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[1];
 121     XtSetArg (args[0], XmNdefaultPosition, False);
 122     Widget dialogShell = XmCreateBulletinBoardDialog(parentWidget, (char*) (const char*) name, args, 1);
 123     m_mainWidget = (WXWidget) dialogShell;
 124
 125     // We don't want margins, since there is enough elsewhere.
 126     XtVaSetValues(dialogShell,
 127           XmNmarginHeight,   0,
 128           XmNmarginWidth,    0,
 129           XmNresizePolicy, XmRESIZE_NONE,
 130           NULL) ;
 131
 132     Widget shell = XtParent(dialogShell) ;
 133     if (!title.IsNull())
 134     {
 135         XmString str = XmStringCreateSimple((char*) (const char*)title);
 136         XtVaSetValues(dialogShell,
 137                       XmNdialogTitle, str,
 138                       NULL);
 139         XmStringFree(str);
 140     }
 141
 142     m_windowFont = wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT);
 143     ChangeFont(FALSE);
 144
 145     wxAddWindowToTable(dialogShell, this);
 146
 147     // Intercept CLOSE messages from the window manager
 148     Atom WM_DELETE_WINDOW = XmInternAtom(XtDisplay(shell), "WM_DELETE_WINDOW", False);
 149
 150     /* Remove and add WM_DELETE_WINDOW so ours is only handler */
 151     /* Why do we have to do this for wxDialog, but not wxFrame? */
 152     XmRemoveWMProtocols(shell, &WM_DELETE_WINDOW, 1);
 153     XmAddWMProtocols(shell, &WM_DELETE_WINDOW, 1);
 154     XmActivateWMProtocol(shell, WM_DELETE_WINDOW);
 155
 156     // Modified Steve Hammes for Motif 2.0
 157 #if (XmREVISION > 1 || XmVERSION > 1)
 158     XmAddWMProtocolCallback(shell, WM_DELETE_WINDOW, (XtCallbackProc) wxCloseDialogCallback, (XtPointer)this);
 159 #elif XmREVISION == 1
 160     XmAddWMProtocolCallback(shell, WM_DELETE_WINDOW, (XtCallbackProc) wxCloseDialogCallback, (caddr_t)this);
 161 #else
 162     XmAddWMProtocolCallback(shell, WM_DELETE_WINDOW, (void (*)())wxCloseDialogCallback, (caddr_t)this);
 163 #endif
 164
 165     XtTranslations ptr ;
 166     XtOverrideTranslations(dialogShell,
 167                 ptr = XtParseTranslationTable("<Configure>: resize()"));
 168     XtFree((char *)ptr);
 169
 170     // Can't remember what this was about... but I think it's necessary.
 171
 172     if (wxUSE_INVISIBLE_RESIZE)
 173     {
 174       if (pos.x > -1)
 175         XtVaSetValues(dialogShell, XmNx, pos.x,
 176                     NULL);
 177       if (pos.y > -1)
 178         XtVaSetValues(dialogShell, XmNy, pos.y,
 179                     NULL);
 180
 181       if (size.x > -1)
 182         XtVaSetValues(dialogShell, XmNwidth, size.x, NULL);
 183       if (size.y > -1)
 184         XtVaSetValues(dialogShell, XmNheight, size.y, NULL);
 185     }
 186
 187     // This patch come from Torsten Liermann lier@lier1.muc.de
 188     if (XmIsMotifWMRunning(shell))
 189     {
 190         int decor = 0 ;
 191         if (m_windowStyle & wxRESIZE_BORDER)
 192           decor |= MWM_DECOR_RESIZEH ;
 193         if (m_windowStyle & wxSYSTEM_MENU)
 194           decor |= MWM_DECOR_MENU;
 195         if ((m_windowStyle & wxCAPTION) ||
 196             (m_windowStyle & wxTINY_CAPTION_HORIZ) ||
 197             (m_windowStyle & wxTINY_CAPTION_VERT))
 198           decor |= MWM_DECOR_TITLE;
 199         if (m_windowStyle & wxTHICK_FRAME)
 200           decor |= MWM_DECOR_BORDER;
 201         if (m_windowStyle & wxMINIMIZE_BOX)
 202           decor |= MWM_DECOR_MINIMIZE;
 203         if (m_windowStyle & wxMAXIMIZE_BOX)
 204           decor |= MWM_DECOR_MAXIMIZE;
 205
 206         XtVaSetValues(shell,XmNmwmDecorations,decor,NULL) ;
 207     }
 208     // This allows non-Motif window managers to support at least the
 209     // no-decorations case.
 210     else
 211     {
 212       if ((m_windowStyle & wxCAPTION) != wxCAPTION)
 213           XtVaSetValues((Widget) shell,XmNoverrideRedirect,TRUE,NULL);
 214     }
 215
 216     XtRealizeWidget(dialogShell);
 217
 218     XtAddCallback(dialogShell,XmNunmapCallback,
 219                  (XtCallbackProc)wxUnmapBulletinBoard,this) ;
 220
 221     // Positioning of the dialog doesn't work properly unless the dialog
 222     // is managed, so we manage without mapping to the screen.
 223     // To show, we map the shell (actually it's parent).
 224     if (!wxUSE_INVISIBLE_RESIZE)
 225         XtVaSetValues(shell, XmNmappedWhenManaged, FALSE, NULL);
 226
 227     if (!wxUSE_INVISIBLE_RESIZE)
 228     {
 229         XtManageChild(dialogShell);
 230         SetSize(pos.x, pos.y, size.x, size.y);
 231     }
 232     XtAddEventHandler(dialogShell,ExposureMask,FALSE,
 233                           wxDialogBoxRepaintProc, (XtPointer) this);
 234
 235     XtAddEventHandler(dialogShell,
 236        ButtonPressMask | ButtonReleaseMask | PointerMotionMask | KeyPressMask,
 237        FALSE,
 238        wxDialogBoxEventHandler,
 239        (XtPointer)this);
 240
 241     ChangeBackgroundColour();
 242
 243     return TRUE;
 244 }
 245
 246 void wxDialog::SetModal(bool flag)
 247 {
 248     if ( flag )
 249         m_windowStyle |= wxDIALOG_MODAL ;
 250     else
 251         if ( m_windowStyle & wxDIALOG_MODAL )
 252           m_windowStyle -= wxDIALOG_MODAL ;
 253
 254   wxModelessWindows.DeleteObject(this);
 255   if (!flag)
 256     wxModelessWindows.Append(this);
 257 }
 258
 259 wxDialog::~wxDialog()
 260 {
 261     m_modalShowing = FALSE;
 262     if (!wxUSE_INVISIBLE_RESIZE && m_mainWidget)
 263     {
 264       XtUnmapWidget((Widget) m_mainWidget);
 265     }
 266
 267     wxTopLevelWindows.DeleteObject(this);
 268
 269     if ( (GetWindowStyleFlag() & wxDIALOG_MODAL) != wxDIALOG_MODAL )
 270       wxModelessWindows.DeleteObject(this);
 271
 272     // If this is the last top-level window, exit.
 273     if (wxTheApp && (wxTopLevelWindows.Number() == 0))
 274     {
 275       wxTheApp->SetTopWindow(NULL);
 276
 277       if (wxTheApp->GetExitOnFrameDelete())
 278       {
 279          wxTheApp->ExitMainLoop();
 280       }
 281     }
 282
 283     // This event-flushing code used to be in wxWindow::PostDestroyChildren (wx_dialog.cpp)
 284     // but I think this should work, if we destroy the children first.
 285     // Note that this might need to be done for wxFrame also.
 286     DestroyChildren();
 287
 288     // Now process all events, because otherwise
 289     // this might remain on the screen.
 290     Display* display;
 291     if (m_mainWidget)
 292       display = XtDisplay((Widget) m_mainWidget);
 293     else
 294       display = (Display*) wxGetDisplay();
 295
 296     XSync(display, FALSE);
 297     XEvent event;
 298     while (XtAppPending((XtAppContext) wxTheApp->GetAppContext())) {
 299       XFlush(display);
 300       XtAppNextEvent((XtAppContext) wxTheApp->GetAppContext(), &event);
 301       XtDispatchEvent(&event);
 302     }
 303 }
 304
 305 // By default, pressing escape cancels the dialog
 306 void wxDialog::OnCharHook(wxKeyEvent& event)
 307 {
 308   if (event.m_keyCode == WXK_ESCAPE)
 309   {
 310                 // Behaviour changed in 2.0: we'll send a Cancel message
 311                 // to the dialog instead of Close.
 312                 wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 313                 cancelEvent.SetEventObject( this );
 314                 GetEventHandler()->ProcessEvent(cancelEvent);
 315
 316                 return;
 317   }
 318   // We didn't process this event.
 319   event.Skip();
 320 }
 321
 322 void wxDialog::Iconize(bool WXUNUSED(iconize))
 323 {
 324   // Can't iconize a dialog in Motif, apparently
 325   // TODO: try using the parent of m_mainShell.
 326 //  XtVaSetValues((Widget) m_mainWidget, XmNiconic, iconize, NULL);
 327 }
 328
 329 bool wxDialog::IsIconized() const
 330 {
 331   /*
 332     Boolean iconic;
 333     XtVaGetValues((Widget) m_mainWidget, XmNiconic, &iconic, NULL);
 334
 335     return iconic;
 336    */
 337     return FALSE;
 338 }
 339
 340 void wxDialog::SetSize(int x, int y, int width, int height, int sizeFlags)
 341 {
 342     XtVaSetValues((Widget) m_mainWidget, XmNresizePolicy, XmRESIZE_ANY, NULL);
 343     wxWindow::SetSize(x, y, width, height, sizeFlags);
 344     XtVaSetValues((Widget) m_mainWidget, XmNresizePolicy, XmRESIZE_NONE, NULL);
 345 }
 346
 347 void wxDialog::SetClientSize(int width, int height)
 348 {
 349     SetSize(-1, -1, width, height);
 350 }
 351
 352
 353 void wxDialog::SetTitle(const wxString& title)
 354 {
 355     m_dialogTitle = title;
 356     if (!title.IsNull())
 357     {
 358         XmString str = XmStringCreateSimple((char*) (const char*) title);
 359         XtVaSetValues((Widget) m_mainWidget,
 360                   XmNtitle, (char*) (const char*) title,
 361                   XmNdialogTitle, str, // Roberto Cocchi
 362                   XmNiconName, (char*) (const char*) title,
 363                   NULL);
 364         XmStringFree(str);
 365     }
 366 }
 367
 368 wxString wxDialog::GetTitle() const
 369 {
 370   return m_dialogTitle;
 371 }
 372
 373 void wxDialog::Centre(int direction)
 374 {
 375   int x_offset,y_offset ;
 376   int display_width, display_height;
 377   int  width, height, x, y;
 378   wxWindow *parent = GetParent();
 379   if ((direction & wxCENTER_FRAME) && parent)
 380   {
 381       parent->GetPosition(&x_offset,&y_offset) ;
 382       parent->GetSize(&display_width,&display_height) ;
 383   }
 384   else
 385   {
 386     wxDisplaySize(&display_width, &display_height);
 387     x_offset = 0 ;
 388     y_offset = 0 ;
 389   }
 390
 391   GetSize(&width, &height);
 392   GetPosition(&x, &y);
 393
 394   if (direction & wxHORIZONTAL)
 395     x = (int)((display_width - width)/2);
 396   if (direction & wxVERTICAL)
 397     y = (int)((display_height - height)/2);
 398
 399   SetSize(x+x_offset, y+y_offset, width, height);
 400 }
 401
 402 void wxDialog::Raise()
 403 {
 404     Window parent_window = XtWindow((Widget) m_mainWidget),
 405            next_parent   = XtWindow((Widget) m_mainWidget),
 406            root          = RootWindowOfScreen(XtScreen((Widget) m_mainWidget));
 407     // search for the parent that is child of ROOT, because the WM may
 408     // reparent twice and notify only the next parent (like FVWM)
 409     while (next_parent != root) {
 410         Window *theChildren; unsigned int n;
 411         parent_window = next_parent;
 412         XQueryTree(XtDisplay((Widget) m_mainWidget), parent_window, &root,
 413                    &next_parent, &theChildren, &n);
 414         XFree(theChildren); // not needed
 415     }
 416     XRaiseWindow(XtDisplay((Widget) m_mainWidget), parent_window);
 417 }
 418
 419 void wxDialog::Lower()
 420 {
 421     Window parent_window = XtWindow((Widget) m_mainWidget),
 422            next_parent   = XtWindow((Widget) m_mainWidget),
 423            root          = RootWindowOfScreen(XtScreen((Widget) m_mainWidget));
 424     // search for the parent that is child of ROOT, because the WM may
 425     // reparent twice and notify only the next parent (like FVWM)
 426     while (next_parent != root) {
 427         Window *theChildren; unsigned int n;
 428         parent_window = next_parent;
 429         XQueryTree(XtDisplay((Widget) m_mainWidget), parent_window, &root,
 430                    &next_parent, &theChildren, &n);
 431         XFree(theChildren); // not needed
 432     }
 433     XLowerWindow(XtDisplay((Widget) m_mainWidget), parent_window);
 434 }
 435
 436 bool wxDialog::Show(bool show)
 437 {
 438     m_isShown = show;
 439
 440     if (show)
 441     {
 442         if (!wxUSE_INVISIBLE_RESIZE)
 443           XtMapWidget(XtParent((Widget) m_mainWidget));
 444         else
 445           XtManageChild((Widget) m_mainWidget) ;
 446
 447         XRaiseWindow(XtDisplay((Widget) m_mainWidget), XtWindow((Widget) m_mainWidget));
 448
 449     }
 450     else
 451     {
 452         if (!wxUSE_INVISIBLE_RESIZE)
 453             XtUnmapWidget(XtParent((Widget) m_mainWidget));
 454         else
 455             XtUnmanageChild((Widget) m_mainWidget) ;
 456
 457         XFlush(XtDisplay((Widget) wxTheApp->GetTopLevelWidget()));
 458         XSync(XtDisplay((Widget) wxTheApp->GetTopLevelWidget()), FALSE);
 459     }
 460
 461     return TRUE;
 462 }
 463
 464 // Shows a dialog modally, returning a return code
 465 int wxDialog::ShowModal()
 466 {
 467     m_windowStyle |= wxDIALOG_MODAL;
 468
 469     Show(TRUE);
 470
 471     if (m_modalShowing)
 472         return 0;
 473
 474     wxModalShowingStack.Insert((wxObject *)TRUE);
 475
 476     m_modalShowing = TRUE;
 477     XtAddGrab((Widget) m_mainWidget, TRUE, FALSE);
 478     XEvent event;
 479
 480     // Loop until we signal that the dialog should be closed
 481     while ((wxModalShowingStack.Number() > 0) && (bool)wxModalShowingStack.First()->Data())
 482     {
 483         XtAppProcessEvent((XtAppContext) wxTheApp->GetAppContext(), XtIMAll);
 484     }
 485
 486     // Remove modal dialog flag from stack
 487     wxNode *node = wxModalShowingStack.First();
 488     if (node)
 489       delete node;
 490
 491     // Now process all events in case they get sent to a destroyed dialog
 492     XSync(XtDisplay((Widget) wxTheApp->GetTopLevelWidget()), FALSE);
 493     while (XtAppPending((XtAppContext) wxTheApp->GetAppContext()))
 494     {
 495         XFlush(XtDisplay((Widget) wxTheApp->GetTopLevelWidget()));
 496         XtAppNextEvent((XtAppContext) wxTheApp->GetAppContext(), &event);
 497         XtDispatchEvent(&event);
 498     }
 499
 500     // TODO: is it safe to call this, if the dialog may have been deleted
 501     // by now? Probably only if we're using delayed deletion of dialogs.
 502     return GetReturnCode();
 503 }
 504
 505 void wxDialog::EndModal(int retCode)
 506 {
 507     if (!m_modalShowing)
 508         return;
 509
 510     SetReturnCode(retCode);
 511
 512     XtRemoveGrab((Widget) m_mainWidget);
 513
 514     Show(FALSE);
 515
 516     m_modalShowing = FALSE;
 517
 518     wxNode *node = wxModalShowingStack.First();
 519     if (node)
 520       node->SetData((wxObject *)FALSE);
 521 }
 522
 523 // Standard buttons
 524 void wxDialog::OnOK(wxCommandEvent& WXUNUSED(event))
 525 {
 526         if ( Validate() && TransferDataFromWindow() )
 527         {
 528         if ( IsModal() )
 529             EndModal(wxID_OK);
 530         else
 531         {
 532                     SetReturnCode(wxID_OK);
 533                     this->Show(FALSE);
 534         }
 535         }
 536 }
 537
 538 void wxDialog::OnApply(wxCommandEvent& WXUNUSED(event))
 539 {
 540         if (Validate())
 541                 TransferDataFromWindow();
 542         // TODO probably need to disable the Apply button until things change again
 543 }
 544
 545 void wxDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
 546 {
 547     if ( IsModal() )
 548         EndModal(wxID_CANCEL);
 549     else
 550     {
 551         SetReturnCode(wxID_CANCEL);
 552                 this->Show(FALSE);
 553     }
 554 }
 555
 556 bool wxDialog::OnClose()
 557 {
 558         // Behaviour changed in 2.0: we'll send a Cancel message by default,
 559     // which may close the dialog.
 560     // Check for looping if the Cancel event handler calls Close()
 561
 562     static wxList closing;
 563
 564     if ( closing.Member(this) )
 565         return FALSE;
 566
 567     closing.Append(this);
 568
 569         wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 570         cancelEvent.SetEventObject( this );
 571         GetEventHandler()->ProcessEvent(cancelEvent);
 572
 573     closing.DeleteObject(this);
 574
 575         return FALSE;
 576 }
 577
 578 void wxDialog::OnCloseWindow(wxCloseEvent& event)
 579 {
 580     // Compatibility
 581     if ( GetEventHandler()->OnClose() || event.GetForce())
 582     {
 583         this->Destroy();
 584     }
 585 }
 586
 587 // Destroy the window (delayed, if a managed window)
 588 bool wxDialog::Destroy()
 589 {
 590   if (!wxPendingDelete.Member(this))
 591     wxPendingDelete.Append(this);
 592   return TRUE;
 593 }
 594
 595 void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
 596 {
 597   SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
 598   Refresh();
 599 }
 600
 601 void wxDialog::Fit()
 602 {
 603 }
 604
 605 // Handle a close event from the window manager
 606 static void wxCloseDialogCallback( Widget WXUNUSED(widget), XtPointer client_data,
 607                                    XmAnyCallbackStruct *WXUNUSED(cbs))
 608 {
 609   wxDialog *dialog = (wxDialog *)client_data;
 610   wxCloseEvent closeEvent(wxEVT_CLOSE_WINDOW, dialog->GetId());
 611   closeEvent.SetEventObject(dialog);
 612
 613   // May delete the dialog (with delayed deletion)
 614   dialog->GetEventHandler()->ProcessEvent(closeEvent);
 615 }
 616
 617 // TODO: Preferably, we should have a universal repaint proc.
 618 // Meanwhile, use a special one for dialogs.
 619 static void wxDialogBoxRepaintProc(Widget w, XtPointer WXUNUSED(c_data), XEvent *event, char *)
 620    {
 621      Window window;
 622      Display *display;
 623 /*
 624      static XRectangle *xrect;
 625      GC gc;
 626      int llp = 0;
 627      static int last_count = 0;
 628      static int draw_count = 0;
 629 */
 630
 631      wxWindow* win = (wxWindow *)wxWidgetHashTable->Get((long)w);
 632      if (!win)
 633        return;
 634
 635      switch(event -> type)
 636         {
 637           case Expose :
 638                window = (Window) win -> GetXWindow();
 639                display = (Display *) win -> GetXDisplay();
 640                /* TODO
 641                gc = (GC) panel -> GetDC() -> gc;
 642
 643                llp = event -> xexpose.count;
 644
 645                if ((last_count == 0) && (llp == 0))
 646                   {
 647                     xrect = new XRectangle[1];
 648                     xrect[0].x = event -> xexpose.x;
 649                     xrect[0].y = event -> xexpose.y;
 650                     xrect[0].width = event -> xexpose.width;
 651                     xrect[0].height = event -> xexpose.height;
 652
 653                     XSetClipRectangles(display,gc,0,0,xrect,1,Unsorted);
 654 //                    panel->DoPaint(xrect, 1);
 655                     panel->GetEventHandler()->OnPaint();
 656
 657                     delete xrect;
 658                   }
 659
 660                if ((last_count == 0) && (llp != 0))
 661                   {
 662                     xrect = new XRectangle[llp + 1];
 663                     draw_count = llp + 1;
 664
 665                     xrect[draw_count - llp - 1].x = event -> xexpose.x;
 666                     xrect[draw_count - llp - 1].y = event -> xexpose.y;
 667                     xrect[draw_count - llp - 1].width = event -> xexpose.width;
 668                     xrect[draw_count - llp - 1].height = event -> xexpose.height;
 669                   }
 670
 671                if ((last_count != 0) && (llp != 0))
 672                   {
 673                     xrect[draw_count - llp - 1].x = event -> xexpose.x;
 674                     xrect[draw_count - llp - 1].y = event -> xexpose.y;
 675                     xrect[draw_count - llp - 1].width = event -> xexpose.width;
 676                     xrect[draw_count - llp - 1].height = event -> xexpose.height;
 677                   }
 678
 679                if ((last_count != 0) && (llp == 0))
 680                   {
 681                     xrect[draw_count - llp - 1].x = event -> xexpose.x;
 682                     xrect[draw_count - llp - 1].y = event -> xexpose.y;
 683                     xrect[draw_count - llp - 1].width = event -> xexpose.width;
 684                     xrect[draw_count - llp - 1].height = event -> xexpose.height;
 685
 686                     XSetClipRectangles(display,gc,0,0,xrect,draw_count,Unsorted);
 687 //                    panel->DoPaint(xrect,draw_count);
 688                     panel->GetEventHandler()->OnPaint();
 689
 690                     delete xrect;
 691                   }
 692                last_count = event -> xexpose.count;
 693                */
 694                break;
 695           default :
 696                cout << "\n\nNew Event ! is = " << event -> type << "\n";
 697                break;
 698         }
 699    }
 700
 701 static void wxDialogBoxEventHandler (Widget    wid,
 702                               XtPointer WXUNUSED(client_data),
 703                               XEvent*   event,
 704                               Boolean *continueToDispatch)
 705 {
 706   wxDialog *dialog = (wxDialog *)wxWidgetHashTable->Get((long)wid);
 707   if (dialog)
 708   {
 709     wxMouseEvent wxevent(wxEVT_NULL);
 710     if (wxTranslateMouseEvent(wxevent, dialog, wid, event))
 711     {
 712         wxevent.SetEventObject(dialog);
 713         wxevent.SetId(dialog->GetId());
 714         dialog->GetEventHandler()->ProcessEvent(wxevent);
 715     }
 716     else
 717     {
 718       // An attempt to implement OnCharHook by calling OnCharHook first;
 719       // if this returns TRUE, set continueToDispatch to False
 720       // (don't continue processing).
 721       // Otherwise set it to True and call OnChar.
 722       wxKeyEvent keyEvent(wxEVENT_TYPE_CHAR);
 723       if (wxTranslateKeyEvent(keyEvent, dialog, wid, event))
 724       {
 725         keyEvent.SetEventObject(dialog);
 726         keyEvent.SetId(dialog->GetId());
 727         keyEvent.SetEventType(wxEVT_CHAR_HOOK);
 728         if (dialog->GetEventHandler()->ProcessEvent(keyEvent))
 729         {
 730             *continueToDispatch = False;
 731             return;
 732         }
 733         else
 734         {
 735             keyEvent.SetEventType(wxEVT_CHAR);
 736             dialog->GetEventHandler()->ProcessEvent(keyEvent);
 737         }
 738       }
 739     }
 740   }
 741   *continueToDispatch = True;
 742 }
 743
 744 static void wxUnmapBulletinBoard(Widget WXUNUSED(dialog), wxDialog *WXUNUSED(client), XtPointer WXUNUSED(call) )
 745 {
 746   /* This gets called when the dialog is being shown, which
 747    * defeats modal showing.
 748   client->m_modalShowing = FALSE ;
 749   client->m_isShown = FALSE;
 750   */
 751 }
 752
 753 void wxDialog::ChangeFont(bool WXUNUSED(keepOriginalSize))
 754 {
 755     // TODO
 756 }
 757
 758 void wxDialog::ChangeBackgroundColour()
 759 {
 760     // TODO
 761 }
 762
 763 void wxDialog::ChangeForegroundColour()
 764 {
 765     // TODO
 766 }
 767