src/motif/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dialog.cpp
   3 // Purpose:     wxDialog class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "dialog.h"
  14 #endif
  15
  16 #include "wx/dialog.h"
  17 #include "wx/utils.h"
  18 #include "wx/frame.h"
  19 #include "wx/app.h"
  20 #include "wx/settings.h"
  21
  22 #include <Xm/Xm.h>
  23
  24 #include <X11/Shell.h>
  25 #if XmVersion >= 1002
  26 #include <Xm/XmAll.h>
  27 #endif
  28 #include <Xm/MwmUtil.h>
  29 #include <Xm/Label.h>
  30 #include <Xm/BulletinB.h>
  31 #include <Xm/Frame.h>
  32 #include <Xm/Text.h>
  33 #include <Xm/DialogS.h>
  34 #include <Xm/FileSB.h>
  35 #include <Xm/RowColumn.h>
  36 #include <Xm/LabelG.h>
  37 #include <Xm/AtomMgr.h>
  38 #if   XmVersion > 1000
  39 #include <Xm/Protocols.h>
  40 #endif
  41
  42 #include "wx/motif/private.h"
  43
  44 static void wxCloseDialogCallback(Widget widget, XtPointer client_data, XmAnyCallbackStruct *cbs);
  45 static void wxDialogBoxRepaintProc(Widget w, XtPointer c_data, XEvent *event, char *);
  46 static void wxDialogBoxEventHandler (Widget    wid,
  47                               XtPointer client_data,
  48                               XEvent*   event,
  49                               Boolean *continueToDispatch);
  50
  51 static void wxUnmapBulletinBoard(Widget dialog, wxDialog *client,XtPointer call);
  52
  53 // A stack of modal_showing flags, since we can't rely
  54 // on accessing wxDialog::m_modalShowing within
  55 // wxDialog::Show in case a callback has deleted the wxDialog.
  56 static wxList wxModalShowingStack;
  57
  58 // Lists to keep track of windows, so we can disable/enable them
  59 // for modal dialogs
  60 wxList wxModalDialogs;
  61 wxList wxModelessWindows;  // Frames and modeless dialogs
  62 extern wxList wxPendingDelete;
  63
  64 #define wxUSE_INVISIBLE_RESIZE 1
  65
  66 #if !USE_SHARED_LIBRARY
  67 IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxPanel)
  68
  69 BEGIN_EVENT_TABLE(wxDialog, wxPanel)
  70   EVT_BUTTON(wxID_OK, wxDialog::OnOK)
  71   EVT_BUTTON(wxID_APPLY, wxDialog::OnApply)
  72   EVT_BUTTON(wxID_CANCEL, wxDialog::OnCancel)
  73   EVT_CHAR_HOOK(wxDialog::OnCharHook)
  74   EVT_SYS_COLOUR_CHANGED(wxDialog::OnSysColourChanged)
  75   EVT_CLOSE(wxDialog::OnCloseWindow)
  76 END_EVENT_TABLE()
  77
  78 #endif
  79
  80 wxDialog::wxDialog()
  81 {
  82     m_modalShowing = FALSE;
  83     m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
  84 }
  85
  86 bool wxDialog::Create(wxWindow *parent, wxWindowID id,
  87            const wxString& title,
  88            const wxPoint& pos,
  89            const wxSize& size,
  90            long style,
  91            const wxString& name)
  92 {
  93     m_windowStyle = style;
  94     m_modalShowing = FALSE;
  95     m_dialogTitle = title;
  96
  97     m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
  98     m_foregroundColour = *wxBLACK;
  99
 100     SetName(name);
 101
 102     if (!parent)
 103         wxTopLevelWindows.Append(this);
 104
 105     if (parent) parent->AddChild(this);
 106
 107     if ( id == -1 )
 108         m_windowId = (int)NewControlId();
 109     else
 110         m_windowId = id;
 111
 112     Widget parentWidget = (Widget) 0;
 113     if (parent)
 114         parentWidget = (Widget) parent->GetTopWidget();
 115     if (!parent)
 116         parentWidget = (Widget) wxTheApp->GetTopLevelWidget();
 117
 118     wxASSERT_MSG( (parentWidget != (Widget) 0), "Could not find a suitable parent shell for dialog." );
 119
 120     Arg args[2];
 121     XtSetArg (args[0], XmNdefaultPosition, False);
 122     XtSetArg (args[1], XmNautoUnmanage, False);
 123     Widget dialogShell = XmCreateBulletinBoardDialog(parentWidget, (char*) (const char*) name, args, 2);
 124     m_mainWidget = (WXWidget) dialogShell;
 125
 126     // We don't want margins, since there is enough elsewhere.
 127     XtVaSetValues(dialogShell,
 128           XmNmarginHeight,   0,
 129           XmNmarginWidth,    0,
 130           XmNresizePolicy, XmRESIZE_NONE,
 131           NULL) ;
 132
 133     Widget shell = XtParent(dialogShell) ;
 134     if (!title.IsNull())
 135     {
 136         XmString str = XmStringCreateSimple((char*) (const char*)title);
 137         XtVaSetValues(dialogShell,
 138                       XmNdialogTitle, str,
 139                       NULL);
 140         XmStringFree(str);
 141     }
 142
 143     m_windowFont = wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT);
 144     ChangeFont(FALSE);
 145
 146     wxAddWindowToTable(dialogShell, this);
 147
 148     // Intercept CLOSE messages from the window manager
 149     Atom WM_DELETE_WINDOW = XmInternAtom(XtDisplay(shell), "WM_DELETE_WINDOW", False);
 150
 151     /* Remove and add WM_DELETE_WINDOW so ours is only handler */
 152     /* Why do we have to do this for wxDialog, but not wxFrame? */
 153     XmRemoveWMProtocols(shell, &WM_DELETE_WINDOW, 1);
 154     XmAddWMProtocols(shell, &WM_DELETE_WINDOW, 1);
 155     XmActivateWMProtocol(shell, WM_DELETE_WINDOW);
 156
 157     // Modified Steve Hammes for Motif 2.0
 158 #if (XmREVISION > 1 || XmVERSION > 1)
 159     XmAddWMProtocolCallback(shell, WM_DELETE_WINDOW, (XtCallbackProc) wxCloseDialogCallback, (XtPointer)this);
 160 #elif XmREVISION == 1
 161     XmAddWMProtocolCallback(shell, WM_DELETE_WINDOW, (XtCallbackProc) wxCloseDialogCallback, (caddr_t)this);
 162 #else
 163     XmAddWMProtocolCallback(shell, WM_DELETE_WINDOW, (void (*)())wxCloseDialogCallback, (caddr_t)this);
 164 #endif
 165
 166     XtTranslations ptr ;
 167     XtOverrideTranslations(dialogShell,
 168                 ptr = XtParseTranslationTable("<Configure>: resize()"));
 169     XtFree((char *)ptr);
 170
 171     // Can't remember what this was about... but I think it's necessary.
 172
 173     if (wxUSE_INVISIBLE_RESIZE)
 174     {
 175       if (pos.x > -1)
 176         XtVaSetValues(dialogShell, XmNx, pos.x,
 177                     NULL);
 178       if (pos.y > -1)
 179         XtVaSetValues(dialogShell, XmNy, pos.y,
 180                     NULL);
 181
 182       if (size.x > -1)
 183         XtVaSetValues(dialogShell, XmNwidth, size.x, NULL);
 184       if (size.y > -1)
 185         XtVaSetValues(dialogShell, XmNheight, size.y, NULL);
 186     }
 187
 188     // This patch come from Torsten Liermann lier@lier1.muc.de
 189     if (XmIsMotifWMRunning(shell))
 190     {
 191         int decor = 0 ;
 192         if (m_windowStyle & wxRESIZE_BORDER)
 193           decor |= MWM_DECOR_RESIZEH ;
 194         if (m_windowStyle & wxSYSTEM_MENU)
 195           decor |= MWM_DECOR_MENU;
 196         if ((m_windowStyle & wxCAPTION) ||
 197             (m_windowStyle & wxTINY_CAPTION_HORIZ) ||
 198             (m_windowStyle & wxTINY_CAPTION_VERT))
 199           decor |= MWM_DECOR_TITLE;
 200         if (m_windowStyle & wxTHICK_FRAME)
 201           decor |= MWM_DECOR_BORDER;
 202         if (m_windowStyle & wxMINIMIZE_BOX)
 203           decor |= MWM_DECOR_MINIMIZE;
 204         if (m_windowStyle & wxMAXIMIZE_BOX)
 205           decor |= MWM_DECOR_MAXIMIZE;
 206
 207         XtVaSetValues(shell,XmNmwmDecorations,decor,NULL) ;
 208     }
 209     // This allows non-Motif window managers to support at least the
 210     // no-decorations case.
 211     else
 212     {
 213       if ((m_windowStyle & wxCAPTION) != wxCAPTION)
 214           XtVaSetValues((Widget) shell,XmNoverrideRedirect,TRUE,NULL);
 215     }
 216
 217     XtRealizeWidget(dialogShell);
 218
 219     XtAddCallback(dialogShell,XmNunmapCallback,
 220                  (XtCallbackProc)wxUnmapBulletinBoard,this) ;
 221
 222     // Positioning of the dialog doesn't work properly unless the dialog
 223     // is managed, so we manage without mapping to the screen.
 224     // To show, we map the shell (actually it's parent).
 225     if (!wxUSE_INVISIBLE_RESIZE)
 226         XtVaSetValues(shell, XmNmappedWhenManaged, FALSE, NULL);
 227
 228     if (!wxUSE_INVISIBLE_RESIZE)
 229     {
 230         XtManageChild(dialogShell);
 231         SetSize(pos.x, pos.y, size.x, size.y);
 232     }
 233     XtAddEventHandler(dialogShell,ExposureMask,FALSE,
 234                           wxDialogBoxRepaintProc, (XtPointer) this);
 235
 236     XtAddEventHandler(dialogShell,
 237        ButtonPressMask | ButtonReleaseMask | PointerMotionMask | KeyPressMask,
 238        FALSE,
 239        wxDialogBoxEventHandler,
 240        (XtPointer)this);
 241
 242     ChangeBackgroundColour();
 243
 244     return TRUE;
 245 }
 246
 247 void wxDialog::SetModal(bool flag)
 248 {
 249     if ( flag )
 250         m_windowStyle |= wxDIALOG_MODAL ;
 251     else
 252         if ( m_windowStyle & wxDIALOG_MODAL )
 253           m_windowStyle -= wxDIALOG_MODAL ;
 254
 255   wxModelessWindows.DeleteObject(this);
 256   if (!flag)
 257     wxModelessWindows.Append(this);
 258 }
 259
 260 wxDialog::~wxDialog()
 261 {
 262     m_modalShowing = FALSE;
 263     if (!wxUSE_INVISIBLE_RESIZE && m_mainWidget)
 264     {
 265       XtUnmapWidget((Widget) m_mainWidget);
 266     }
 267
 268     wxTopLevelWindows.DeleteObject(this);
 269
 270     if ( (GetWindowStyleFlag() & wxDIALOG_MODAL) != wxDIALOG_MODAL )
 271       wxModelessWindows.DeleteObject(this);
 272
 273     // If this is the last top-level window, exit.
 274     if (wxTheApp && (wxTopLevelWindows.Number() == 0))
 275     {
 276       wxTheApp->SetTopWindow(NULL);
 277
 278       if (wxTheApp->GetExitOnFrameDelete())
 279       {
 280          wxTheApp->ExitMainLoop();
 281       }
 282     }
 283
 284     // This event-flushing code used to be in wxWindow::PostDestroyChildren (wx_dialog.cpp)
 285     // but I think this should work, if we destroy the children first.
 286     // Note that this might need to be done for wxFrame also.
 287     DestroyChildren();
 288
 289     // Now process all events, because otherwise
 290     // this might remain on the screen.
 291     Display* display;
 292     if (m_mainWidget)
 293       display = XtDisplay((Widget) m_mainWidget);
 294     else
 295       display = (Display*) wxGetDisplay();
 296
 297     XSync(display, FALSE);
 298     XEvent event;
 299     while (XtAppPending((XtAppContext) wxTheApp->GetAppContext())) {
 300       XFlush(display);
 301       XtAppNextEvent((XtAppContext) wxTheApp->GetAppContext(), &event);
 302       XtDispatchEvent(&event);
 303     }
 304 }
 305
 306 // By default, pressing escape cancels the dialog
 307 void wxDialog::OnCharHook(wxKeyEvent& event)
 308 {
 309   if (event.m_keyCode == WXK_ESCAPE)
 310   {
 311                 // Behaviour changed in 2.0: we'll send a Cancel message
 312                 // to the dialog instead of Close.
 313                 wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 314                 cancelEvent.SetEventObject( this );
 315                 GetEventHandler()->ProcessEvent(cancelEvent);
 316
 317                 return;
 318   }
 319   // We didn't process this event.
 320   event.Skip();
 321 }
 322
 323 void wxDialog::Iconize(bool WXUNUSED(iconize))
 324 {
 325   // Can't iconize a dialog in Motif, apparently
 326   // TODO: try using the parent of m_mainShell.
 327 //  XtVaSetValues((Widget) m_mainWidget, XmNiconic, iconize, NULL);
 328 }
 329
 330 bool wxDialog::IsIconized() const
 331 {
 332   /*
 333     Boolean iconic;
 334     XtVaGetValues((Widget) m_mainWidget, XmNiconic, &iconic, NULL);
 335
 336     return iconic;
 337    */
 338     return FALSE;
 339 }
 340
 341 void wxDialog::SetSize(int x, int y, int width, int height, int sizeFlags)
 342 {
 343     XtVaSetValues((Widget) m_mainWidget, XmNresizePolicy, XmRESIZE_ANY, NULL);
 344     wxWindow::SetSize(x, y, width, height, sizeFlags);
 345     XtVaSetValues((Widget) m_mainWidget, XmNresizePolicy, XmRESIZE_NONE, NULL);
 346 }
 347
 348 void wxDialog::SetClientSize(int width, int height)
 349 {
 350     SetSize(-1, -1, width, height);
 351 }
 352
 353
 354 void wxDialog::SetTitle(const wxString& title)
 355 {
 356     m_dialogTitle = title;
 357     if (!title.IsNull())
 358     {
 359         XmString str = XmStringCreateSimple((char*) (const char*) title);
 360         XtVaSetValues((Widget) m_mainWidget,
 361                   XmNtitle, (char*) (const char*) title,
 362                   XmNdialogTitle, str, // Roberto Cocchi
 363                   XmNiconName, (char*) (const char*) title,
 364                   NULL);
 365         XmStringFree(str);
 366     }
 367 }
 368
 369 wxString wxDialog::GetTitle() const
 370 {
 371   return m_dialogTitle;
 372 }
 373
 374 void wxDialog::Centre(int direction)
 375 {
 376   int x_offset,y_offset ;
 377   int display_width, display_height;
 378   int  width, height, x, y;
 379   wxWindow *parent = GetParent();
 380   if ((direction & wxCENTER_FRAME) && parent)
 381   {
 382       parent->GetPosition(&x_offset,&y_offset) ;
 383       parent->GetSize(&display_width,&display_height) ;
 384   }
 385   else
 386   {
 387     wxDisplaySize(&display_width, &display_height);
 388     x_offset = 0 ;
 389     y_offset = 0 ;
 390   }
 391
 392   GetSize(&width, &height);
 393   GetPosition(&x, &y);
 394
 395   if (direction & wxHORIZONTAL)
 396     x = (int)((display_width - width)/2);
 397   if (direction & wxVERTICAL)
 398     y = (int)((display_height - height)/2);
 399
 400   SetSize(x+x_offset, y+y_offset, width, height);
 401 }
 402
 403 void wxDialog::Raise()
 404 {
 405     Window parent_window = XtWindow((Widget) m_mainWidget),
 406            next_parent   = XtWindow((Widget) m_mainWidget),
 407            root          = RootWindowOfScreen(XtScreen((Widget) m_mainWidget));
 408     // search for the parent that is child of ROOT, because the WM may
 409     // reparent twice and notify only the next parent (like FVWM)
 410     while (next_parent != root) {
 411         Window *theChildren; unsigned int n;
 412         parent_window = next_parent;
 413         XQueryTree(XtDisplay((Widget) m_mainWidget), parent_window, &root,
 414                    &next_parent, &theChildren, &n);
 415         XFree(theChildren); // not needed
 416     }
 417     XRaiseWindow(XtDisplay((Widget) m_mainWidget), parent_window);
 418 }
 419
 420 void wxDialog::Lower()
 421 {
 422     Window parent_window = XtWindow((Widget) m_mainWidget),
 423            next_parent   = XtWindow((Widget) m_mainWidget),
 424            root          = RootWindowOfScreen(XtScreen((Widget) m_mainWidget));
 425     // search for the parent that is child of ROOT, because the WM may
 426     // reparent twice and notify only the next parent (like FVWM)
 427     while (next_parent != root) {
 428         Window *theChildren; unsigned int n;
 429         parent_window = next_parent;
 430         XQueryTree(XtDisplay((Widget) m_mainWidget), parent_window, &root,
 431                    &next_parent, &theChildren, &n);
 432         XFree(theChildren); // not needed
 433     }
 434     XLowerWindow(XtDisplay((Widget) m_mainWidget), parent_window);
 435 }
 436
 437 bool wxDialog::Show(bool show)
 438 {
 439     m_isShown = show;
 440
 441     if (show)
 442     {
 443         if (!wxUSE_INVISIBLE_RESIZE)
 444           XtMapWidget(XtParent((Widget) m_mainWidget));
 445         else
 446           XtManageChild((Widget) m_mainWidget) ;
 447
 448         XRaiseWindow(XtDisplay((Widget) m_mainWidget), XtWindow((Widget) m_mainWidget));
 449
 450     }
 451     else
 452     {
 453         if (!wxUSE_INVISIBLE_RESIZE)
 454             XtUnmapWidget(XtParent((Widget) m_mainWidget));
 455         else
 456             XtUnmanageChild((Widget) m_mainWidget) ;
 457
 458         XFlush(XtDisplay((Widget) wxTheApp->GetTopLevelWidget()));
 459         XSync(XtDisplay((Widget) wxTheApp->GetTopLevelWidget()), FALSE);
 460     }
 461
 462     return TRUE;
 463 }
 464
 465 // Shows a dialog modally, returning a return code
 466 int wxDialog::ShowModal()
 467 {
 468     m_windowStyle |= wxDIALOG_MODAL;
 469
 470     Show(TRUE);
 471
 472     if (m_modalShowing)
 473         return 0;
 474
 475     wxModalShowingStack.Insert((wxObject *)TRUE);
 476
 477     m_modalShowing = TRUE;
 478     //    XtAddGrab((Widget) m_mainWidget, TRUE, FALSE);
 479
 480     XEvent event;
 481
 482     // Loop until we signal that the dialog should be closed
 483     while ((wxModalShowingStack.Number() > 0) && ((int)(wxModalShowingStack.First()->Data()) != 0))
 484     {
 485 //        XtAppProcessEvent((XtAppContext) wxTheApp->GetAppContext(), XtIMAll);
 486
 487         XtAppNextEvent((XtAppContext) wxTheApp->GetAppContext(), &event);
 488         wxTheApp->ProcessXEvent((WXEvent*) &event);
 489     }
 490
 491     // Remove modal dialog flag from stack
 492     wxNode *node = wxModalShowingStack.First();
 493     if (node)
 494       delete node;
 495
 496     // Now process all events in case they get sent to a destroyed dialog
 497     XSync(XtDisplay((Widget) wxTheApp->GetTopLevelWidget()), FALSE);
 498     while (XtAppPending((XtAppContext) wxTheApp->GetAppContext()))
 499     {
 500         XFlush(XtDisplay((Widget) wxTheApp->GetTopLevelWidget()));
 501         XtAppNextEvent((XtAppContext) wxTheApp->GetAppContext(), &event);
 502
 503         wxTheApp->ProcessXEvent((WXEvent*) &event);
 504     }
 505
 506     // TODO: is it safe to call this, if the dialog may have been deleted
 507     // by now? Probably only if we're using delayed deletion of dialogs.
 508     return GetReturnCode();
 509 }
 510
 511 void wxDialog::EndModal(int retCode)
 512 {
 513     if (!m_modalShowing)
 514         return;
 515
 516     SetReturnCode(retCode);
 517
 518     XtRemoveGrab((Widget) m_mainWidget);
 519
 520     Show(FALSE);
 521
 522     m_modalShowing = FALSE;
 523
 524     wxNode *node = wxModalShowingStack.First();
 525     if (node)
 526       node->SetData((wxObject *)FALSE);
 527 }
 528
 529 // Standard buttons
 530 void wxDialog::OnOK(wxCommandEvent& WXUNUSED(event))
 531 {
 532         if ( Validate() && TransferDataFromWindow() )
 533         {
 534         if ( IsModal() )
 535             EndModal(wxID_OK);
 536         else
 537         {
 538                     SetReturnCode(wxID_OK);
 539                     this->Show(FALSE);
 540         }
 541         }
 542 }
 543
 544 void wxDialog::OnApply(wxCommandEvent& WXUNUSED(event))
 545 {
 546         if (Validate())
 547                 TransferDataFromWindow();
 548         // TODO probably need to disable the Apply button until things change again
 549 }
 550
 551 void wxDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
 552 {
 553     if ( IsModal() )
 554         EndModal(wxID_CANCEL);
 555     else
 556     {
 557         SetReturnCode(wxID_CANCEL);
 558                 this->Show(FALSE);
 559     }
 560 }
 561
 562 bool wxDialog::OnClose()
 563 {
 564         // Behaviour changed in 2.0: we'll send a Cancel message by default,
 565     // which may close the dialog.
 566     // Check for looping if the Cancel event handler calls Close()
 567
 568     static wxList closing;
 569
 570     if ( closing.Member(this) )
 571         return FALSE;
 572
 573     closing.Append(this);
 574
 575         wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 576         cancelEvent.SetEventObject( this );
 577         GetEventHandler()->ProcessEvent(cancelEvent);
 578
 579     closing.DeleteObject(this);
 580
 581         return FALSE;
 582 }
 583
 584 void wxDialog::OnCloseWindow(wxCloseEvent& event)
 585 {
 586     // Compatibility
 587     if ( GetEventHandler()->OnClose() || event.GetForce())
 588     {
 589         this->Destroy();
 590     }
 591 }
 592
 593 // Destroy the window (delayed, if a managed window)
 594 bool wxDialog::Destroy()
 595 {
 596   if (!wxPendingDelete.Member(this))
 597     wxPendingDelete.Append(this);
 598   return TRUE;
 599 }
 600
 601 void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
 602 {
 603   SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
 604   Refresh();
 605 }
 606
 607 void wxDialog::Fit()
 608 {
 609 }
 610
 611 // Handle a close event from the window manager
 612 static void wxCloseDialogCallback( Widget WXUNUSED(widget), XtPointer client_data,
 613                                    XmAnyCallbackStruct *WXUNUSED(cbs))
 614 {
 615   wxDialog *dialog = (wxDialog *)client_data;
 616   wxCloseEvent closeEvent(wxEVT_CLOSE_WINDOW, dialog->GetId());
 617   closeEvent.SetEventObject(dialog);
 618
 619   // May delete the dialog (with delayed deletion)
 620   dialog->GetEventHandler()->ProcessEvent(closeEvent);
 621 }
 622
 623 // TODO: Preferably, we should have a universal repaint proc.
 624 // Meanwhile, use a special one for dialogs.
 625 static void wxDialogBoxRepaintProc(Widget w, XtPointer WXUNUSED(c_data), XEvent *event, char *)
 626 {
 627      Window window;
 628      Display *display;
 629
 630      wxWindow* win = (wxWindow *)wxWidgetHashTable->Get((long)w);
 631      if (!win)
 632        return;
 633
 634      switch(event -> type)
 635      {
 636           case Expose :
 637           {
 638                window = (Window) win -> GetXWindow();
 639                display = (Display *) win -> GetXDisplay();
 640
 641                wxRect* rect = new wxRect(event->xexpose.x, event->xexpose.y,
 642                                        event->xexpose.width, event->xexpose.height);
 643                win->m_updateRects.Append((wxObject*) rect);
 644
 645                if (event -> xexpose.count == 0)
 646                {
 647                     wxPaintEvent event(win->GetId());
 648                     event.SetEventObject(win);
 649                     win->GetEventHandler()->ProcessEvent(event);
 650
 651                     win->ClearUpdateRects();
 652                }
 653                break;
 654           }
 655         default :
 656           {
 657                cout << "\n\nNew Event ! is = " << event -> type << "\n";
 658                break;
 659           }
 660      }
 661 }
 662
 663 static void wxDialogBoxEventHandler (Widget    wid,
 664                               XtPointer WXUNUSED(client_data),
 665                               XEvent*   event,
 666                               Boolean *continueToDispatch)
 667 {
 668   wxDialog *dialog = (wxDialog *)wxWidgetHashTable->Get((long)wid);
 669   if (dialog)
 670   {
 671     wxMouseEvent wxevent(wxEVT_NULL);
 672     if (wxTranslateMouseEvent(wxevent, dialog, wid, event))
 673     {
 674         wxevent.SetEventObject(dialog);
 675         wxevent.SetId(dialog->GetId());
 676         dialog->GetEventHandler()->ProcessEvent(wxevent);
 677     }
 678     else
 679     {
 680       // An attempt to implement OnCharHook by calling OnCharHook first;
 681       // if this returns TRUE, set continueToDispatch to False
 682       // (don't continue processing).
 683       // Otherwise set it to True and call OnChar.
 684       wxKeyEvent keyEvent(wxEVENT_TYPE_CHAR);
 685       if (wxTranslateKeyEvent(keyEvent, dialog, wid, event))
 686       {
 687         keyEvent.SetEventObject(dialog);
 688         keyEvent.SetId(dialog->GetId());
 689         keyEvent.SetEventType(wxEVT_CHAR_HOOK);
 690         if (dialog->GetEventHandler()->ProcessEvent(keyEvent))
 691         {
 692             *continueToDispatch = False;
 693             return;
 694         }
 695         else
 696         {
 697             keyEvent.SetEventType(wxEVT_CHAR);
 698             dialog->GetEventHandler()->ProcessEvent(keyEvent);
 699         }
 700       }
 701     }
 702   }
 703   *continueToDispatch = True;
 704 }
 705
 706 static void wxUnmapBulletinBoard(Widget WXUNUSED(dialog), wxDialog *WXUNUSED(client), XtPointer WXUNUSED(call) )
 707 {
 708   /* This gets called when the dialog is being shown, which
 709    * defeats modal showing.
 710   client->m_modalShowing = FALSE ;
 711   client->m_isShown = FALSE;
 712   */
 713 }
 714
 715 void wxDialog::ChangeFont(bool keepOriginalSize)
 716 {
 717     wxWindow::ChangeFont(keepOriginalSize);
 718 }
 719
 720 void wxDialog::ChangeBackgroundColour()
 721 {
 722     if (GetMainWidget())
 723         DoChangeBackgroundColour(GetMainWidget(), m_backgroundColour);
 724 }
 725
 726 void wxDialog::ChangeForegroundColour()
 727 {
 728     if (GetMainWidget())
 729         DoChangeForegroundColour(GetMainWidget(), m_foregroundColour);
 730 }
 731