasureItem = 41; 602      603     /** 604      * The paint item event type (value is 42). 605      * 606      * @see org.eclipse.swt.widgets.Widget#addListener 607      * @see org.eclipse.swt.widgets.Display#addFilter 608      * @see org.eclipse.swt.widgets.Event 609      * 610      * @since 3.2 611      */ 612     public static final int PaintItem = 42; 613      614     /* Event Details */ 615 616     /** 617      * Indicates that a user-interface component is being dragged, 618      * for example dragging the thumb of a scroll bar (value is 1). 619      */ 620     public static final int DRAG = 1; 621      622     /** 623      * Event detail field that indicates a user-interface component 624      * state is selected (value is 1&lt;&lt;1). 625      * 626      * @since 3.2 627      */ 628     public static final int SELECTED = 1 << 1; 629      630     /** 631      * Event detail field that indicates a user-interface component 632      * state is focused (value is 1&lt;&lt;2). 633      * 634      * @since 3.2 635      */ 636     public static final int FOCUSED = 1 << 2; 637      638     /** 639      * Event detail field that indicates a user-interface component 640      * draws the background (value is 1&lt;&lt;3). 641      * 642      * @since 3.2 643      */ 644     public static final int BACKGROUND = 1 << 3; 645      646     /** 647      * Event detail field that indicates a user-interface component 648      * draws the foreground (value is 1&lt;&lt;4). 649      * 650      * @since 3.2 651      */ 652     public static final int FOREGROUND = 1 << 4; 653      654     /** 655      * Event detail field that indicates a user-interface component 656      * state is hot (value is 1&lt;&lt;5). 657      * 658      * @since 3.3 659      */ 660     public static final int HOT = 1 << 5; 661      662     /* This code is intentionally commented */ 663     //public static final int PRESSED = 1 << 3; 664 //public static final int ACTIVE = 1 << 4; 665 //public static final int DISABLED = 1 << 5; 666 //public static final int HOT = 1 << 6; 667 //public static final int DEFAULTED = 1 << 7; 668 669     /** 670      * Traversal event detail field value indicating that no 671      * traversal action should be taken 672      * (value is 0). 673      */ 674     public static final int TRAVERSE_NONE = 0; 675      676     /** 677      * Traversal event detail field value indicating that the 678      * key which designates that a dialog should be cancelled was 679      * pressed; typically, this is the ESC key 680      * (value is 1&lt;&lt;1). 681      */ 682     public static final int TRAVERSE_ESCAPE = 1 << 1; 683 684     /** 685      * Traversal event detail field value indicating that the 686      * key which activates the default button in a dialog was 687      * pressed; typically, this is the ENTER key 688      * (value is 1&lt;&lt;2). 689      */ 690     public static final int TRAVERSE_RETURN = 1 << 2; 691 692     /** 693      * Traversal event detail field value indicating that the 694      * key which designates that focus should be given to the 695      * previous tab group was pressed; typically, this is the 696      * SHIFT-TAB key sequence 697      * (value is 1&lt;&lt;3). 698      */ 699     public static final int TRAVERSE_TAB_PREVIOUS = 1 << 3; 700 701     /** 702      * Traversal event detail field value indicating that the 703      * key which designates that focus should be given to the 704      * next tab group was pressed; typically, this is the 705      * TAB key 706      * (value is 1&lt;&lt;4). 707      */ 708     public static final int TRAVERSE_TAB_NEXT = 1 << 4; 709 710     /** 711      * Traversal event detail field value indicating that the 712      * key which designates that focus should be given to the 713      * previous tab item was pressed; typically, this is either 714      * the LEFT-ARROW or UP-ARROW keys 715      * (value is 1&lt;&lt;5). 716      */ 717     public static final int TRAVERSE_ARROW_PREVIOUS = 1 << 5; 718 719     /** 720      * Traversal event detail field value indicating that the 721      * key which designates that focus should be given to the 722      * previous tab item was pressed; typically, this is either 723      * the RIGHT-ARROW or DOWN-ARROW keys 724      * (value is 1&lt;&lt;6). 725      */ 726     public static final int TRAVERSE_ARROW_NEXT = 1 << 6; 727 728     /** 729      * Traversal event detail field value indicating that a 730      * mnemonic key sequence was pressed 731      * (value is 1&lt;&lt;7). 732      */ 733     public static final int TRAVERSE_MNEMONIC = 1 << 7; 734 735     /** 736      * Traversal event detail field value indicating that the 737      * key which designates that the previous page of a multi-page 738      * window should be shown was pressed; typically, this 739      * is the CTRL-PAGEUP key sequence 740      * (value is 1&lt;&lt;8). 741      */ 742     public static final int TRAVERSE_PAGE_PREVIOUS = 1 << 8; 743      744     /** 745      * Traversal event detail field value indicating that the 746      * key which designates that the next page of a multi-page 747      * window should be shown was pressed; typically, this 748      * is the CTRL-PAGEDOWN key sequence 749      * (value is 1&lt;&lt;9). 750      */ 751     public static final int TRAVERSE_PAGE_NEXT = 1 << 9; 752 753     /** 754      * A constant known to be zero (0), typically used in operations 755      * which take bit flags to indicate that "no bits are set". 756      */ 757     public static final int NONE = 0; 758      759     /** 760      * A constant known to be zero (0), used in operations which 761      * take pointers to indicate a null argument. 762      */ 763     public static final int NULL = 0; 764      765     /** 766      * Indicates that a default should be used (value is -1). 767      */ 768     public static final int DEFAULT = -1; 769 770     /** 771      * Indicates that a property is off (value is 0). 772      * 773      * @since 3.1 774      */ 775     public static final int OFF = 0; 776      777     /** 778      * Indicates that a property is on (value is 1). 779      * 780      * @since 3.1 781      */ 782     public static final int ON = 1; 783 784     /** 785      * Indicates low quality (value is 1). 786      * 787      * @since 3.1 788      */ 789     public static final int LOW = 1; 790 791     /** 792      * Indicates high quality (value is 2). 793      * 794      * @since 3.1 795      */ 796     public static final int HIGH = 2; 797 798     /** 799      * Style constant for menu bar behavior (value is 1&lt;&lt;1). 800      * <p><b>Used By:</b><ul> 801      * <li><code>Menu</code></li> 802      * </ul></p> 803      */ 804     public static final int BAR = 1 << 1; 805 806     /** 807      * Style constant for drop down menu/list behavior (value is 1&lt;&lt;2). 808      * <p><b>Used By:</b><ul> 809      * <li><code>Menu</code></li> 810      * <li><code>ToolItem</code></li> 811      * <li><code>CoolItem</code></li> 812      * <li><code>Combo</code></li> 813      * </ul></p> 814      */ 815     public static final int DROP_DOWN = 1 << 2; 816 817     /** 818      * Style constant for pop up menu behavior (value is 1&lt;&lt;3). 819      * <p><b>Used By:</b><ul> 820      * <li><code>Menu</code></li> 821      * </ul></p> 822      */ 823     public static final int POP_UP = 1 << 3; 824 825     /** 826      * Style constant for line separator behavior (value is 1&lt;&lt;1). 827      * <p><b>Used By:</b><ul> 828      * <li><code>Label</code></li> 829      * <li><code>MenuItem</code></li> 830      * <li><code>ToolItem</code></li> 831      * </ul></p> 832      */ 833     public static final int SEPARATOR = 1 << 1; 834 835     /** 836      * Style constant for toggle button behavior (value is 1&lt;&lt;1). 837      * <p><b>Used By:</b><ul> 838      * <li><code>Button</code></li> 839      * </ul></p> 840      */ 841     public static final int TOGGLE = 1 << 1; 842 843     /** 844      * Style constant for arrow button behavior (value is 1&lt;&lt;2). 845      * <p><b>Used By:</b><ul> 846      * <li><code>Button</code></li> 847      * </ul></p> 848      */ 849     public static final int ARROW = 1 << 2; 850 851     /** 852      * Style constant for push button behavior (value is 1&lt;&lt;3). 853      * <p><b>Used By:</b><ul> 854      * <li><code>Button</code></li> 855      * <li><code>MenuItem</code></li> 856      * <li><code>ToolItem</code></li> 857      * </ul></p> 858      */ 859     public static final int PUSH = 1 << 3; 860 861     /** 862      * Style constant for radio button behavior (value is 1&lt;&lt;4). 863      * <p><b>Used By:</b><ul> 864      * <li><code>Button</code></li> 865      * <li><code>MenuItem</code></li> 866      * <li><code>ToolItem</code></li> 867      * </ul></p> 868      */ 869     public static final int RADIO = 1 << 4; 870 871     /** 872      * Style constant for check box behavior (value is 1&lt;&lt;5). 873      * <p><b>Used By:</b><ul> 874      * <li><code>Button</code></li> 875      * <li><code>MenuItem</code></li> 876      * <li><code>ToolItem</code></li> 877      * <li><code>Table</code></li> 878      * <li><code>Tree</code></li> 879      * </ul></p> 880      */ 881     public static final int CHECK = 1 << 5; 882 883     /** 884      * Style constant for cascade behavior (value is 1&lt;&lt;6). 885      * <p><b>Used By:</b><ul> 886      * <li><code>MenuItem</code></li> 887      * </ul></p> 888      */ 889     public static final int CASCADE = 1 << 6; 890 891     /** 892      * Style constant for multi-selection behavior in lists 893      * and multiple line support on text fields (value is 1&lt;&lt;1). 894      * <p><b>Used By:</b><ul> 895      * <li><code>Text</code></li> 896      * <li><code>List</code></li> 897      * <li><code>FileDialog</code></li> 898      * </ul></p> 899      */ 900     public static final int MULTI = 1 << 1; 901 902     /** 903      * Style constant for single selection behavior in lists 904      * and single line support on text fields (value is 1&lt;&lt;2). 905      * <p><b>Used By:</b><ul> 906      * <li><code>Text</code></li> 907      * <li><code>List</code></li> 908      * <li><code>Table</code></li> 909      * <li><code>Tree</code></li> 910      * </ul></p> 911      */ 912     public static final int SINGLE = 1 << 2; 913 914     /** 915      * Style constant for read-only behavior (value is 1&lt;&lt;3). 916      * <p><b>Used By:</b><ul> 917      * <li><code>Combo</code></li> 918      * <li><code>Text</code></li> 919      * </ul></p> 920      */ 921     public static final int READ_ONLY = 1 << 3; 922 923     /** 924      * Style constant for automatic line wrap behavior (value is 1&lt;&lt;6). 925      * <p><b>Used By:</b><ul> 926      * <li><code>Label</code></li> 927      * <li><code>Text</code></li> 928      * <li><code>ToolBar</code></li> 929      * <li><code>Spinner</code></li> 930      * </ul></p> 931      */ 932     public static final int WRAP = 1 << 6; 933 934     /** 935      * Style constant for search behavior (value is 1&lt;&lt;7). 936      * <p><b>Used By:</b><ul> 937      * <li><code>Text</code></li> 938      * </ul></p> 939      * 940      * @since 3.3 941      */ 942     public static final int SEARCH = 1 << 7; 943 944     /** 945      * Style constant for simple (not drop down) behavior (value is 1&lt;&lt;6). 946      * <p><b>Used By:</b><ul> 947      * <li><code>Combo</code></li> 948      * </ul></p> 949      */ 950     public static final int SIMPLE = 1 << 6; 951 952     /** 953      * Style constant for password behavior (value is 1&lt;&lt;22). 954      * <p><b>Used By:</b><ul> 955      * <li><code>Text</code></li> 956      * </ul></p> 957      * 958      * @since 3.0 959      */ 960     public static final int PASSWORD = 1 << 22; 961      962     /** 963      * Style constant for shadow in behavior (value is 1&lt;&lt;2). 964      * <br>Note that this is a <em>HINT</em>. 965      * <p><b>Used By:</b><ul> 966      * <li><code>Label</code></li> 967      * <li><code>Group</code></li> 968      * </ul></p> 969      */ 970     public static final int SHADOW_IN = 1 << 2; 971 972     /** 973      * Style constant for shadow out behavior (value is 1&lt;&lt;3). 974      * <br>Note that this is a <em>HINT</em>. 975      * <p><b>Used By:</b><ul> 976      * <li><code>Label</code></li> 977      * <li><code>Group</code></li> 978      * <li><code>ToolBar</code></li> 979      * </ul></p> 980      */ 981     public static final int SHADOW_OUT = 1 << 3; 982 983     /** 984      * Style constant for shadow etched in behavior (value is 1&lt;&lt;4). 985      * <br>Note that this is a <em>HINT</em>. It is ignored on all platforms except Motif. 986      * <p><b>Used By:</b><ul> 987      * <li><code>Group</code></li> 988      * </ul></p> 989      */ 990     public static final int SHADOW_ETCHED_IN = 1 << 4; 991 992     /** 993      * Style constant for shadow etched out behavior (value is 1&lt;&lt;6). 994      * <br>Note that this is a <em>HINT</em>. It is ignored on all platforms except Motif. 995      * <p><b>Used By:</b><ul> 996      * <li><code>Group</code></li> 997      * </ul></p> 998      */ 999     public static final int SHADOW_ETCHED_OUT = 1 << 6; 1000 1001    /** 1002     * Style constant for no shadow behavior (value is 1&lt;&lt;5). 1003     * <br>Note that this is a <em>HINT</em>. 1004     * <p><b>Used By:</b><ul> 1005     * <li><code>Label</code></li> 1006     * <li><code>Group</code></li> 1007     * </ul></p> 1008     */ 1009    public static final int SHADOW_NONE = 1 << 5; 1010 1011    /** 1012     * Style constant for progress bar behavior (value is 1&lt;&lt;1). 1013     * <p><b>Used By:</b><ul> 1014     * <li><code>ProgressBar</code></li> 1015     * </ul></p> 1016     */ 1017    public static final int INDETERMINATE = 1 << 1; 1018     1019    /** 1020     * Style constant for tool window behavior (value is 1&lt;&lt;2). 1021     * <p> 1022     * A tool window is a window intended to be used as a floating toolbar. 1023     * It typically has a title bar that is shorter than a normal title bar, 1024     * and the window title is typically drawn using a smaller font. 1025     * <br>Note that this is a <em>HINT</em>. 1026     * </p><p><b>Used By:</b><ul> 1027     * <li><code>Decorations</code> and subclasses</li> 1028     * </ul></p> 1029     */ 1030    public static final int TOOL = 1 << 2; 1031 1032    /** 1033     * Style constant to ensure no trimmings are used (value is 1&lt;&lt;3). 1034     * <br>Note that this overrides all other trim styles. 1035     * <p><b>Used By:</b><ul> 1036     * <li><code>Decorations</code> and subclasses</li> 1037     * </ul></p> 1038     */ 1039    public static final int NO_TRIM = 1 << 3; 1040     1041    /** 1042     * Style constant for resize box trim (value is 1&lt;&lt;4). 1043     * <p><b>Used By:</b><ul> 1044     * <li><code>Decorations</code> and subclasses</li> 1045     * <li><code>Tracker</code></li> 1046     * </ul></p> 1047     */ 1048    public static final int RESIZE = 1 << 4; 1049 1050    /** 1051     * Style constant for title area trim (value is 1&lt;&lt;5). 1052     * <p><b>Used By:</b><ul> 1053     * <li><code>Decorations</code> and subclasses</li> 1054     * </ul></p> 1055     */ 1056    public static final int TITLE = 1 << 5; 1057 1058    /** 1059     * Style constant for close box trim (value is 1&lt;&lt;6, 1060     * since we do not distinguish between CLOSE style and MENU style). 1061     * <p><b>Used By:</b><ul> 1062     * <li><code>Decorations</code> and subclasses</li> 1063     * </ul></p> 1064     */ 1065    public static final int CLOSE = 1 << 6; 1066 1067    /** 1068     * Style constant for shell menu trim (value is 1&lt;&lt;6, 1069     * since we do not distinguish between CLOSE style and MENU style). 1070     * <p><b>Used By:</b><ul> 1071     * <li><code>Decorations</code> and subclasses</li> 1072     * </ul></p> 1073     */ 1074    public static final int MENU = CLOSE; 1075 1076    /** 1077     * Style constant for minimize box trim (value is 1&lt;&lt;7). 1078     * <p><b>Used By:</b><ul> 1079     * <li><code>Decorations</code> and subclasses</li> 1080     * </ul></p> 1081     */ 1082    public static final int MIN = 1 << 7; 1083 1084    /** 1085     * Style constant for maximize box trim (value is 1&lt;&lt;10). 1086     * <p><b>Used By:</b><ul> 1087     * <li><code>Decorations</code> and subclasses</li> 1088     * </ul></p> 1089     */ 1090    public static final int MAX = 1 << 10; 1091 1092    /** 1093     * Style constant for horizontal scrollbar behavior (value is 1&lt;&lt;8). 1094     * <p><b>Used By:</b><ul> 1095     * <li><code>Scrollable</code> and subclasses</li> 1096     * </ul></p> 1097     */ 1098    public static final int H_SCROLL = 1 << 8; 1099 1100    /** 1101     * Style constant for vertical scrollbar behavior (value is 1&lt;&lt;9). 1102     * <p><b>Used By:</b><ul> 1103     * <li><code>Scrollable</code> and subclasses</li> 1104     * </ul></p> 1105     */ 1106    public static final int V_SCROLL = 1 << 9; 1107 1108    /** 1109     * Style constant for bordered behavior (value is 1&lt;&lt;11). 1110     * <br>Note that this is a <em>HINT</em>. 1111     * <p><b>Used By:</b><ul> 1112     * <li><code>Control</code> and subclasses</li> 1113     * </ul></p> 1114     */ 1115    public static final int BORDER = 1 << 11; 1116 1117    /** 1118     * Style constant indicating that the window manager should clip 1119     * a widget's children with respect to its viewable area. (value is 1&lt;&lt;12). 1120     * <br>Note that this is a <em>HINT</em>. 1121     * <p><b>Used By:</b><ul> 1122     * <li><code>Control</code> and subclasses</li> 1123     * </ul></p> 1124     */ 1125    public static final int CLIP_CHILDREN = 1 << 12; 1126 1127    /** 1128     * Style constant indicating that the window manager should clip 1129     * a widget's siblings with respect to its viewable area. (value is 1&lt;&lt;13). 1130     * <br>Note that this is a <em>HINT</em>. 1131     * <p><b>Used By:</b><ul> 1132     * <li><code>Control</code> and subclasses</li> 1133     * </ul></p> 1134     */ 1135    public static final int CLIP_SIBLINGS = 1 << 13; 1136 1137    /** 1138     * Style constant for always on top behavior (value is 1&lt;&lt;14). 1139     * <br>Note that this is a <em>HINT</em>. 1140     * <p><b>Used By:</b><ul> 1141     * <li><code>Shell</code> and subclasses</li> 1142     * </ul></p> 1143     */ 1144    public static final int ON_TOP = 1 << 14; 1145 1146    /** 1147     * Trim style convenience constant for the most common top level shell appearance 1148     * (value is CLOSE|TITLE|MIN|MAX|RESIZE). 1149     * <p><b>Used By:</b><ul> 1150     * <li><code>Shell</code></li> 1151     * </ul></p> 1152     */ 1153    public static final int SHELL_TRIM = CLOSE | TITLE | MIN | MAX | RESIZE; 1154 1155    /** 1156     * Trim style convenience constant for the most common dialog shell appearance 1157     * (value is CLOSE|TITLE|BORDER). 1158     * <p><b>Used By:</b><ul> 1159     * <li><code>Shell</code></li> 1160     * </ul></p> 1161     */ 1162    public static final int DIALOG_TRIM = TITLE | CLOSE | BORDER; 1163 1164    /** 1165     * Style constant for modeless behavior (value is 0). 1166     * <br>Note that this is a <em>HINT</em>. 1167     * <p><b>Used By:</b><ul> 1168     * <li><code>Dialog</code></li> 1169     * <li><code>Shell</code></li> 1170     * </ul></p> 1171     */ 1172    public static final int MODELESS = 0; 1173 1174    /** 1175     * Style constant for primary modal behavior (value is 1&lt;&lt;15). 1176     * <br>Note that this is a <em>HINT</em>. 1177     * <p><b>Used By:</b><ul> 1178     * <li><code>Dialog</code></li> 1179     * <li><code>Shell</code></li> 1180     * </ul></p> 1181     */ 1182    public static final int PRIMARY_MODAL = 1 << 15; 1183 1184    /** 1185     * Style constant for application modal behavior (value is 1&lt;&lt;16). 1186     * <br>Note that this is a <em>HINT</em>. 1187     * <p><b>Used By:</b><ul> 1188     * <li><code>Dialog</code></li> 1189     * <li><code>Shell</code></li> 1190     * </ul></p> 1191     */ 1192    public static final int APPLICATION_MODAL = 1 << 16; 1193 1194    /** 1195     * Style constant for system modal behavior (value is 1&lt;&lt;17). 1196     * <br>Note that this is a <em>HINT</em>. 1197     * <p><b>Used By:</b><ul> 1198     * <li><code>Dialog</code></li> 1199     * <li><code>Shell</code></li> 1200     * </ul></p> 1201     */ 1202    public static final int SYSTEM_MODAL = 1 << 17; 1203 1204    /** 1205     * Style constant for selection hiding behavior when the widget loses focus (value is 1&lt;&lt;15). 1206     * <br>Note that this is a <em>HINT</em>. 1207     * <p><b>Used By:</b><ul> 1208     * <li><code>Table</code></li> 1209     * </ul></p> 1210     */ 1211    public static final int HIDE_SELECTION = 1 << 15; 1212 1213    /** 1214     * Style constant for full row selection behavior and 1215     * selection constant indicating that a full line should be 1216     * drawn. (value is 1&lt;&lt;16). 1217     * <br>Note that for some widgets this is a <em>HINT</em>. 1218     * <p><b>Used By:</b><ul> 1219     * <li><code>Table</code></li> 1220     * <li><code>Tree</code></li> 1221     * <li><code>StyledText</code></li> 1222     * <li><code>TextLayout</code></li> 1223     * </ul></p> 1224     */ 1225    public static final int FULL_SELECTION = 1 << 16; 1226 1227    /** 1228     * Style constant for flat appearance. (value is 1&lt;&lt;23). 1229     * <br>Note that this is a <em>HINT</em>. 1230     * <p><b>Used By:</b><ul> 1231     * <li><code>Button</code></li> 1232     * <li><code>ToolBar</code></li> 1233     * </ul></p> 1234     */ 1235    public static final int FLAT = 1 << 23; 1236 1237    /** 1238     * Style constant for smooth appearance. (value is 1&lt;&lt;16). 1239     * <br>Note that this is a <em>HINT</em>. 1240     * <p><b>Used By:</b><ul> 1241     * <li><code>ProgressBar</code></li> 1242     * <li><code>Sash</code></li> 1243     * </ul></p> 1244     */ 1245    public static final int SMOOTH = 1 << 16; 1246 1247    /** 1248     * Style constant for no background behavior (value is 1&lt;&lt;18). 1249     * <p> 1250     * By default, before a widget paints, the client area is filled with the current background. 1251     * When this style is specified, the background is not filled, and the application is responsible 1252     * for filling every pixel of the client area. 1253     * This style might be used as an alternative to "double-buffering" in order to reduce flicker. 1254     * This style does not mean "transparent" - widgets that are obscured will not draw through. 1255     * </p><p><b>Used By:</b><ul> 1256     * <li><code>Composite</code></li> 1257     * </ul></p> 1258     */ 1259    public static final int NO_BACKGROUND = 1 << 18; 1260 1261    /** 1262     * Style constant for no focus from the mouse behavior (value is 1&lt;&lt;19). 1263     * <br>Note that this is a <em>HINT</em>. 1264     * <p><b>Used By:</b><ul> 1265     * <li><code>Composite</code></li> 1266     * </ul></p> 1267     */ 1268    public static final int NO_FOCUS = 1 << 19; 1269 1270    /** 1271     * Style constant for no redraw on resize behavior (value is 1&lt;&lt;20). 1272     * <p> 1273     * This style stops the entire client area from being invalidated when the size 1274     * of the Canvas changes. Specifically, when the size of the Canvas gets smaller, 1275     * the SWT.Paint event is not sent. When it gets bigger, an SWT.Paint event is 1276     * sent with a GC clipped to only the new areas to be painted. Without this 1277     * style, the entire client area will be repainted. 1278     * </p><p><b>Used By:</b><ul> 1279     * <li><code>Composite</code></li> 1280     * </ul></p> 1281     */ 1282    public static final int NO_REDRAW_RESIZE = 1 << 20; 1283 1284    /** 1285     * Style constant for no paint event merging behavior (value is 1&lt;&lt;21). 1286     * <p><b>Used By:</b><ul> 1287     * <li><code>Composite</code></li> 1288     * </ul></p> 1289     */ 1290    public static final int NO_MERGE_PAINTS = 1 << 21; 1291 1292    /** 1293     * Style constant for preventing child radio group behavior (value is 1&lt;&lt;22). 1294     * <p><b>Used By:</b><ul> 1295     * <li><code>Composite</code></li> 1296     * </ul></p> 1297     */ 1298    public static final int NO_RADIO_GROUP = 1 << 22; 1299     1300    /** 1301     * Style constant for left to right orientation (value is 1&lt;&lt;25). 1302     * <p> 1303     * When orientation is not explicitly specified, orientation is 1304     * inherited. This means that children will be assigned the 1305     * orientation of their parent. To override this behavior and 1306     * force an orientation for a child, explicitly set the orientation 1307     * of the child when that child is created. 1308     * <br>Note that this is a <em>HINT</em>. 1309     * </p> 1310     * <p><b>Used By:</b><ul> 1311     * <li><code>Control</code></li> 1312     * <li><code>Menu</code></li> 1313     * <li><code>GC</code></li> 1314     * </ul></p> 1315     * 1316     * @since 2.1.2 1317     */ 1318    public static final int LEFT_TO_RIGHT = 1 << 25; 1319     1320    /** 1321     * Style constant for right to left orientation (value is 1&lt;&lt;26). 1322     * <p> 1323     * When orientation is not explicitly specified, orientation is 1324     * inherited. This means that children will be assigned the 1325     * orientation of their parent. To override this behavior and 1326     * force an orientation for a child, explicitly set the orientation 1327     * of the child when that child is created. 1328     * <br>Note that this is a <em>HINT</em>. 1329     * </p> 1330     * <p><b>Used By:</b><ul> 1331     * <li><code>Control</code></li> 1332     * <li><code>Menu</code></li> 1333     * <li><code>GC</code></li> 1334     * </ul></p> 1335     * 1336     * @since 2.1.2 1337     */ 1338    public static final int RIGHT_TO_LEFT = 1 << 26; 1339     1340    /** 1341     * Style constant to indicate coordinate mirroring (value is 1&lt;&lt;27). 1342     * <p><b>Used By:</b><ul> 1343     * <li><code>Control</code></li> 1344     * <li><code>Menu</code></li> 1345     * </ul></p> 1346     * 1347     * @since 2.1.2 1348     */ 1349    public static final int MIRRORED = 1 << 27; 1350     1351    /** 1352     * Style constant to allow embedding (value is 1&lt;&lt;24). 1353     * <p><b>Used By:</b><ul> 1354     * <li><code>Composite</code></li> 1355     * </ul></p> 1356     * 1357     * @since 3.0 1358     */ 1359    public static final int EMBEDDED = 1 << 24; 1360     1361    /** 1362     * Style constant to allow virtual data (value is 1&lt;&lt;28). 1363     * <p><b>Used By:</b><ul> 1364     * <li><code>Table</code></li> 1365     * <li><code>Tree</code></li> 1366     * </ul></p> 1367     * 1368     * @since 3.0 1369     */ 1370    public static final int VIRTUAL = 1 << 28; 1371 1372    /** 1373     * Style constant to indicate double buffering (value is 1&lt;&lt;29). 1374     * <p><b>Used By:</b><ul> 1375     * <li><code>Control</code></li> 1376     * </ul></p> 1377     * 1378     * @since 3.1 1379     */ 1380    public static final int DOUBLE_BUFFERED = 1 << 29; 1381     1382    /** 1383     * Style constant for align up behavior (value is 1&lt;&lt;7, 1384     * since align UP and align TOP are considered the same). 1385     * <p><b>Used By:</b><ul> 1386     * <li><code>Button</code> with <code>ARROW</code> style</li> 1387     * <li><code>Tracker</code></li> 1388     * </ul></p> 1389     */ 1390    public static final int UP = 1 << 7; 1391 1392    /** 1393     * Style constant for align top behavior (value is 1&lt;&lt;7, 1394     * since align UP and align TOP are considered the same). 1395     * <p><b>Used By:</b><ul> 1396     * <li><code>FormAttachment</code> in a <code>FormLayout</code></li> 1397     * </ul></p> 1398     */ 1399    public static final int TOP = UP; 1400 1401    /** 1402     * Style constant for align down behavior (value is 1&lt;&lt;10, 1403     * since align DOWN and align BOTTOM are considered the same). 1404     * <p><b>Used By:</b><ul> 1405     * <li><code>Button</code> with <code>ARROW</code> style</li> 1406     * <li><code>Tracker</code></li> 1407     * </ul></p> 1408     */ 1409    public static final int DOWN = 1 << 10; 1410 1411    /** 1412     * Style constant for align bottom behavior (value is 1&lt;&lt;10, 1413     * since align DOWN and align BOTTOM are considered the same). 1414     * <p><b>Used By:</b><ul> 1415     * <li><code>FormAttachment</code> in a <code>FormLayout</code></li> 1416     * </ul></p> 1417     */ 1418    public static final int BOTTOM = DOWN; 1419 1420    /** 1421     * Style constant for leading alignment (value is 1&lt;&lt;14). 1422     * <p><b>Used By:</b><ul> 1423     * <li><code>Button</code></li> 1424     * <li><code>Label</code></li> 1425     * <li><code>TableColumn</code></li> 1426     * <li><code>Tracker</code></li> 1427     * <li><code>FormAttachment</code> in a <code>FormLayout</code></li> 1428     * </ul></p> 1429     * 1430     * @since 2.1.2 1431     */ 1432    public static final int LEAD = 1 << 14; 1433     1434    /** 1435     * Style constant for align left behavior (value is 1&lt;&lt;14). 1436     * This is a synonym for LEAD (value is 1&lt;&lt;14). Newer 1437     * applications should use LEAD instead of LEFT to make code more 1438     * understandable on right-to-left platforms. 1439     */ 1440    public static final int LEFT = LEAD; 1441 1442    /** 1443     * Style constant for trailing alignment (value is 1&lt;&lt;17). 1444     * <p><b>Used By:</b><ul> 1445     * <li><code>Button</code></li> 1446     * <li><code>Label</code></li> 1447     * <li><code>TableColumn</code></li> 1448     * <li><code>Tracker</code></li> 1449     * <li><code>FormAttachment</code> in a <code>FormLayout</code></li> 1450     * </ul></p> 1451     * 1452     * @since 2.1.2 1453     */ 1454    public static final int TRAIL = 1 << 17; 1455         1456    /** 1457     * Style constant for align right behavior (value is 1&lt;&lt;17). 1458     * This is a synonym for TRAIL (value is 1&lt;&lt;17). Newer 1459     * applications should use TRAIL instead of RIGHT to make code more 1460     * understandable on right-to-left platforms. 1461     */ 1462    public static final int RIGHT = TRAIL; 1463 1464    /** 1465     * Style constant for align center behavior (value is 1&lt;&lt;24). 1466     * <p><b>Used By:</b><ul> 1467     * <li><code>Button</code></li> 1468     * <li><code>Label</code></li> 1469     * <li><code>TableColumn</code></li> 1470     * <li><code>FormAttachment</code> in a <code>FormLayout</code></li> 1471     * </ul></p> 1472     */ 1473    public static final int CENTER = 1 << 24; 1474 1475    /** 1476     * Style constant for horizontal alignment or orientation behavior (value is 1&lt;&lt;8). 1477     * <p><b>Used By:</b><ul> 1478     * <li><code>Label</code></li> 1479     * <li><code>ProgressBar</code></li> 1480     * <li><code>Sash</code></li> 1481     * <li><code>Scale</code></li> 1482     * <li><code>ScrollBar</code></li> 1483     * <li><code>Slider</code></li> 1484     * <li><code>ToolBar</code></li> 1485     * <li><code>FillLayout</code> type</li> 1486     * <li><code>RowLayout</code> type</li> 1487     * </ul></p> 1488     */ 1489    public static final int HORIZONTAL = 1 << 8; 1490 1491    /** 1492     * Style constant for vertical alignment or orientation behavior (value is 1&lt;&lt;9). 1493     * <p><b>Used By:</b><ul> 1494     * <li><code>Label</code></li> 1495     * <li><code>ProgressBar</code></li> 1496     * <li><code>Sash</code></li> 1497     * <li><code>Scale</code></li> 1498     * <li><code>ScrollBar</code></li> 1499     * <li><code>Slider</code></li> 1500     * <li><code>ToolBar</code></li> 1501     * <li><code>CoolBar</code></li> 1502     * <li><code>FillLayout</code> type</li> 1503     * <li><code>RowLayout</code> type</li> 1504     * </ul></p> 1505     */ 1506    public static final int VERTICAL = 1 << 9; 1507 1508    /** 1509     * Style constant for date display (value is 1&lt;&lt;5). 1510     * <p><b>Used By:</b><ul> 1511     * <li><code>DateTime</code></li> 1512     * </ul></p> 1513     * 1514     * @since 3.3 1515     */ 1516    public static final int DATE = 1 << 5; 1517 1518    /** 1519     * Style constant for time display (value is 1&lt;&lt;7). 1520     * <p><b>Used By:</b><ul> 1521     * <li><code>DateTime</code></li> 1522     * </ul></p> 1523     * 1524     * @since 3.3 1525     */ 1526    public static final int TIME = 1 << 7; 1527     1528    /** 1529     * Style constant for calendar display (value is 1&lt;&lt;10). 1530     * <p><b>Used By:</b><ul> 1531     * <li><code>DateTime</code></li> 1532     * </ul></p> 1533     * 1534     * @since 3.3 1535     */ 1536    public static final int CALENDAR = 1 << 10; 1537 1538    /** 1539     * Style constant for short date/time format (value is 1&lt;&lt;15). 1540     * <p> 1541     * A short date displays the month and year. 1542     * A short time displays hours and minutes. 1543     * <br>Note that this is a <em>HINT</em>. 1544     * </p> 1545     * <p><b>Used By:</b><ul> 1546     * <li><code>DateTime</code></li> 1547     * </ul></p> 1548     * 1549     * @since 3.3 1550     */ 1551    public static final int SHORT = 1 << 15; 1552 1553    /** 1554     * Style constant for medium date/time format (value is 1&lt;&lt;16). 1555     * <p> 1556     * A medium date displays the day, month and year. 1557     * A medium time displays hours, minutes, and seconds. 1558     * <br>Note that this is a <em>HINT</em>. 1559     * </p> 1560     * <p><b>Used By:</b><ul> 1561     * <li><code>DateTime</code></li> 1562     * </ul></p> 1563     * 1564     * @since 3.3 1565     */ 1566    public static final int MEDIUM = 1 << 16; 1567 1568    /** 1569     * Style constant for long date/time format (value is 1&lt;&lt;28). 1570     * <p> 1571     * A long date displays the day, month and year. 1572     * A long time displays hours, minutes, and seconds. 1573     * The day and month names may be displayed. 1574     * <br>Note that this is a <em>HINT</em>. 1575     * </p> 1576     * <p><b>Used By:</b><ul> 1577     * <li><code>DateTime</code></li> 1578     * </ul></p> 1579     * 1580     * @since 3.3 1581     */ 1582    public static final int LONG = 1 << 28; 1583 1584    /** 1585     * Style constant specifying that a Browser should use a Mozilla GRE 1586     * for rendering its content (value is 1&lt;&lt;15). 1587     * <p> 1588     * <p><b>Used By:</b><ul> 1589     * <li><code>Browser</code></li> 1590     * </ul></p> 1591     * 1592     * @since 3.3 1593     */ 1594    public static final int MOZILLA = 1 << 15; 1595 1596    /** 1597     * Style constant for balloon behavior (value is 1&lt;&lt;12). 1598     * <p><b>Used By:</b><ul> 1599     * <li><code>ToolTip</code></li> 1600     * </ul></p> 1601     * 1602     * @since 3.2 1603     */ 1604    public static final int BALLOON = 1 << 12; 1605     1606    /** 1607     * Style constant for vertical alignment or orientation behavior (value is 1). 1608     * <p><b>Used By:</b><ul> 1609     * <li><code>GridLayout</code> type</li> 1610     * </ul></p> 1611     */ 1612    public static final int BEGINNING = 1; 1613     1614    /** 1615     * Style constant for vertical alignment or orientation behavior (value is 4). 1616     * <p><b>Used By:</b><ul> 1617     * <li><code>GridLayout</code> type</li> 1618     * </ul></p> 1619     */ 1620    public static final int FILL = 4; 1621     1622    /** 1623     * Input Method Editor style constant for double byte 1624     * input behavior (value is 1&lt;&lt;1). 1625     */ 1626    public static final int DBCS = 1 << 1; 1627 1628    /** 1629     * Input Method Editor style constant for alpha 1630     * input behavior (value is 1&lt;&lt;2). 1631     */ 1632    public static final int ALPHA = 1 << 2; 1633 1634    /** 1635     * Input Method Editor style constant for native 1636     * input behavior (value is 1&lt;&lt;3). 1637     */ 1638    public static final int NATIVE = 1 << 3; 1639 1640    /** 1641     * Input Method Editor style constant for phonetic 1642     * input behavior (value is 1&lt;&lt;4). 1643     */ 1644    public static final int PHONETIC = 1 << 4; 1645 1646    /** 1647     * Input Method Editor style constant for romanicized 1648     * input behavior (value is 1&lt;&lt;5). 1649     */ 1650    public static final int ROMAN = 1 << 5; 1651 1652    /** 1653     * ASCII character convenience constant for the backspace character 1654     * (value is the <code>char</code> '\b'). 1655     */ 1656    public static final char BS = '\b'; 1657 1658    /** 1659     * ASCII character convenience constant for the carriage return character 1660     * (value is the <code>char</code> '\r'). 1661     */ 1662    public static final char CR = '\r'; 1663 1664    /** 1665     * ASCII character convenience constant for the delete character 1666     * (value is the <code>char</code> with value 127). 1667     */ 1668    public static final char DEL = 0x7F; 1669  1670    /** 1671     * ASCII character convenience constant for the escape character 1672     * (value is the <code>char</code> with value 27). 1673     */ 1674    public static final char ESC = 0x1B; 1675 1676    /** 1677     * ASCII character convenience constant for the line feed character 1678     * (value is the <code>char</code> '\n'). 1679     */ 1680    public static final char LF = '\n'; 1681 1682    /** 1683     * ASCII character convenience constant for the tab character 1684     * (value is the <code>char</code> '\t'). 1685     * 1686     * @since 2.1 1687     */ 1688    public static final char TAB = '\t'; 1689                         1690    /** 1691     * keyboard and/or mouse event mask indicating that the ALT key 1692     * was pushed on the keyboard when the event was generated 1693     * (value is 1&lt;&lt;16). 1694     */ 1695    public static final int ALT = 1 << 16; 1696                     1697    /** 1698     * Keyboard and/or mouse event mask indicating that the SHIFT key 1699     * was pushed on the keyboard when the event was generated 1700     * (value is 1&lt;&lt;17). 1701     */ 1702    public static final int SHIFT = 1 << 17; 1703                     1704    /** 1705     * Keyboard and/or mouse event mask indicating that the CTRL key 1706     * was pushed on the keyboard when the event was generated 1707     * (value is 1&lt;&lt;18). 1708     */ 1709    public static final int CTRL = 1 << 18; 1710 1711    /** 1712     * Keyboard and/or mouse event mask indicating that the CTRL key 1713     * was pushed on the keyboard when the event was generated. This 1714     * is a synonym for CTRL (value is 1&lt;&lt;18). 1715     */ 1716    public static final int CONTROL = CTRL; 1717 1718    /** 1719     * Keyboard and/or mouse event mask indicating that the COMMAND key 1720     * was pushed on the keyboard when the event was generated 1721     * (value is 1&lt;&lt;22). 1722     * 1723     * @since 2.1 1724     */ 1725    public static final int COMMAND = 1 << 22; 1726     1727    /** 1728     * Keyboard and/or mouse event mask indicating all possible 1729     * keyboard modifiers. 1730     * 1731     * To allow for the future, this mask is intended to be used in 1732     * place of code that references each individual keyboard mask. 1733     * For example, the following expression will determine whether 1734     * any modifier is pressed and will continue to work as new modifier 1735     * masks are added. 1736     * 1737     * <code>(stateMask & SWT.MODIFIER_MASK) != 0</code>. 1738     * 1739     * @since 2.1 1740     */ 1741    public static final int MODIFIER_MASK; 1742     1743    /** 1744     * Keyboard and/or mouse event mask indicating that mouse button one 1745     * was pushed when the event was generated. (value is 1&lt;&lt;19). 1746     */ 1747    public static final int BUTTON1 = 1 << 19; 1748 1749    /** 1750     * Keyboard and/or mouse event mask indicating that mouse button two 1751     * was pushed when the event was generated. (value is 1&lt;&lt;20). 1752     */ 1753    public static final int BUTTON2 = 1 << 20; 1754 1755    /** 1756     * Keyboard and/or mouse event mask indicating that mouse button three 1757     * was pushed when the event was generated. (value is 1&lt;&lt;21). 1758     */ 1759    public static final int BUTTON3 = 1 << 21; 1760 1761    /** 1762     * Keyboard and/or mouse event mask indicating that mouse button four 1763     * was pushed when the event was generated. (value is 1&lt;&lt;23). 1764     * 1765     * @since 3.1 1766     */ 1767    public static final int BUTTON4 = 1 << 23; 1768 1769    /** 1770     * Keyboard and/or mouse event mask indicating that mouse button five 1771     * was pushed when the event was generated. (value is 1&lt;&lt;25). 1772     * 1773     * @since 3.1 1774     */ 1775    public static final int BUTTON5 = 1 << 25; 1776 1777    /** 1778     * Keyboard and/or mouse event mask indicating all possible 1779     * mouse buttons. 1780     * 1781     * To allow for the future, this mask is intended to be used 1782     * in place of code that references each individual button mask. 1783     * For example, the following expression will determine whether 1784     * any button is pressed and will continue to work as new button 1785     * masks are added. 1786     * 1787     * <code>(stateMask & SWT.BUTTON_MASK) != 0</code>. 1788     * 1789     * @since 2.1 1790     */ 1791    public static final int BUTTON_MASK; 1792     1793    /** 1794     * Keyboard and/or mouse event mask indicating that the MOD1 key 1795     * was pushed on the keyboard when the event was generated. 1796     * 1797     * This is the primary keyboard modifier for the platform. 1798     * 1799     * @since 2.1 1800     */ 1801    public static final int MOD1; 1802     1803    /** 1804     * Keyboard and/or mouse event mask indicating that the MOD2 key 1805     * was pushed on the keyboard when the event was generated. 1806     * 1807     * This is the secondary keyboard modifier for the platform. 1808     * 1809     * @since 2.1 1810     */ 1811    public static final int MOD2; 1812 1813    /** 1814     * Keyboard and/or mouse event mask indicating that the MOD3 key 1815     * was pushed on the keyboard when the event was generated. 1816     * 1817     * @since 2.1 1818     */ 1819    public static final int MOD3; 1820 1821    /** 1822     * Keyboard and/or mouse event mask indicating that the MOD4 key 1823     * was pushed on the keyboard when the event was generated. 1824     * 1825     * @since 2.1 1826     */ 1827    public static final int MOD4; 1828     1829    /** 1830     * Constants to indicate line scrolling (value is 1). 1831     * <p><b>Used By:</b><ul> 1832     * <li><code>Control</code></li> 1833     * </ul></p> 1834     * 1835     * @since 3.1 1836     */ 1837    public static final int SCROLL_LINE = 1; 1838 1839    /** 1840     * Constants to indicate page scrolling (value is 2). 1841     * <p><b>Used By:</b><ul> 1842     * <li><code>Control</code></li> 1843     * </ul></p> 1844     * 1845     * @since 3.1 1846     */ 1847    public static final int SCROLL_PAGE = 2; 1848     1849    /** 1850     * Accelerator constant used to differentiate a key code from a 1851     * unicode character. 1852     * 1853     * If this bit is set, then the key stroke 1854     * portion of an accelerator represents a key code. If this bit 1855     * is not set, then the key stroke portion of an accelerator is 1856     * a unicode character. 1857     * 1858     * The following expression is false: 1859     * 1860     * <code>((SWT.MOD1 | SWT.MOD2 | 'T') & SWT.KEYCODE_BIT) != 0</code>. 1861     * 1862     * The following expression is true: 1863     * 1864     * <code>((SWT.MOD3 | SWT.F2) & SWT.KEYCODE_BIT) != 0</code>. 1865     * 1866     * (value is (1&lt;&lt;24)) 1867     * 1868     * @since 2.1 1869     */ 1870    public static final int KEYCODE_BIT = (1 << 24); 1871 1872    /** 1873     * Accelerator constant used to extract the key stroke portion of 1874     * an accelerator. 1875     * 1876     * The key stroke may be a key code or a unicode 1877     * value. If the key stroke is a key code <code>KEYCODE_BIT</code> 1878     * will be set. 1879     * 1880     * @since 2.1 1881     */ 1882    public static final int KEY_MASK = KEYCODE_BIT + 0xFFFF; 1883     1884    /** 1885     * Keyboard event constant representing the UP ARROW key 1886     * (value is (1&lt;&lt;24)+1). 1887     */ 1888    public static final int ARROW_UP = KEYCODE_BIT + 1; 1889 1890    /** 1891     * Keyboard event constant representing the DOWN ARROW key 1892     * (value is (1&lt;&lt;24)+2). 1893     */ 1894    public static final int ARROW_DOWN = KEYCODE_BIT + 2; 1895 1896    /** 1897     * Keyboard event constant representing the LEFT ARROW key 1898     * (value is (1&lt;&lt;24)+3). 1899     */ 1900    public static final int ARROW_LEFT = KEYCODE_BIT + 3; 1901 1902    /** 1903     * Keyboard event constant representing the RIGHT ARROW key 1904     * (value is (1&lt;&lt;24)+4). 1905     */ 1906    public static final int ARROW_RIGHT = KEYCODE_BIT + 4; 1907 1908    /** 1909     * Keyboard event constant representing the PAGE UP key 1910     * (value is (1&lt;&lt;24)+5). 1911     */ 1912    public static final int PAGE_UP = KEYCODE_BIT + 5; 1913 1914    /** 1915     * Keyboard event constant representing the PAGE DOWN key 1916     * (value is (1&lt;&lt;24)+6). 1917     */ 1918    public static final int PAGE_DOWN = KEYCODE_BIT + 6; 1919 1920    /** 1921     * Keyboard event constant representing the HOME key 1922     * (value is (1&lt;&lt;24)+7). 1923     */ 1924    public static final int HOME = KEYCODE_BIT + 7; 1925 1926    /** 1927     * Keyboard event constant representing the END key 1928     * (value is (1&lt;&lt;24)+8). 1929     */ 1930    public static final int END = KEYCODE_BIT + 8; 1931 1932    /** 1933     * Keyboard event constant representing the INSERT key 1934     * (value is (1&lt;&lt;24)+9). 1935     */ 1936    public static final int INSERT = KEYCODE_BIT + 9; 1937 1938    /** 1939     * Keyboard event constant representing the F1 key 1940     * (value is (1&lt;&lt;24)+10). 1941     */ 1942    public static final int F1 = KEYCODE_BIT + 10; 1943     1944    /** 1945     * Keyboard event constant representing the F2 key 1946     * (value is (1&lt;&lt;24)+11). 1947     */ 1948    public static final int F2 = KEYCODE_BIT + 11; 1949     1950    /** 1951     * Keyboard event constant representing the F3 key 1952     * (value is (1&lt;&lt;24)+12). 1953     */ 1954    public static final int F3 = KEYCODE_BIT + 12; 1955     1956    /** 1957     * Keyboard event constant representing the F4 key 1958     * (value is (1&lt;&lt;24)+13). 1959     */ 1960    public static final int F4 = KEYCODE_BIT + 13; 1961     1962    /** 1963     * Keyboard event constant representing the F5 key 1964     * (value is (1&lt;&lt;24)+14). 1965     */ 1966    public static final int F5 = KEYCODE_BIT + 14; 1967     1968    /** 1969     * Keyboard event constant representing the F6 key 1970     * (value is (1&lt;&lt;24)+15). 1971     */ 1972    public static final int F6 = KEYCODE_BIT + 15; 1973     1974    /** 1975     * Keyboard event constant representing the F7 key 1976     * (value is (1&lt;&lt;24)+16). 1977     */ 1978    public static final int F7 = KEYCODE_BIT + 16; 1979     1980    /** 1981     * Keyboard event constant representing the F8 key 1982     * (value is (1&lt;&lt;24)+17). 1983     */ 1984    public static final int F8 = KEYCODE_BIT + 17; 1985     1986    /** 1987     * Keyboard event constant representing the F9 key 1988     * (value is (1&lt;&lt;24)+18). 1989     */ 1990    public static final int F9 = KEYCODE_BIT + 18; 1991     1992    /** 1993     * Keyboard event constant representing the F10 key 1994     * (value is (1&lt;&lt;24)+19). 1995     */ 1996    public static final int F10 = KEYCODE_BIT + 19; 1997     1998    /** 1999     * Keyboard event constant representing the F11 key 2000     * (value is (1&lt;&lt;24)+20). 2001     */ 2002    public static final int F11 = KEYCODE_BIT + 20; 2003     2004    /** 2005     * Keyboard event constant representing the F12 key 2006     * (value is (1&lt;&lt;24)+21). 2007     */ 2008    public static final int F12 = KEYCODE_BIT + 21; 2009 2010    /** 2011     * Keyboard event constant representing the F13 key 2012     * (value is (1&lt;&lt;24)+22). 2013     * 2014     * @since 3.0 2015     */ 2016    public static final int F13 = KEYCODE_BIT + 22; 2017     2018    /** 2019     * Keyboard event constant representing the F14 key 2020     * (value is (1&lt;&lt;24)+23). 2021     * 2022     * @since 3.0 2023     */ 2024    public static final int F14 = KEYCODE_BIT + 23; 2025     2026    /** 2027     * Keyboard event constant representing the F15 key 2028     * (value is (1&lt;&lt;24)+24). 2029     * 2030     * @since 3.0 2031     */ 2032    public static final int F15 = KEYCODE_BIT + 24; 2033     2034    /** 2035     * Keyboard event constant representing the numeric key 2036     * pad multiply key (value is (1&lt;&lt;24)+42). 2037     * 2038     * @since 3.0 2039     */ 2040    public static final int KEYPAD_MULTIPLY = KEYCODE_BIT + 42; 2041     2042    /** 2043     * Keyboard event constant representing the numeric key 2044     * pad add key (value is (1&lt;&lt;24)+43). 2045     * 2046     * @since 3.0 2047     */ 2048    public static final int KEYPAD_ADD = KEYCODE_BIT + 43; 2049     2050    /** 2051     * Keyboard event constant representing the numeric key 2052     * pad subtract key (value is (1&lt;&lt;24)+45). 2053     * 2054     * @since 3.0 2055     */ 2056    public static final int KEYPAD_SUBTRACT = KEYCODE_BIT + 45; 2057 2058    /** 2059     * Keyboard event constant representing the numeric key 2060     * pad decimal key (value is (1&lt;&lt;24)+46). 2061     * 2062     * @since 3.0 2063     */ 2064    public static final int KEYPAD_DECIMAL = KEYCODE_BIT + 46; 2065 2066    /** 2067     * Keyboard event constant representing the numeric key 2068     * pad divide key (value is (1&lt;&lt;24)+47). 2069     * 2070     * @since 3.0 2071     */ 2072    public static final int KEYPAD_DIVIDE = KEYCODE_BIT + 47; 2073 2074    /** 2075     * Keyboard event constant representing the numeric key 2076     * pad zero key (value is (1&lt;&lt;24)+48). 2077     * 2078     * @since 3.0 2079     */ 2080    public static final int KEYPAD_0 = KEYCODE_BIT + 48; 2081 2082    /** 2083     * Keyboard event constant representing the numeric key 2084     * pad one key (value is (1&lt;&lt;24)+49). 2085     * 2086     * @since 3.0 2087     */ 2088    public static final int KEYPAD_1 = KEYCODE_BIT + 49; 2089 2090    /** 2091     * Keyboard event constant representing the numeric key 2092     * pad two key (value is (1&lt;&lt;24)+50). 2093     * 2094     * @since 3.0 2095     */ 2096    public static final int KEYPAD_2 = KEYCODE_BIT + 50; 2097 2098    /** 2099     * Keyboard event constant representing the numeric key 2100     * pad three key (value is (1&lt;&lt;24)+51). 2101     * 2102     * @since 3.0 2103     */ 2104    public static final int KEYPAD_3 = KEYCODE_BIT + 51; 2105 2106    /** 2107     * Keyboard event constant representing the numeric key 2108     * pad four key (value is (1&lt;&lt;24)+52). 2109     * 2110     * @since 3.0 2111     */ 2112    public static final int KEYPAD_4 = KEYCODE_BIT + 52; 2113     2114    /** 2115     * Keyboard event constant representing the numeric key 2116     * pad five key (value is (1&lt;&lt;24)+53). 2117     * 2118     * @since 3.0 2119     */ 2120    public static final int KEYPAD_5 = KEYCODE_BIT + 53; 2121     2122    /** 2123     * Keyboard event constant representing the numeric key 2124     * pad six key (value is (1&lt;&lt;24)+54). 2125     * 2126     * @since 3.0 2127     */ 2128    public static final int KEYPAD_6 = KEYCODE_BIT + 54; 2129 2130    /** 2131     * Keyboard event constant representing the numeric key 2132     * pad seven key (value is (1&lt;&lt;24)+55). 2133     * 2134     * @since 3.0 2135     */ 2136    public static final int KEYPAD_7 = KEYCODE_BIT + 55; 2137 2138    /** 2139     * Keyboard event constant representing the numeric key 2140     * pad eight key (value is (1&lt;&lt;24)+56). 2141     * 2142     * @since 3.0 2143     */ 2144    public static final int KEYPAD_8 = KEYCODE_BIT + 56; 2145     2146    /** 2147     * Keyboard event constant representing the numeric key 2148     * pad nine key (value is (1&lt;&lt;24)+57). 2149     * 2150     * @since 3.0 2151     */ 2152    public static final int KEYPAD_9 = KEYCODE_BIT + 57; 2153 2154    /** 2155     * Keyboard event constant representing the numeric key 2156     * pad equal key (value is (1&lt;&lt;24)+61). 2157     * 2158     * @since 3.0 2159     */ 2160    public static final int KEYPAD_EQUAL = KEYCODE_BIT + 61; 2161     2162    /** 2163     * Keyboard event constant representing the numeric key 2164     * pad enter key (value is (1&lt;&lt;24)+80). 2165     * 2166     * @since 3.0 2167     */ 2168    public static final int KEYPAD_CR = KEYCODE_BIT + 80; 2169     2170    /** 2171     * Keyboard event constant representing the help 2172     * key (value is (1&lt;&lt;24)+81). 2173     * 2174     * NOTE: The HELP key maps to the key labeled "help", 2175     * not "F1". If your keyboard does not have a HELP key, 2176     * you will never see this key press. To listen for 2177     * help on a control, use SWT.Help. 2178     * 2179     * @since 3.0 2180     * 2181     * @see SWT#Help 2182     */ 2183    public static final int HELP = KEYCODE_BIT + 81; 2184     2185    /** 2186     * Keyboard event constant representing the caps 2187     * lock key (value is (1&lt;&lt;24)+82). 2188     * 2189     * @since 3.0 2190     */ 2191    public static final int CAPS_LOCK = KEYCODE_BIT + 82; 2192     2193    /** 2194     * Keyboard event constant representing the num 2195     * lock key (value is (1&lt;&lt;24)+83). 2196     * 2197     * @since 3.0 2198     */ 2199    public static final int NUM_LOCK = KEYCODE_BIT + 83; 2200     2201    /** 2202     * Keyboard event constant representing the scroll 2203     * lock key (value is (1&lt;&lt;24)+84). 2204     * 2205     * @since 3.0 2206     */ 2207    public static final int SCROLL_LOCK = KEYCODE_BIT + 84; 2208     2209    /** 2210     * Keyboard event constant representing the pause 2211     * key (value is (1&lt;&lt;24)+85). 2212     * 2213     * @since 3.0 2214     */ 2215    public static final int PAUSE = KEYCODE_BIT + 85; 2216     2217    /** 2218     * Keyboard event constant representing the break 2219     * key (value is (1&lt;&lt;24)+86). 2220     * 2221     * @since 3.0 2222     */ 2223    public static final int BREAK = KEYCODE_BIT + 86; 2224     2225    /** 2226     * Keyboard event constant representing the print screen 2227     * key (value is (1&lt;&lt;24)+87). 2228     * 2229     * @since 3.0 2230     */ 2231    public static final int PRINT_SCREEN = KEYCODE_BIT + 87; 2232     2233    /** 2234     * The <code>MessageBox</code> style constant for error icon 2235     * behavior (value is 1). 2236     */ 2237    public static final int ICON_ERROR = 1; 2238 2239    /** 2240     * The <code>MessageBox</code> style constant for information icon 2241     * behavior (value is 1&lt;&lt;1). 2242     */ 2243    public static final int ICON_INFORMATION = 1 << 1; 2244 2245    /** 2246     * The <code>MessageBox</code> style constant for question icon 2247     * behavior (value is 1&lt;&lt;2). 2248     */ 2249    public static final int ICON_QUESTION = 1 << 2; 2250 2251    /** 2252     * The <code>MessageBox</code> style constant for warning icon 2253     * behavior (value is 1&lt;&lt;3). 2254     */ 2255    public static final int ICON_WARNING = 1 << 3; 2256 2257    /** 2258     * The <code>MessageBox</code> style constant for "working" icon 2259     * behavior (value is 1&lt;&lt;4). 2260     */ 2261    public static final int ICON_WORKING = 1 << 4; 2262 2263    /** 2264     * The <code>MessageBox</code> style constant for an OK button; 2265     * valid combinations are OK, OK|CANCEL 2266     * (value is 1&lt;&lt;5). 2267     */ 2268    public static final int OK = 1 << 5; 2269 2270    /** 2271     * The <code>MessageBox</code> style constant for YES button; 2272     * valid combinations are YES|NO, YES|NO|CANCEL 2273     * (value is 1&lt;&lt;6). 2274     */ 2275    public static final int YES = 1 << 6; 2276 2277    /** 2278     * The <code>MessageBox</code> style constant for NO button; 2279     * valid combinations are YES|NO, YES|NO|CANCEL 2280     * (value is 1&lt;&lt;7). 2281     */ 2282    public static final int NO = 1 << 7; 2283 2284    /** 2285     * The <code>MessageBox</code> style constant for a CANCEL button; 2286     * valid combinations are OK|CANCEL, YES|NO|CANCEL, RETRY|CANCEL 2287     * (value is 1&lt;&lt;8). This style constant is also used with 2288     * <code>Text</code> in combination with SEARCH. 2289     * 2290     * <p><b>Used By:</b><ul> 2291     * <li><code>MessageBox</code></li> 2292     * <li><code>Text</code></li> 2293     * </ul></p> 2294     */ 2295    public static final int CANCEL = 1 << 8; 2296 2297    /** 2298     * The <code>MessageBox</code> style constant for an ABORT button; 2299     * the only valid combination is ABORT|RETRY|IGNORE 2300     * (value is 1&lt;&lt;9). 2301     */ 2302    public static final int ABORT = 1 << 9; 2303 2304    /** 2305     * The <code>MessageBox</code> style constant for a RETRY button; 2306     * valid combinations are ABORT|RETRY|IGNORE, RETRY|CANCEL 2307     * (value is 1&lt;&lt;10). 2308     */ 2309    public static final int RETRY = 1 << 10; 2310 2311    /** 2312     * The <code>MessageBox</code> style constant for an IGNORE button; 2313     * the only valid combination is ABORT|RETRY|IGNORE 2314     * (value is 1&lt;&lt;11). 2315     */ 2316    public static final int IGNORE = 1 << 11; 2317 2318    /** 2319     * The <code>FileDialog</code> style constant for open file dialog behavior 2320     * (value is 1&lt;&lt;12). 2321     */ 2322    public static final int OPEN = 1 << 12; 2323 2324    /** 2325     * The <code>FileDialog</code> style constant for save file dialog behavior 2326     * (value is 1&lt;&lt;13). 2327     */ 2328    public static final int SAVE = 1 << 13; 2329 2330    /** 2331     * The <code>Composite</code> constant to indicate that 2332     * an attribute (such as background) is not inherited 2333     * by the children (value is 0). 2334     * 2335     * @since 3.2 2336     */ 2337    public static final int INHERIT_NONE = 0; 2338     2339    /** 2340     * The <code>Composite</code> constant to indicate that 2341     * an attribute (such as background) is inherited by 2342     * children who choose this value as their "default" 2343     * (value is 1). For example, a label child will 2344     * typically choose to inherit the background color 2345     * of a composite while a list or table will not. 2346     * 2347     * @since 3.2 2348     */ 2349    public static final int INHERIT_DEFAULT = 1; 2350     2351    /** 2352     * The <code>Composite</code> constant to indicate that 2353     * an attribute (such as background) is inherited by 2354     * all children. 2355     * 2356     * @since 3.2 2357     */ 2358    public static final int INHERIT_FORCE = 2; 2359     2360    /** 2361     * Default color white (value is 1). 2362     */ 2363    public static final int COLOR_WHITE = 1; 2364 2365    /** 2366     * Default color black (value is 2). 2367     */ 2368    public static final int COLOR_BLACK = 2; 2369 2370    /** 2371     * Default color red (value is 3). 2372     */ 2373    public static final int COLOR_RED = 3; 2374 2375    /** 2376     * Default color dark red (value is 4). 2377     */ 2378    public static final int COLOR_DARK_RED = 4; 2379 2380    /** 2381     * Default color green (value is 5). 2382     */ 2383    public static final int COLOR_GREEN = 5; 2384 2385    /** 2386     * Default color dark green (value is 6). 2387     */ 2388    public static final int COLOR_DARK_GREEN = 6; 2389 2390    /** 2391     * Default color yellow (value is 7). 2392     */ 2393    public static final int COLOR_YELLOW = 7; 2394 2395    /** 2396     * Default color dark yellow (value is 8). 2397     */ 2398    public static final int COLOR_DARK_YELLOW = 8; 2399 2400    /** 2401     * Default color blue (value is 9). 2402     */ 2403    public static final int COLOR_BLUE = 9; 2404 2405    /** 2406     * Default color dark blue (value is 10). 2407     */ 2408    public static final int COLOR_DARK_BLUE = 10; 2409 2410    /** 2411     * Default color magenta (value is 11). 2412     */ 2413    public static final int COLOR_MAGENTA = 11; 2414 2415    /** 2416     * Default color dark magenta (value is 12). 2417     */ 2418    public static final int COLOR_DARK_MAGENTA = 12; 2419 2420    /** 2421     * Default color cyan (value is 13). 2422     */ 2423    public static final int COLOR_CYAN = 13; 2424 2425    /** 2426     * Default color dark cyan (value is 14). 2427     */ 2428    public static final int COLOR_DARK_CYAN = 14; 2429 2430    /** 2431     * Default color gray (value is 15). 2432     */ 2433    public static final int COLOR_GRAY = 15; 2434 2435    /** 2436     * Default color dark gray (value is 16). 2437     */ 2438    public static final int COLOR_DARK_GRAY = 16; 2439     2440    /* 2441     * System Colors 2442     * 2443     * Dealing with system colors is an area where there are 2444     * many platform differences. On some platforms, system 2445     * colors can change dynamically while the program is 2446     * running. On other platforms, system colors can be 2447     * changed for all instances of a particular widget. 2448     * Therefore, the only truly portable method to obtain 2449     * a widget color query is to query the color from an 2450     * instance of the widget. 2451     * 2452     * It is expected that the list of supported colors 2453     * will grow over time. 2454     */ 2455     2456    /** 2457     * System color used to paint dark shadow areas (value is 17). 2458     */ 2459    public static final int COLOR_WIDGET_DARK_SHADOW = 17; 2460 2461    /** 2462     * System color used to paint normal shadow areas (value is 18). 2463     */ 2464    public static final int COLOR_WIDGET_NORMAL_SHADOW = 18; 2465 2466    /** 2467     * System color used to paint light shadow areas (value is 19). 2468     */ 2469    public static final int COLOR_WIDGET_LIGHT_SHADOW = 19; 2470 2471    /** 2472     * System color used to paint highlight shadow areas (value is 20). 2473     */ 2474    public static final int COLOR_WIDGET_HIGHLIGHT_SHADOW = 20; 2475 2476    /** 2477     * System color used to paint foreground areas (value is 21). 2478     */ 2479    public static final int COLOR_WIDGET_FOREGROUND = 21; 2480 2481    /** 2482     * System color used to paint background areas (value is 22). 2483     */ 2484    public static final int COLOR_WIDGET_BACKGROUND = 22; 2485 2486    /** 2487     * System color used to paint border areas (value is 23). 2488     */ 2489    public static final int COLOR_WIDGET_BORDER = 23; 2490 2491    /** 2492     * System color used to paint list foreground areas (value is 24). 2493     */ 2494    public static final int COLOR_LIST_FOREGROUND = 24; 2495 2496    /** 2497     * System color used to paint list background areas (value is 25). 2498     */ 2499    public static final int COLOR_LIST_BACKGROUND = 25; 2500 2501    /** 2502     * System color used to paint list selection background areas (value is 26). 2503     */ 2504    public static final int COLOR_LIST_SELECTION = 26; 2505 2506    /** 2507     * System color used to paint list selected text (value is 27). 2508     */ 2509    public static final int COLOR_LIST_SELECTION_TEXT = 27; 2510 2511    /** 2512     * System color used to paint tooltip text (value is 28). 2513     */ 2514    public static final int COLOR_INFO_FOREGROUND = 28; 2515 2516    /** 2517     * System color used to paint tooltip background areas (value is 29). 2518     */ 2519    public static final int COLOR_INFO_BACKGROUND = 29; 2520     2521    /** 2522     * System color used to paint title text (value is 30). 2523     */ 2524    public static final int COLOR_TITLE_FOREGROUND = 30; 2525 2526    /** 2527     * System color used to paint title background areas (value is 31). 2528     */ 2529    public static final int COLOR_TITLE_BACKGROUND = 31; 2530 2531    /** 2532     * System color used to paint title background gradient (value is 32). 2533     */ 2534    public static final int COLOR_TITLE_BACKGROUND_GRADIENT = 32; 2535     2536    /** 2537     * System color used to paint inactive title text (value is 33). 2538     */ 2539    public static final int COLOR_TITLE_INACTIVE_FOREGROUND = 33; 2540 2541    /** 2542     * System color used to paint inactive title background areas (value is 34). 2543     */ 2544    public static final int COLOR_TITLE_INACTIVE_BACKGROUND = 34; 2545 2546    /** 2547     * System color used to paint inactive title background gradient (value is 35). 2548     */ 2549    public static final int COLOR_TITLE_INACTIVE_BACKGROUND_GRADIENT = 35; 2550     2551    /** 2552     * Draw constant indicating whether the drawing operation 2553     * should fill the background (value is 1&lt;&lt;0). 2554     */ 2555    public static final int DRAW_TRANSPARENT = 1 << 0; 2556 2557    /** 2558     * Draw constant indicating whether the string drawing operation 2559     * should handle line-delimiters (value is 1&lt;&lt;1). 2560     */ 2561    public static final int DRAW_DELIMITER = 1 << 1; 2562 2563    /** 2564     * Draw constant indicating whether the string drawing operation 2565     * should expand TAB characters (value is 1&lt;&lt;2). 2566     */ 2567    public static final int DRAW_TAB = 1 << 2; 2568 2569    /** 2570     * Draw constant indicating whether the string drawing operation 2571     * should handle mnemonics (value is 1&lt;&lt;3). 2572     */ 2573    public static final int DRAW_MNEMONIC = 1 << 3; 2574 2575     2576    /** 2577     * Selection constant indicating that a line delimiter should be 2578     * drawn (value is 1&lt;&lt;17). 2579     * 2580     * <p><b>Used By:</b><ul> 2581     * <li><code>TextLayout</code></li> 2582     * </ul></p> 2583     * 2584     * @see #FULL_SELECTION 2585     * @see #LAST_LINE_SELECTION 2586     * 2587     * @since 3.3 2588     */ 2589    public static final int DELIMITER_SELECTION = 1 << 17; 2590     2591    /** 2592     * Selection constant indicating that the last line is selected 2593     * to the end and should be drawn using either a line delimiter 2594     * or full line selection (value is 1&lt;&lt;20). 2595     * 2596     * <p><b>Used By:</b><ul> 2597     * <li><code>TextLayout</code></li> 2598     * </ul></p> 2599     * 2600     * @see #DELIMITER_SELECTION 2601     * @see #FULL_SELECTION 2602     * 2603     * @since 3.3 2604     */ 2605    public static final int LAST_LINE_SELECTION = 1 << 20; 2606     2607    /** 2608     * SWT error constant indicating that no error number was specified 2609     * (value is 1). 2610     */ 2611    public static final int ERROR_UNSPECIFIED = 1; 2612     2613    /** 2614     * SWT error constant indicating that no more handles for an 2615     * operating system resource are available 2616     * (value is 2). 2617     */ 2618    public static final int ERROR_NO_HANDLES = 2; 2619     2620    /** 2621     * SWT error constant indicating that no more callback resources are available 2622     * (value is 3). 2623     */ 2624    public static final int ERROR_NO_MORE_CALLBACKS = 3; 2625     2626    /** 2627     * SWT error constant indicating that a null argument was passed in 2628     * (value is 4). 2629     */ 2630    public static final int ERROR_NULL_ARGUMENT = 4; 2631     2632    /** 2633     * SWT error constant indicating that an invalid argument was passed in 2634     * (value is 5). 2635     */ 2636    public static final int ERROR_INVALID_ARGUMENT = 5; 2637     2638    /** 2639     * SWT error constant indicating that a value was found to be 2640     * outside the allowable range 2641     * (value is 6). 2642     */ 2643    public static final int ERROR_INVALID_RANGE = 6; 2644     2645    /** 2646     * SWT error constant indicating that a value which can not be 2647     * zero was found to be 2648     * (value is 7). 2649     */ 2650    public static final int ERROR_CANNOT_BE_ZERO = 7; 2651     2652    /** 2653     * SWT error constant indicating that the underlying operating 2654     * system was unable to provide the value of an item 2655     * (value is 8). 2656     */ 2657    public static final int ERROR_CANNOT_GET_ITEM = 8; 2658     2659    /** 2660     * SWT error constant indicating that the underlying operating 2661     * system was unable to provide the selection 2662     * (value is 9). 2663     */ 2664    public static final int ERROR_CANNOT_GET_SELECTION = 9; 2665 2666    /** 2667     * SWT error constant indicating that the matrix is not invertible 2668     * (value is 10). 2669     * 2670     * @since 3.1 2671     */ 2672    public static final int ERROR_CANNOT_INVERT_MATRIX = 10; 2673 2674    /** 2675     * SWT error constant indicating that the underlying operating 2676     * system was unable to provide the height of an item 2677     * (value is 11). 2678     */ 2679    public static final int ERROR_CANNOT_GET_ITEM_HEIGHT = 11; 2680 2681    /** 2682     * SWT error constant indicating that the underlying operating 2683     * system was unable to provide the text of a widget 2684     * (value is 12). 2685     */ 2686    public static final int ERROR_CANNOT_GET_TEXT = 12; 2687 2688    /** 2689     * SWT error constant indicating that the underlying operating 2690     * system was unable to set the text of a widget 2691     * (value is 13). 2692     */ 2693    public static final int ERROR_CANNOT_SET_TEXT = 13; 2694 2695    /** 2696     * SWT error constant indicating that the underlying operating 2697     * system was unable to add an item 2698     * (value is 14). 2699     */ 2700    public static final int ERROR_ITEM_NOT_ADDED = 14; 2701 2702    /** 2703     * SWT error constant indicating that the underlying operating 2704     * system was unable to remove an item 2705     * (value is 15). 2706     */ 2707    public static final int ERROR_ITEM_NOT_REMOVED = 15; 2708 2709    /** 2710     * SWT error constant indicating that the graphics library 2711     * is not available 2712     * (value is 16). 2713     */ 2714    public static final int ERROR_NO_GRAPHICS_LIBRARY = 16; 2715 2716    /** 2717     * SWT error constant indicating that a particular feature has 2718     * not been implemented on this platform 2719     * (value is 20). 2720     */ 2721    public static final int ERROR_NOT_IMPLEMENTED = 20; 2722 2723    /** 2724     * SWT error constant indicating that a menu which needed 2725     * to have the drop down style had some other style instead 2726     * (value is 21). 2727     */ 2728    public static final int ERROR_MENU_NOT_DROP_DOWN = 21; 2729 2730    /** 2731     * SWT error constant indicating that an attempt was made to 2732     * invoke an SWT operation which can only be executed by the 2733     * user-interface thread from some other thread 2734     * (value is 22). 2735     */ 2736    public static final int ERROR_THREAD_INVALID_ACCESS = 22; 2737 2738    /** 2739     * SWT error constant indicating that an attempt was made to 2740     * invoke an SWT operation using a widget which had already 2741     * been disposed 2742     * (value is 24). 2743     */ 2744    public static final int ERROR_WIDGET_DISPOSED = 24; 2745 2746    /** 2747     * SWT error constant indicating that a menu item which needed 2748     * to have the cascade style had some other style instead 2749     * (value is 27). 2750     */ 2751    public static final int ERROR_MENUITEM_NOT_CASCADE = 27; 2752 2753    /** 2754     * SWT error constant indicating that the underlying operating 2755     * system was unable to set the selection of a widget 2756     * (value is 28). 2757     */ 2758    public static final int ERROR_CANNOT_SET_SELECTION = 28; 2759 2760    /** 2761     * SWT error constant indicating that the underlying operating 2762     * system was unable to set the menu 2763     * (value is 29). 2764     */ 2765    public static final int ERROR_CANNOT_SET_MENU = 29; 2766 2767    /** 2768     * SWT error constant indicating that the underlying operating 2769     * system was unable to set the enabled state 2770     * (value is 30). 2771     */ 2772    public static final int ERROR_CANNOT_SET_ENABLED = 30; 2773 2774    /** 2775     * SWT error constant indicating that the underlying operating 2776     * system was unable to provide enabled/disabled state information 2777     * (value is 31). 2778     */ 2779    public static final int ERROR_CANNOT_GET_ENABLED = 31; 2780 2781    /** 2782     * SWT error constant indicating that a provided widget can 2783     * not be used as a parent in the current operation 2784     * (value is 32). 2785     */ 2786    public static final int ERROR_INVALID_PARENT = 32; 2787     2788    /** 2789     * SWT error constant indicating that a menu which needed 2790     * to have the menu bar style had some other style instead 2791     * (value is 33). 2792     */ 2793    public static final int ERROR_MENU_NOT_BAR = 33; 2794 2795    /** 2796     * SWT error constant indicating that the underlying operating 2797     * system was unable to provide count information 2798     * (value is 36). 2799     */ 2800    public static final int ERROR_CANNOT_GET_COUNT = 36; 2801 2802    /** 2803     * SWT error constant indicating that a menu which needed 2804     * to have the pop up menu style had some other style instead 2805     * (value is 37). 2806     */ 2807    public static final int ERROR_MENU_NOT_POP_UP = 37; 2808 2809    /** 2810     * SWT error constant indicating that a graphics operation 2811     * was attempted with an image of an unsupported depth 2812     * (value is 38). 2813     */ 2814    public static final int ERROR_UNSUPPORTED_DEPTH = 38; 2815 2816    /** 2817     * SWT error constant indicating that an input/output operation 2818     * failed during the execution of an SWT operation 2819     * (value is 39). 2820     */ 2821    public static final int ERROR_IO = 39; 2822 2823    /** 2824     * SWT error constant indicating that a graphics operation 2825     * was attempted with an image having an invalid format 2826     * (value is 40). 2827     */ 2828    public static final int ERROR_INVALID_IMAGE = 40; 2829 2830    /** 2831     * SWT error constant indicating that a graphics operation 2832     * was attempted with an image having a valid but unsupported 2833     * format 2834     * (value is 42). 2835     */ 2836    public static final int ERROR_UNSUPPORTED_FORMAT = 42; 2837 2838    /** 2839     * SWT error constant indicating that an attempt was made 2840     * to subclass an SWT widget class without implementing the 2841     * <code>checkSubclass()</code> method 2842     * (value is 43). 2843     * 2844     * For additional information see the comment in 2845     * <code>Widget.checkSubclass()</code>. 2846     * 2847     * @see org.eclipse.swt.widgets.Widget#checkSubclass 2848     */ 2849    public static final int ERROR_INVALID_SUBCLASS = 43; 2850 2851    /** 2852     * SWT error constant indicating that an attempt was made to 2853     * invoke an SWT operation using a graphics object which had 2854     * already been disposed 2855     * (value is 44). 2856     */ 2857    public static final int ERROR_GRAPHIC_DISPOSED = 44; 2858     2859    /** 2860     * SWT error constant indicating that an attempt was made to 2861     * invoke an SWT operation using a device which had already 2862     * been disposed 2863     * (value is 45). 2864     */ 2865    public static final int ERROR_DEVICE_DISPOSED = 45; 2866     2867    /** 2868     * SWT error constant indicating that an exception happened 2869     * when executing a runnable 2870     * (value is 46). 2871     */ 2872    public static final int ERROR_FAILED_EXEC = 46; 2873     2874    /** 2875     * SWT error constant indicating that an unsatisfied link 2876     * error occurred while attempting to load a library 2877     * (value is 47). 2878     * 2879     * @since 3.1 2880     */ 2881    public static final int ERROR_FAILED_LOAD_LIBRARY = 47; 2882 2883    /** 2884     * SWT error constant indicating that a font is not valid 2885     * (value is 48). 2886     * 2887     * @since 3.1 2888     */ 2889    public static final int ERROR_INVALID_FONT = 48; 2890 2891    /** 2892     * Constant indicating that an image or operation is of type bitmap (value is 0). 2893     */ 2894    public static final int BITMAP = 0; 2895 2896    /** 2897     * Constant indicating that an image or operation is of type icon (value is 1). 2898     */ 2899    public static final int ICON = 1; 2900 2901    /** 2902     * The <code>Image</code> constructor argument indicating that 2903     * the new image should be a copy of the image provided as 2904     * an argument (value is 0). 2905     */ 2906    public static final int IMAGE_COPY = 0; 2907 2908    /** 2909     * The <code>Image</code> constructor argument indicating that 2910     * the new image should have the appearance of a "disabled" 2911     * (using the platform's rules for how this should look) 2912     * copy of the image provided as an argument (value is 1). 2913     */ 2914    public static final int IMAGE_DISABLE = 1; 2915     2916    /** 2917     * The <code>Image</code> constructor argument indicating that 2918     * the new image should have the appearance of a "gray scaled" 2919     * copy of the image provided as an argument (value is 2). 2920     */ 2921    public static final int IMAGE_GRAY = 2; 2922     2923    /** 2924     * The font style constant indicating a normal weight, non-italic font 2925     * (value is 0). 2926     */ 2927    public static final int NORMAL = 0; 2928     2929    /** 2930     * The font style constant indicating a bold weight font 2931     * (value is 1&lt;&lt;0). 2932     */ 2933    public static final int BOLD = 1 << 0; 2934     2935    /** 2936     * The font style constant indicating an italic font 2937     * (value is 1&lt;&lt;1). 2938     */ 2939    public static final int ITALIC = 1 << 1; 2940         2941    /** 2942     * System arrow cursor (value is 0). 2943     */ 2944    public static final int CURSOR_ARROW = 0; 2945         2946    /** 2947     * System wait cursor (value is 1). 2948     */ 2949    public static final int CURSOR_WAIT = 1; 2950         2951    /** 2952     * System cross hair cursor (value is 2). 2953     */ 2954    public static final int CURSOR_CROSS = 2; 2955         2956    /** 2957     * System app startup cursor (value is 3). 2958     */ 2959    public static final int CURSOR_APPSTARTING = 3; 2960         2961    /** 2962     * System help cursor (value is 4). 2963     */ 2964    public static final int CURSOR_HELP = 4; 2965         2966    /** 2967     * System resize all directions cursor (value is 5). 2968     */ 2969    public static final int CURSOR_SIZEALL = 5; 2970         2971    /** 2972     * System resize north-east-south-west cursor (value is 6). 2973     */ 2974    public static final int CURSOR_SIZENESW = 6; 2975         2976    /** 2977     * System resize north-south cursor (value is 7). 2978     */ 2979    public static final int CURSOR_SIZENS = 7; 2980         2981    /** 2982     * System resize north-west-south-east cursor (value is 8). 2983     */ 2984    public static final int CURSOR_SIZENWSE = 8; 2985         2986    /** 2987     * System resize west-east cursor (value is 9). 2988     */ 2989    public static final int CURSOR_SIZEWE = 9; 2990         2991    /** 2992     * System resize north cursor (value is 10). 2993     */ 2994    public static final int CURSOR_SIZEN = 10; 2995         2996    /** 2997     * System resize south cursor (value is 11). 2998     */ 2999    public static final int CURSOR_SIZES = 11; 3000         3001    /** 3002     * System resize east cursor (value is 12). 3003     */ 3004    public static final int CURSOR_SIZEE = 12; 3005         3006    /** 3007     * System resize west cursor (value is 13). 3008     */ 3009    public static final int CURSOR_SIZEW = 13; 3010         3011    /** 3012     * System resize north-east cursor (value is 14). 3013     */ 3014    public static final int CURSOR_SIZENE = 14; 3015         3016    /** 3017     * System resize south-east cursor (value is 15). 3018     */ 3019    public static final int CURSOR_SIZESE = 15; 3020         3021    /** 3022     * System resize south-west cursor (value is 16). 3023     */ 3024    public static final int CURSOR_SIZESW = 16; 3025         3026    /** 3027     * System resize north-west cursor (value is 17). 3028     */ 3029    public static final int CURSOR_SIZENW = 17; 3030         3031    /** 3032     * System up arrow cursor (value is 18). 3033     */ 3034    public static final int CURSOR_UPARROW = 18; 3035         3036    /** 3037     * System i-beam cursor (value is 19). 3038     */ 3039    public static final int CURSOR_IBEAM = 19; 3040         3041    /** 3042     * System "not allowed" cursor (value is 20). 3043     */ 3044    public static final int CURSOR_NO = 20; 3045         3046    /** 3047     * System hand cursor (value is 21). 3048     */ 3049    public static final int CURSOR_HAND = 21; 3050         3051    /** 3052     * Line drawing style for flat end caps (value is 1). 3053     * 3054     * @see org.eclipse.swt.graphics.GC#setLineCap(int) 3055     * @see org.eclipse.swt.graphics.GC#getLineCap() 3056     * 3057     * @since 3.1 3058     */ 3059    public static final int CAP_FLAT = 1; 3060 3061    /** 3062     * Line drawing style for rounded end caps (value is 2). 3063     * 3064     * @see org.eclipse.swt.graphics.GC#setLineCap(int) 3065     * @see org.eclipse.swt.graphics.GC#getLineCap() 3066     * 3067     * @since 3.1 3068     */ 3069    public static final int CAP_ROUND = 2; 3070 3071    /** 3072     * Line drawing style for square end caps (value is 3). 3073     * 3074     * @see org.eclipse.swt.graphics.GC#setLineCap(int) 3075     * @see org.eclipse.swt.graphics.GC#getLineCap() 3076     * 3077     * @since 3.1 3078     */ 3079    public static final int CAP_SQUARE = 3; 3080 3081    /** 3082     * Line drawing style for miter joins (value is 1). 3083     * 3084     * @see org.eclipse.swt.graphics.GC#setLineJoin(int) 3085     * @see org.eclipse.swt.graphics.GC#getLineJoin() 3086     * 3087     * @since 3.1 3088     */ 3089    public static final int JOIN_MITER = 1; 3090 3091    /** 3092     * Line drawing style for rounded joins (value is 2). 3093     * 3094     * @see org.eclipse.swt.graphics.GC#setLineJoin(int) 3095     * @see org.eclipse.swt.graphics.GC#getLineJoin() 3096     * 3097     * @since 3.1 3098     */ 3099    public static final int JOIN_ROUND = 2; 3100 3101    /** 3102     * Line drawing style for bevel joins (value is 3). 3103     * 3104     * @see org.eclipse.swt.graphics.GC#setLineJoin(int) 3105     * @see org.eclipse.swt.graphics.GC#getLineJoin() 3106     * 3107     * @since 3.1 3108     */ 3109    public static final int JOIN_BEVEL = 3; 3110 3111    /** 3112     * Line drawing style for solid lines (value is 1). 3113     */ 3114    public static final int LINE_SOLID = 1; 3115         3116    /** 3117     * Line drawing style for dashed lines (value is 2). 3118     */ 3119    public static final int LINE_DASH = 2; 3120         3121    /** 3122     * Line drawing style for dotted lines (value is 3). 3123     */ 3124    public static final int LINE_DOT = 3; 3125         3126    /** 3127     * Line drawing style for alternating dash-dot lines (value is 4). 3128     */ 3129    public static final int LINE_DASHDOT = 4; 3130         3131    /** 3132     * Line drawing style for dash-dot-dot lines (value is 5). 3133     */ 3134    public static final int LINE_DASHDOTDOT = 5; 3135 3136    /** 3137     * Line drawing style for custom dashed lines (value is 6). 3138     * 3139     * @see org.eclipse.swt.graphics.GC#setLineDash(int[]) 3140     * @see org.eclipse.swt.graphics.GC#getLineDash() 3141     * 3142     * @since 3.1 3143     */ 3144    public static final int LINE_CUSTOM = 6; 3145     3146    /** 3147     * Path constant that represents a "move to" operation (value is 1). 3148     * 3149     * @since 3.1 3150     */ 3151    public static final int PATH_MOVE_TO = 1; 3152 3153    /** 3154     * Path constant that represents a "line to" operation (value is 2). 3155     * 3156     * @since 3.1 3157     */ 3158    public static final int PATH_LINE_TO = 2; 3159 3160    /** 3161     * Path constant that represents a "quadratic curve to" operation (value is 3). 3162     * 3163     * @since 3.1 3164     */ 3165    public static final int PATH_QUAD_TO = 3; 3166 3167    /** 3168     * Path constant that represents a "cubic curve to" operation (value is 4). 3169     * 3170     * @since 3.1 3171     */ 3172    public static final int PATH_CUBIC_TO = 4; 3173 3174    /** 3175     * Path constant that represents a "close" operation (value is 5). 3176     * 3177     * @since 3.1 3178     */ 3179    public static final int PATH_CLOSE = 5; 3180 3181    /** 3182     * Even odd rule for filling operations (value is 1). 3183     * 3184     * @since 3.1 3185     */ 3186    public static final int FILL_EVEN_ODD = 1; 3187 3188    /** 3189     * Winding rule for filling operations (value is 2). 3190     * 3191     * @since 3.1 3192     */ 3193    public static final int FILL_WINDING = 2; 3194 3195    /** 3196     * Image format constant indicating an unknown image type (value is -1). 3197     */ 3198    public static final int IMAGE_UNDEFINED = -1; 3199 3200    /** 3201     * Image format constant indicating a Windows BMP format image (value is 0). 3202     */ 3203    public static final int IMAGE_BMP = 0; 3204 3205    /** 3206     * Image format constant indicating a run-length encoded 3207     * Windows BMP format image (value is 1). 3208     */ 3209    public static final int IMAGE_BMP_RLE = 1; 3210 3211    /** 3212     * Image format constant indicating a GIF format image (value is 2). 3213     */ 3214    public static final int IMAGE_GIF = 2; 3215 3216    /** 3217     * Image format constant indicating a ICO format image (value is 3). 3218     */ 3219    public static final int IMAGE_ICO = 3; 3220 3221    /** 3222     * Image format constant indicating a JPEG format image (value is 4). 3223     */ 3224    public static final int IMAGE_JPEG = 4; 3225 3226    /** 3227     * Image format constant indicating a PNG format image (value is 5). 3228     */ 3229    public static final int IMAGE_PNG = 5; 3230 3231    /** 3232     * Image format constant indicating a TIFF format image (value is 6). 3233     */ 3234    public static final int IMAGE_TIFF = 6; 3235 3236    /** 3237     * Image format constant indicating an OS/2 BMP format image (value is 7). 3238     */ 3239    public static final int IMAGE_OS2_BMP = 7; 3240 3241    /** 3242     * GIF image disposal method constants indicating that the 3243     * disposal method is unspecified (value is 0). 3244     */ 3245    public static final int DM_UNSPECIFIED = 0x0; 3246 3247    /** 3248     * GIF image disposal method constants indicating that the 3249     * disposal method is to do nothing; that is, to leave the 3250     * previous image in place (value is 1). 3251     */ 3252    public static final int DM_FILL_NONE = 0x1; 3253 3254    /** 3255     * GIF image disposal method constants indicating that the 3256     * the previous images should be covered with the background 3257     * color before displaying the next image (value is 2). 3258     */ 3259    public static final int DM_FILL_BACKGROUND = 0x2; 3260 3261    /** 3262     * GIF image disposal method constants indicating that the 3263     * disposal method is to restore the previous picture 3264     * (value is 3). 3265     */ 3266    public static final int DM_FILL_PREVIOUS = 0x3; 3267     3268    /** 3269     * Image transparency constant indicating that the image 3270     * contains no transparency information (value is 0). 3271     */ 3272    public static final int TRANSPARENCY_NONE = 0x0; 3273     3274    /** 3275     * Image transparency constant indicating that the image 3276     * contains alpha transparency information (value is 1&lt;&lt;0). 3277     */ 3278    public static final int TRANSPARENCY_ALPHA = 1 << 0; 3279     3280    /** 3281     * Image transparency constant indicating that the image 3282     * contains a transparency mask (value is 1&lt;&lt;1). 3283     */ 3284    public static final int TRANSPARENCY_MASK = 1 << 1; 3285     3286    /** 3287     * Image transparency constant indicating that the image 3288     * contains a transparent pixel (value is 1&lt;&lt;2). 3289     */ 3290    public static final int TRANSPARENCY_PIXEL = 1 << 2; 3291 3292    /** 3293     * The character movement type (value is 1&lt;&lt;0). 3294     * This constant is used to move a text offset over a character. 3295     * 3296     * @see org.eclipse.swt.graphics.TextLayout#getNextOffset(int, int) 3297     * @see org.eclipse.swt.graphics.TextLayout#getPreviousOffset(int, int) 3298     * 3299     * @since 3.0 3300     */ 3301    public static final int MOVEMENT_CHAR = 1 << 0; 3302 3303    /** 3304     * The cluster movement type (value is 1&lt;&lt;1). 3305     * This constant is used to move a text offset over a cluster. 3306     * A cluster groups one or more characters. A cluster is 3307     * undivisible, this means that a caret offset can not be placed in the 3308     * middle of a cluster. 3309     * 3310     * @see org.eclipse.swt.graphics.TextLayout#getNextOffset(int, int) 3311     * @see org.eclipse.swt.graphics.TextLayout#getPreviousOffset(int, int) 3312     * 3313     * @since 3.0 3314     */ 3315    public static final int MOVEMENT_CLUSTER = 1 << 1; 3316 3317    /** 3318     * The word movement type (value is 1&lt;&lt;2). 3319     * This constant is used to move a text offset over a word. 3320     * The behavior of this constant depends on the platform and on the 3321     * direction of the movement. For example, on Windows the stop is 3322     * always at the start of the word. On GTK and Mac the stop is at the end 3323     * of the word if the direction is next and at the start of the word if the 3324     * direction is previous. 3325     * 3326     * @see org.eclipse.swt.graphics.TextLayout#getNextOffset(int, int) 3327     * @see org.eclipse.swt.graphics.TextLayout#getPreviousOffset(int, int) 3328     * 3329     * @since 3.0 3330     */ 3331    public static final int MOVEMENT_WORD = 1 << 2; 3332 3333    /** 3334     * The word end movement type (value is 1&lt;&lt;3). 3335     * This constant is used to move a text offset to the next or previous 3336     * word end. The behavior of this constant does not depend on the platform. 3337     * 3338     * 3339     * @see org.eclipse.swt.graphics.TextLayout#getNextOffset(int, int) 3340     * @see org.eclipse.swt.graphics.TextLayout#getPreviousOffset(int, int) 3341     * 3342     * @since 3.3 3343     */ 3344    public static final int MOVEMENT_WORD_END = 1 << 3; 3345 3346    /** 3347     * The word start movement type (value is 1&lt;&lt;4). 3348     * This constant is used to move a text offset to the next or previous 3349     * word start. The behavior of this constant does not depend on the platform. 3350     * 3351     * @see org.eclipse.swt.graphics.TextLayout#getNextOffset(int, int) 3352     * @see org.eclipse.swt.graphics.TextLayout#getPreviousOffset(int, int) 3353     * 3354     * @since 3.3 3355     */ 3356    public static final int MOVEMENT_WORD_START = 1 << 4; 3357 3358     3359/** 3360 * Answers a concise, human readable description of the error code. 3361 * 3362 * @param code the SWT error code. 3363 * @return a description of the error code. 3364 * 3365 * @see SWT 3366 */ 3367static String findErrorText (int code) { 3368    switch (code) { 3369        case ERROR_UNSPECIFIED: return "Unspecified error"; //$NON-NLS-1$ 3370 case ERROR_NO_HANDLES: return "No more handles"; //$NON-NLS-1$ 3371 case ERROR_NO_MORE_CALLBACKS: return "No more callbacks"; //$NON-NLS-1$ 3372 case ERROR_NULL_ARGUMENT: return "Argument cannot be null"; //$NON-NLS-1$ 3373 case ERROR_INVALID_ARGUMENT: return "Argument not valid"; //$NON-NLS-1$ 3374 case ERROR_INVALID_RANGE: return "Index out of bounds"; //$NON-NLS-1$ 3375 case ERROR_CANNOT_BE_ZERO: return "Argument cannot be zero"; //$NON-NLS-1$ 3376 case ERROR_CANNOT_GET_ITEM: return "Cannot get item"; //$NON-NLS-1$ 3377 case ERROR_CANNOT_GET_SELECTION: return "Cannot get selection"; //$NON-NLS-1$ 3378 case ERROR_CANNOT_GET_ITEM_HEIGHT: return "Cannot get item height"; //$NON-NLS-1$ 3379 case ERROR_CANNOT_GET_TEXT: return "Cannot get text"; //$NON-NLS-1$ 3380 case ERROR_CANNOT_SET_TEXT: return "Cannot set text"; //$NON-NLS-1$ 3381 case ERROR_ITEM_NOT_ADDED: return "Item not added"; //$NON-NLS-1$ 3382 case ERROR_ITEM_NOT_REMOVED: return "Item not removed"; //$NON-NLS-1$ 3383 case ERROR_NOT_IMPLEMENTED: return "Not implemented"; //$NON-NLS-1$ 3384 case ERROR_MENU_NOT_DROP_DOWN: return "Menu must be a drop down"; //$NON-NLS-1$ 3385 case ERROR_THREAD_INVALID_ACCESS: return "Invalid thread access"; //$NON-NLS-1$ 3386 case ERROR_WIDGET_DISPOSED: return "Widget is disposed"; //$NON-NLS-1$ 3387 case ERROR_MENUITEM_NOT_CASCADE: return "Menu item is not a CASCADE"; //$NON-NLS-1$ 3388 case ERROR_CANNOT_SET_SELECTION: return "Cannot set selection"; //$NON-NLS-1$ 3389 case ERROR_CANNOT_SET_MENU: return "Cannot set menu"; //$NON-NLS-1$ 3390 case ERROR_CANNOT_SET_ENABLED: return "Cannot set the enabled state"; //$NON-NLS-1$ 3391 case ERROR_CANNOT_GET_ENABLED: return "Cannot get the enabled state"; //$NON-NLS-1$ 3392 case ERROR_INVALID_PARENT: return "Widget has the wrong parent"; //$NON-NLS-1$ 3393 case ERROR_MENU_NOT_BAR: return "Menu is not a BAR"; //$NON-NLS-1$ 3394 case ERROR_CANNOT_GET_COUNT: return "Cannot get count"; //$NON-NLS-1$ 3395 case ERROR_MENU_NOT_POP_UP: return "Menu is not a POP_UP"; //$NON-NLS-1$ 3396 case ERROR_UNSUPPORTED_DEPTH: return "Unsupported color depth"; //$NON-NLS-1$ 3397 case ERROR_IO: return "i/o error"; //$NON-NLS-1$ 3398 case ERROR_INVALID_IMAGE: return "Invalid image"; //$NON-NLS-1$ 3399 case ERROR_UNSUPPORTED_FORMAT: return "Unsupported or unrecognized format"; //$NON-NLS-1$ 3400 case ERROR_INVALID_SUBCLASS: return "Subclassing not allowed"; //$NON-NLS-1$ 3401 case ERROR_GRAPHIC_DISPOSED: return "Graphic is disposed"; //$NON-NLS-1$ 3402 case ERROR_DEVICE_DISPOSED: return "Device is disposed"; //$NON-NLS-1$ 3403 case ERROR_FAILED_EXEC: return "Failed to execute runnable"; //$NON-NLS-1$ 3404 case ERROR_FAILED_LOAD_LIBRARY: return "Unable to load library"; //$NON-NLS-1$ 3405 case ERROR_CANNOT_INVERT_MATRIX: return "Cannot invert matrix"; //$NON-NLS-1$ 3406 case ERROR_NO_GRAPHICS_LIBRARY: return "Unable to load graphics library"; //$NON-NLS-1$ 3407 case ERROR_INVALID_FONT: return "Font not valid"; //$NON-NLS-1$ 3408 } 3409    return "Unknown error"; //$NON-NLS-1$ 3410} 3411 3412/** 3413 * Returns the NLS'ed message for the given argument. 3414 * 3415 * @param key the key to look up 3416 * @return the message for the given key 3417 * 3418 * @exception IllegalArgumentException <ul> 3419 * <li>ERROR_NULL_ARGUMENT - if the key is null</li> 3420 * </ul> 3421 */ 3422public static String getMessage(String key) { 3423    return Compatibility.getMessage(key); 3424} 3425     3426/** 3427 * Returns the SWT platform name. 3428 * Examples: "win32", "motif", "gtk", "photon", "carbon" 3429 * 3430 * @return the SWT platform name 3431 */ 3432public static String getPlatform () { 3433    return Platform.PLATFORM; 3434} 3435 3436/** 3437 * Returns the SWT version number as an integer. 3438 * Example: "SWT051" == 51 3439 * 3440 * @return the SWT version number 3441 */ 3442public static int getVersion () { 3443    return Library.SWT_VERSION; 3444} 3445 3446/** 3447 * Throws an appropriate exception based on the passed in error code. 3448 * 3449 * @param code the SWT error code 3450 */ 3451public static void error (int code) { 3452    error (code, null); 3453} 3454 3455/** 3456 * Throws an appropriate exception based on the passed in error code. 3457 * The <code>throwable</code> argument should be either null, or the 3458 * throwable which caused SWT to throw an exception. 3459 * <p> 3460 * In SWT, errors are reported by throwing one of three exceptions: 3461 * <dl> 3462 * <dd>java.lang.IllegalArgumentException</dd> 3463 * <dt>thrown whenever one of the API methods is invoked with an illegal argument</dt> 3464 * <dd>org.eclipse.swt.SWTException (extends java.lang.RuntimeException)</dd> 3465 * <dt>thrown whenever a recoverable error happens internally in SWT</dt> 3466 * <dd>org.eclipse.swt.SWTError (extends java.lang.Error)</dd> 3467 * <dt>thrown whenever a <b>non-recoverable</b> error happens internally in SWT</dt> 3468 * </dl> 3469 * This method provides the logic which maps between error codes 3470 * and one of the above exceptions. 3471 * </p> 3472 * 3473 * @param code the SWT error code. 3474 * @param throwable the exception which caused the error to occur. 3475 * 3476 * @see SWTError 3477 * @see SWTException 3478 * @see IllegalArgumentException 3479 */ 3480public static void error (int code, Throwable throwable) { 3481    error (code, throwable, null); 3482} 3483 3484/** 3485 * Throws an appropriate exception based on the passed in error code. 3486 * The <code>throwable</code> argument should be either null, or the 3487 * throwable which caused SWT to throw an exception. 3488 * <p> 3489 * In SWT, errors are reported by throwing one of three exceptions: 3490 * <dl> 3491 * <dd>java.lang.IllegalArgumentException</dd> 3492 * <dt>thrown whenever one of the API methods is invoked with an illegal argument</dt> 3493 * <dd>org.eclipse.swt.SWTException (extends java.lang.RuntimeException)</dd> 3494 * <dt>thrown whenever a recoverable error happens internally in SWT</dt> 3495 * <dd>org.eclipse.swt.SWTError (extends java.lang.Error)</dd> 3496 * <dt>thrown whenever a <b>non-recoverable</b> error happens internally in SWT</dt> 3497 * </dl> 3498 * This method provides the logic which maps between error codes 3499 * and one of the above exceptions. 3500 * </p> 3501 * 3502 * @param code the SWT error code. 3503 * @param throwable the exception which caused the error to occur. 3504 * @param detail more information about error. 3505 * 3506 * @see SWTError 3507 * @see SWTException 3508 * @see IllegalArgumentException 3509 * 3510 * @since 3.0 3511 */ 3512public static void error (int code, Throwable throwable, String detail) { 3513 3514    /* 3515    * This code prevents the creation of "chains" of SWTErrors and 3516    * SWTExceptions which in turn contain other SWTErrors and 3517    * SWTExceptions as their throwable. This can occur when low level 3518    * code throws an exception past a point where a higher layer is 3519    * being "safe" and catching all exceptions. (Note that, this is 3520    * _a_bad_thing_ which we always try to avoid.) 3521    * 3522    * On the theory that the low level code is closest to the 3523    * original problem, we simply re-throw the original exception here. 3524    * 3525    * NOTE: Exceptions thrown in syncExec and asyncExec must be 3526    * wrapped. 3527    */ 3528    if (code != SWT.ERROR_FAILED_EXEC) { 3529        if (throwable instanceof SWTError) throw (SWTError) throwable; 3530        if (throwable instanceof SWTException) throw (SWTException) throwable; 3531    } 3532 3533    String message = findErrorText (code); 3534    if (detail != null) message += detail; 3535    switch (code) { 3536         3537        /* Illegal Arguments (non-fatal) */ 3538        case ERROR_NULL_ARGUMENT: 3539        case ERROR_CANNOT_BE_ZERO: 3540        case ERROR_INVALID_ARGUMENT: 3541        case ERROR_MENU_NOT_BAR: 3542        case ERROR_MENU_NOT_DROP_DOWN: 3543        case ERROR_MENU_NOT_POP_UP: 3544        case ERROR_MENUITEM_NOT_CASCADE: 3545        case ERROR_INVALID_PARENT: 3546        case ERROR_INVALID_RANGE: { 3547            throw new IllegalArgumentException (message); 3548        } 3549         3550        /* SWT Exceptions (non-fatal) */ 3551        case ERROR_INVALID_SUBCLASS: 3552        case ERROR_THREAD_INVALID_ACCESS: 3553        case ERROR_WIDGET_DISPOSED: 3554        case ERROR_GRAPHIC_DISPOSED: 3555        case ERROR_DEVICE_DISPOSED: 3556        case ERROR_INVALID_IMAGE: 3557        case ERROR_UNSUPPORTED_DEPTH: 3558        case ERROR_UNSUPPORTED_FORMAT: 3559        case ERROR_FAILED_EXEC: 3560        case ERROR_CANNOT_INVERT_MATRIX: 3561        case ERROR_NO_GRAPHICS_LIBRARY: 3562        case ERROR_IO: { 3563            SWTException exception = new SWTException (code, message); 3564            exception.throwable = throwable; 3565            throw exception; 3566        } 3567         3568        /* Operation System Errors (fatal, may occur only on some platforms) */ 3569        case ERROR_CANNOT_GET_COUNT: 3570        case ERROR_CANNOT_GET_ENABLED: 3571        case ERROR_CANNOT_GET_ITEM: 3572        case ERROR_CANNOT_GET_ITEM_HEIGHT: 3573        case ERROR_CANNOT_GET_SELECTION: 3574        case ERROR_CANNOT_GET_TEXT: 3575        case ERROR_CANNOT_SET_ENABLED: 3576        case ERROR_CANNOT_SET_MENU: 3577        case ERROR_CANNOT_SET_SELECTION: 3578        case ERROR_CANNOT_SET_TEXT: 3579        case ERROR_ITEM_NOT_ADDED: 3580        case ERROR_ITEM_NOT_REMOVED: 3581        case ERROR_NO_HANDLES: 3582        //FALL THROUGH 3583 3584        /* SWT Errors (fatal, may occur only on some platforms) */ 3585        case ERROR_FAILED_LOAD_LIBRARY: 3586        case ERROR_NO_MORE_CALLBACKS: 3587        case ERROR_NOT_IMPLEMENTED: 3588        case ERROR_UNSPECIFIED: { 3589            SWTError error = new SWTError (code, message); 3590            error.throwable = throwable; 3591            throw error; 3592        } 3593    } 3594     3595    /* Unknown/Undefined Error */ 3596    SWTError error = new SWTError (code, message); 3597    error.throwable = throwable; 3598    throw error; 3599} 3600 3601static { 3602    /* 3603    * These values represent bit masks that may need to 3604    * expand in the future. Therefore they are not initialized 3605    * in the declaration to stop the compiler from inlining. 3606    */ 3607    BUTTON_MASK = BUTTON1 | BUTTON2 | BUTTON3 | BUTTON4 | BUTTON5; 3608    MODIFIER_MASK = ALT | SHIFT | CTRL | COMMAND; 3609     3610    /* 3611    * These values can be different on different platforms. 3612    * Therefore they are not initialized in the declaration 3613    * to stop the compiler from inlining. 3614    */ 3615    String platform = getPlatform (); 3616    if ("carbon".equals (platform)) { //$NON-NLS-1$ 3617 MOD1 = COMMAND; 3618        MOD2 = SHIFT; 3619        MOD3 = ALT; 3620        MOD4 = CONTROL; 3621    } else { 3622        MOD1 = CONTROL; 3623        MOD2 = SHIFT; 3624        MOD3 = ALT; 3625        MOD4 = 0; 3626    } 3627} 3628} 3629

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