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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: app.cpp
3 // Purpose: wxApp
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 "app.h"
14 #endif
15
16 #include "wx/frame.h"
17 #include "wx/app.h"
18 #include "wx/utils.h"
19 #include "wx/gdicmn.h"
20 #include "wx/icon.h"
21 #include "wx/dialog.h"
22 #include "wx/log.h"
23 #include "wx/module.h"
24 #include "wx/memory.h"
25 #include "wx/log.h"
26 #include "wx/intl.h"
27 #include "wx/evtloop.h"
28
29 #include "wx/univ/theme.h"
30 #include "wx/univ/renderer.h"
31
32 #if wxUSE_THREADS
33 #include "wx/thread.h"
34 #endif
35
36 #if wxUSE_WX_RESOURCES
37 #include "wx/resource.h"
38 #endif
39
40 #ifdef __VMS__
41 #pragma message disable nosimpint
42 #endif
43 #include <X11/Xlib.h>
44 #include <X11/Xutil.h>
45 #include <X11/Xatom.h>
46
47 #ifdef __VMS__
48 #pragma message enable nosimpint
49 #endif
50
51 #include "wx/x11/private.h"
52
53 #include <string.h>
54
55 extern wxList wxPendingDelete;
56
57 wxApp *wxTheApp = NULL;
58
59 wxHashTable *wxWidgetHashTable = NULL;
60
61 IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
62
63 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
64 EVT_IDLE(wxApp::OnIdle)
65 END_EVENT_TABLE()
66
67 #ifdef __WXDEBUG__
68 typedef int (*XErrorHandlerFunc)(Display *, XErrorEvent *);
69
70 XErrorHandlerFunc gs_pfnXErrorHandler = 0;
71
72 static int wxXErrorHandler(Display *dpy, XErrorEvent *xevent)
73 {
74 // just forward to the default handler for now
75 if (gs_pfnXErrorHandler)
76 return gs_pfnXErrorHandler(dpy, xevent);
77 else
78 return 0;
79 }
80 #endif // __WXDEBUG__
81
82 long wxApp::sm_lastMessageTime = 0;
83 WXDisplay *wxApp::ms_display = NULL;
84
85 // This is set within wxEntryStart -- too early on
86 // to put these in wxTheApp
87 static int g_newArgc = 0;
88 static wxChar** g_newArgv = NULL;
89 static bool g_showIconic = FALSE;
90 static wxSize g_initialSize = wxDefaultSize;
91
92 bool wxApp::Initialize()
93 {
94 wxClassInfo::InitializeClasses();
95
96 // GL: I'm annoyed ... I don't know where to put this and I don't want to
97 // create a module for that as it's part of the core.
98 #if wxUSE_THREADS
99 wxPendingEventsLocker = new wxCriticalSection();
100 #endif
101
102 wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
103 wxTheColourDatabase->Initialize();
104
105 wxInitializeStockLists();
106 wxInitializeStockObjects();
107
108 #if wxUSE_WX_RESOURCES
109 wxInitializeResourceSystem();
110 #endif
111
112 wxWidgetHashTable = new wxHashTable(wxKEY_INTEGER);
113
114 wxModule::RegisterModules();
115 if (!wxModule::InitializeModules()) return FALSE;
116
117 return TRUE;
118 }
119
120 void wxApp::CleanUp()
121 {
122 if (g_newArgv)
123 delete[] g_newArgv;
124 g_newArgv = NULL;
125
126 delete wxWidgetHashTable;
127 wxWidgetHashTable = NULL;
128
129 wxModule::CleanUpModules();
130
131 #if wxUSE_WX_RESOURCES
132 wxCleanUpResourceSystem();
133 #endif
134
135 delete wxTheColourDatabase;
136 wxTheColourDatabase = NULL;
137
138 wxDeleteStockObjects();
139
140 wxDeleteStockLists();
141
142 delete wxTheApp;
143 wxTheApp = NULL;
144
145 wxClassInfo::CleanUpClasses();
146
147 #if wxUSE_THREADS
148 delete wxPendingEvents;
149 delete wxPendingEventsLocker;
150 #endif
151
152 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
153 // At this point we want to check if there are any memory
154 // blocks that aren't part of the wxDebugContext itself,
155 // as a special case. Then when dumping we need to ignore
156 // wxDebugContext, too.
157 if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
158 {
159 wxLogDebug("There were memory leaks.");
160 wxDebugContext::Dump();
161 wxDebugContext::PrintStatistics();
162 }
163 #endif
164
165 // do it as the very last thing because everything else can log messages
166 wxLog::DontCreateOnDemand();
167 // do it as the very last thing because everything else can log messages
168 delete wxLog::SetActiveTarget(NULL);
169 }
170
171 // NB: argc and argv may be changed here, pass by reference!
172 int wxEntryStart( int& argc, char *argv[] )
173 {
174 #ifdef __WXDEBUG__
175 // install the X error handler
176 gs_pfnXErrorHandler = XSetErrorHandler( wxXErrorHandler );
177 #endif // __WXDEBUG__
178
179 wxString displayName;
180 bool syncDisplay = FALSE;
181
182 // Parse the arguments.
183 // We can't use wxCmdLineParser or OnInitCmdLine and friends because
184 // we have to create the Display earlier. If we can find a way to
185 // use the wxAppBase API then I'll be quite happy to change it.
186 g_newArgv = new wxChar*[argc];
187 g_newArgc = 0;
188 int i;
189 for (i = 0; i < argc; i++)
190 {
191 wxString arg(argv[i]);
192 if (arg == wxT("-display"))
193 {
194 if (i < (argc - 1))
195 {
196 i ++;
197 displayName = argv[i];
198 continue;
199 }
200 }
201 else if (arg == wxT("-geometry"))
202 {
203 if (i < (argc - 1))
204 {
205 i ++;
206 wxString windowGeometry = argv[i];
207 int w, h;
208 if (wxSscanf(windowGeometry.c_str(), _T("%dx%d"), &w, &h) != 2)
209 {
210 wxLogError(_("Invalid geometry specification '%s'"), windowGeometry.c_str());
211 }
212 else
213 {
214 g_initialSize = wxSize(w, h);
215 }
216 continue;
217 }
218 }
219 else if (arg == wxT("-sync"))
220 {
221 syncDisplay = TRUE;
222 continue;
223 }
224 else if (arg == wxT("-iconic"))
225 {
226 g_showIconic = TRUE;
227
228 continue;
229 }
230
231 // Not eaten by wxWindows, so pass through
232 g_newArgv[g_newArgc] = argv[i];
233 g_newArgc ++;
234 }
235
236 Display* xdisplay = NULL;
237 if (displayName.IsEmpty())
238 xdisplay = XOpenDisplay(NULL);
239 else
240 xdisplay = XOpenDisplay(displayName.c_str());
241
242 if (!xdisplay)
243 {
244 wxLogError( _("wxWindows could not open display. Exiting.") );
245 return -1;
246 }
247
248 if (syncDisplay)
249 {
250 XSynchronize(xdisplay, True);
251 }
252
253 wxApp::ms_display = (WXDisplay*) xdisplay;
254
255 XSelectInput( xdisplay, XDefaultRootWindow(xdisplay), PropertyChangeMask);
256
257 wxSetDetectableAutoRepeat( TRUE );
258
259 if (!wxApp::Initialize())
260 return -1;
261
262 return 0;
263 }
264
265 int wxEntryInitGui()
266 {
267 int retValue = 0;
268
269 if ( !wxTheApp->OnInitGui() )
270 retValue = -1;
271
272 return retValue;
273 }
274
275
276 int wxEntry( int argc, char *argv[] )
277 {
278 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
279 // This seems to be necessary since there are 'rogue'
280 // objects present at this point (perhaps global objects?)
281 // Setting a checkpoint will ignore them as far as the
282 // memory checking facility is concerned.
283 // Of course you may argue that memory allocated in globals should be
284 // checked, but this is a reasonable compromise.
285 wxDebugContext::SetCheckpoint();
286 #endif
287 int err = wxEntryStart(argc, argv);
288 if (err)
289 return err;
290
291 if (!wxTheApp)
292 {
293 if (!wxApp::GetInitializerFunction())
294 {
295 printf( "wxWindows error: No initializer - use IMPLEMENT_APP macro.\n" );
296 return 0;
297 };
298
299 wxTheApp = (wxApp*) (* wxApp::GetInitializerFunction()) ();
300 };
301
302 if (!wxTheApp)
303 {
304 printf( "wxWindows error: wxTheApp == NULL\n" );
305 return 0;
306 };
307
308 wxTheApp->SetClassName(wxFileNameFromPath(argv[0]));
309 wxTheApp->SetAppName(wxFileNameFromPath(argv[0]));
310
311 // The command line may have been changed
312 // by stripping out -display etc.
313 if (g_newArgc > 0)
314 {
315 wxTheApp->argc = g_newArgc;
316 wxTheApp->argv = g_newArgv;
317 }
318 else
319 {
320 wxTheApp->argc = argc;
321 wxTheApp->argv = argv;
322 }
323 wxTheApp->m_showIconic = g_showIconic;
324 wxTheApp->m_initialSize = g_initialSize;
325
326 int retValue;
327 retValue = wxEntryInitGui();
328
329 // Here frames insert themselves automatically into wxTopLevelWindows by
330 // getting created in OnInit().
331 if ( retValue == 0 )
332 {
333 if ( !wxTheApp->OnInit() )
334 retValue = -1;
335 }
336
337 if ( retValue == 0 )
338 {
339 if (wxTheApp->Initialized()) retValue = wxTheApp->OnRun();
340 }
341
342 // flush the logged messages if any
343 wxLog *pLog = wxLog::GetActiveTarget();
344 if ( pLog != NULL && pLog->HasPendingMessages() )
345 pLog->Flush();
346
347 delete wxLog::SetActiveTarget(new wxLogStderr); // So dialog boxes aren't used
348 // for further messages
349
350 if (wxTheApp->GetTopWindow())
351 {
352 delete wxTheApp->GetTopWindow();
353 wxTheApp->SetTopWindow(NULL);
354 }
355
356 wxTheApp->DeletePendingObjects();
357
358 wxTheApp->OnExit();
359
360 wxApp::CleanUp();
361
362 return retValue;
363 };
364
365 // Static member initialization
366 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
367
368 wxApp::wxApp()
369 {
370 m_topWindow = NULL;
371 wxTheApp = this;
372 m_className = "";
373 m_wantDebugOutput = TRUE ;
374 m_appName = "";
375 argc = 0;
376 argv = NULL;
377 m_exitOnFrameDelete = TRUE;
378 m_mainColormap = (WXColormap) NULL;
379 m_topLevelWidget = (WXWindow) NULL;
380 m_maxRequestSize = 0;
381 m_mainLoop = NULL;
382 m_showIconic = FALSE;
383 m_initialSize = wxDefaultSize;
384 }
385
386 bool wxApp::Initialized()
387 {
388 if (GetTopWindow())
389 return TRUE;
390 else
391 return FALSE;
392 }
393
394 int wxApp::MainLoop()
395 {
396 int rt;
397 m_mainLoop = new wxEventLoop;
398
399 rt = m_mainLoop->Run();
400
401 delete m_mainLoop;
402 m_mainLoop = NULL;
403 return rt;
404 }
405
406 // Processes an X event.
407 void wxApp::ProcessXEvent(WXEvent* _event)
408 {
409 XEvent* event = (XEvent*) _event;
410
411 wxWindow* win = NULL;
412 Window window = XEventGetWindow(event);
413 Window actualWindow = window;
414
415 // Find the first wxWindow that corresponds to this event window
416 // Because we're receiving events after a window
417 // has been destroyed, assume a 1:1 match between
418 // Window and wxWindow, so if it's not in the table,
419 // it must have been destroyed.
420
421 win = wxGetWindowFromTable(window);
422 if (!win)
423 return;
424
425 switch (event->type)
426 {
427 case KeyPress:
428 {
429 if (win && !win->IsEnabled())
430 return;
431
432 {
433 if (win)
434 {
435 wxKeyEvent keyEvent(wxEVT_KEY_DOWN);
436 wxTranslateKeyEvent(keyEvent, win, window, event);
437
438 wxLogDebug( "OnKey from %s", win->GetName().c_str() );
439
440 // We didn't process wxEVT_KEY_DOWN, so send
441 // wxEVT_CHAR
442 if (!win->GetEventHandler()->ProcessEvent( keyEvent ))
443 {
444 keyEvent.SetEventType(wxEVT_CHAR);
445 win->GetEventHandler()->ProcessEvent( keyEvent );
446 }
447
448 // We intercepted and processed the key down event
449 return;
450 }
451 }
452 return;
453 }
454 case KeyRelease:
455 {
456 if (win && !win->IsEnabled())
457 return;
458
459 if (win)
460 {
461 wxKeyEvent keyEvent(wxEVT_KEY_UP);
462 wxTranslateKeyEvent(keyEvent, win, window, event);
463
464 win->GetEventHandler()->ProcessEvent( keyEvent );
465 }
466 return;
467 }
468 case ConfigureNotify:
469 {
470 if (win
471 #if wxUSE_NANOX
472 && (event->update.utype == GR_UPDATE_SIZE)
473 #endif
474 )
475 {
476 wxSizeEvent sizeEvent( wxSize(XConfigureEventGetWidth(event), XConfigureEventGetHeight(event)), win->GetId() );
477 sizeEvent.SetEventObject( win );
478
479 win->GetEventHandler()->ProcessEvent( sizeEvent );
480 }
481 }
482 #if !wxUSE_NANOX
483 case PropertyNotify:
484 {
485 HandlePropertyChange(_event);
486 return;
487 }
488 case ClientMessage:
489 {
490 if (win && !win->IsEnabled())
491 return;
492
493 Atom wm_delete_window = XInternAtom(wxGlobalDisplay(), "WM_DELETE_WINDOW", True);
494 Atom wm_protocols = XInternAtom(wxGlobalDisplay(), "WM_PROTOCOLS", True);
495
496 if (event->xclient.message_type == wm_protocols)
497 {
498 if ((Atom) (event->xclient.data.l[0]) == wm_delete_window)
499 {
500 if (win)
501 {
502 win->Close(FALSE);
503 }
504 }
505 }
506 return;
507 }
508 case ResizeRequest:
509 {
510 /*
511 * If resize event, don't resize until the last resize event for this
512 * window is recieved. Prevents flicker as windows are resized.
513 */
514
515 Display *disp = (Display*) wxGetDisplay();
516 XEvent report;
517
518 // to avoid flicker
519 report = * event;
520 while( XCheckTypedWindowEvent (disp, actualWindow, ResizeRequest, &report));
521
522 if (win)
523 {
524 wxSize sz = win->GetSize();
525 wxSizeEvent sizeEvent(sz, win->GetId());
526 sizeEvent.SetEventObject(win);
527
528 win->GetEventHandler()->ProcessEvent( sizeEvent );
529 }
530
531 return;
532 }
533 #endif
534 #if wxUSE_NANOX
535 case GR_EVENT_TYPE_CLOSE_REQ:
536 {
537 if (win)
538 {
539 win->Close(FALSE);
540 }
541 break;
542 }
543 #endif
544 case Expose:
545 {
546 if (win)
547 {
548 win->GetUpdateRegion().Union( XExposeEventGetX(event), XExposeEventGetY(event),
549 XExposeEventGetWidth(event), XExposeEventGetHeight(event));
550
551 win->GetClearRegion().Union( XExposeEventGetX(event), XExposeEventGetY(event),
552 XExposeEventGetWidth(event), XExposeEventGetHeight(event));
553
554 #if !wxUSE_NANOX
555 if (event->xexpose.count == 0)
556 #endif
557 {
558 // Only erase background, paint in idle time.
559 win->SendEraseEvents();
560 }
561 }
562
563 return;
564 }
565 #if !wxUSE_NANOX
566 case GraphicsExpose:
567 {
568 if (win)
569 {
570 // wxLogDebug( "GraphicsExpose from %s", win->GetName().c_str(),
571 // event->xgraphicsexpose.x, event->xgraphicsexpose.y,
572 // event->xgraphicsexpose.width, event->xgraphicsexpose.height);
573
574 win->GetUpdateRegion().Union( event->xgraphicsexpose.x, event->xgraphicsexpose.y,
575 event->xgraphicsexpose.width, event->xgraphicsexpose.height);
576
577 win->GetClearRegion().Union( event->xgraphicsexpose.x, event->xgraphicsexpose.y,
578 event->xgraphicsexpose.width, event->xgraphicsexpose.height);
579
580 if (event->xgraphicsexpose.count == 0)
581 {
582 // Only erase background, paint in idle time.
583 win->SendEraseEvents();
584 }
585 }
586
587 return;
588 }
589 #endif
590 case EnterNotify:
591 case LeaveNotify:
592 case ButtonPress:
593 case ButtonRelease:
594 case MotionNotify:
595 {
596 if (!win)
597 return;
598
599 if (!win->IsEnabled())
600 return;
601
602 #if 1
603 if (event->type == ButtonPress)
604 {
605 if ((win != wxWindow::FindFocus()) && win->AcceptsFocus())
606 win->SetFocus();
607 }
608 #endif
609
610 wxMouseEvent wxevent;
611 wxTranslateMouseEvent(wxevent, win, window, event);
612 win->GetEventHandler()->ProcessEvent( wxevent );
613 return;
614 }
615 case FocusIn:
616 {
617 #if !wxUSE_NANOX
618 if (win && event->xfocus.detail != NotifyPointer)
619 #endif
620 {
621 wxLogDebug( "FocusIn from %s", win->GetName().c_str() );
622
623 wxFocusEvent focusEvent(wxEVT_SET_FOCUS, win->GetId());
624 focusEvent.SetEventObject(win);
625 win->GetEventHandler()->ProcessEvent(focusEvent);
626 }
627 break;
628 }
629 case FocusOut:
630 {
631 #if !wxUSE_NANOX
632 if (win && event->xfocus.detail != NotifyPointer)
633 #endif
634 {
635 wxLogDebug( "FocusOut from %s", win->GetName().c_str() );
636
637 wxFocusEvent focusEvent(wxEVT_KILL_FOCUS, win->GetId());
638 focusEvent.SetEventObject(win);
639 win->GetEventHandler()->ProcessEvent(focusEvent);
640 }
641 break;
642 }
643 #ifndef wxUSE_NANOX
644 case DestroyNotify:
645 {
646 // Do we want to process this (for top-level windows)?
647 // But we want to be able to veto closes, anyway
648 break;
649 }
650 #endif
651 default:
652 {
653 #ifdef __WXDEBUG__
654 //wxString eventName = wxGetXEventName(XEvent& event);
655 //wxLogDebug(wxT("Event %s not handled"), eventName.c_str());
656 #endif
657 break;
658 }
659 }
660 }
661
662 // Returns TRUE if more time is needed.
663 // Note that this duplicates wxEventLoopImpl::SendIdleEvent
664 // but ProcessIdle may be needed by apps, so is kept.
665 bool wxApp::ProcessIdle()
666 {
667 wxIdleEvent event;
668 event.SetEventObject(this);
669 ProcessEvent(event);
670
671 return event.MoreRequested();
672 }
673
674 void wxApp::ExitMainLoop()
675 {
676 if (m_mainLoop)
677 m_mainLoop->Exit(0);
678 }
679
680 // Is a message/event pending?
681 bool wxApp::Pending()
682 {
683 return wxEventLoop::GetActive()->Pending();
684 }
685
686 // Dispatch a message.
687 void wxApp::Dispatch()
688 {
689 wxEventLoop::GetActive()->Dispatch();
690 }
691
692 // This should be redefined in a derived class for
693 // handling property change events for XAtom IPC.
694 void wxApp::HandlePropertyChange(WXEvent *event)
695 {
696 // by default do nothing special
697 // TODO: what to do for X11
698 // XtDispatchEvent((XEvent*) event);
699 }
700
701 void wxApp::OnIdle(wxIdleEvent& event)
702 {
703 static bool s_inOnIdle = FALSE;
704
705 // Avoid recursion (via ProcessEvent default case)
706 if (s_inOnIdle)
707 return;
708
709 s_inOnIdle = TRUE;
710
711 // Resend in the main thread events which have been prepared in other
712 // threads
713 ProcessPendingEvents();
714
715 // 'Garbage' collection of windows deleted with Close()
716 DeletePendingObjects();
717
718 // Send OnIdle events to all windows
719 bool needMore = SendIdleEvents();
720
721 if (needMore)
722 event.RequestMore(TRUE);
723
724 s_inOnIdle = FALSE;
725 }
726
727 void wxWakeUpIdle()
728 {
729 // **** please implement me! ****
730 // Wake up the idle handler processor, even if it is in another thread...
731 }
732
733
734 // Send idle event to all top-level windows
735 bool wxApp::SendIdleEvents()
736 {
737 bool needMore = FALSE;
738
739 wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
740 while (node)
741 {
742 wxWindow* win = node->GetData();
743 if (SendIdleEvents(win))
744 needMore = TRUE;
745 node = node->GetNext();
746 }
747
748 return needMore;
749 }
750
751 // Send idle event to window and all subwindows
752 bool wxApp::SendIdleEvents(wxWindow* win)
753 {
754 bool needMore = FALSE;
755
756 wxIdleEvent event;
757 event.SetEventObject(win);
758
759 win->GetEventHandler()->ProcessEvent(event);
760
761 win->OnInternalIdle();
762
763 if (event.MoreRequested())
764 needMore = TRUE;
765
766 wxNode* node = win->GetChildren().First();
767 while (node)
768 {
769 wxWindow* win = (wxWindow*) node->Data();
770 if (SendIdleEvents(win))
771 needMore = TRUE;
772
773 node = node->Next();
774 }
775
776 return needMore;
777 }
778
779 void wxApp::DeletePendingObjects()
780 {
781 wxNode *node = wxPendingDelete.First();
782 while (node)
783 {
784 wxObject *obj = (wxObject *)node->Data();
785
786 delete obj;
787
788 if (wxPendingDelete.Member(obj))
789 delete node;
790
791 // Deleting one object may have deleted other pending
792 // objects, so start from beginning of list again.
793 node = wxPendingDelete.First();
794 }
795 }
796
797 // Create display, and other initialization
798 bool wxApp::OnInitGui()
799 {
800 // Eventually this line will be removed, but for
801 // now we don't want to try popping up a dialog
802 // for error messages.
803 delete wxLog::SetActiveTarget(new wxLogStderr);
804
805 if (!wxAppBase::OnInitGui())
806 return FALSE;
807
808 GetMainColormap( wxApp::GetDisplay() );
809
810 m_maxRequestSize = XMaxRequestSize( (Display*) wxApp::GetDisplay() );
811
812 return TRUE;
813 }
814
815 WXColormap wxApp::GetMainColormap(WXDisplay* display)
816 {
817 if (!display) /* Must be called first with non-NULL display */
818 return m_mainColormap;
819
820 int defaultScreen = DefaultScreen((Display*) display);
821 Screen* screen = XScreenOfDisplay((Display*) display, defaultScreen);
822
823 Colormap c = DefaultColormapOfScreen(screen);
824
825 if (!m_mainColormap)
826 m_mainColormap = (WXColormap) c;
827
828 return (WXColormap) c;
829 }
830
831 Window wxGetWindowParent(Window window)
832 {
833 wxASSERT_MSG( window, "invalid window" );
834
835 return (Window) 0;
836
837 Window parent, root = 0;
838 #if wxUSE_NANOX
839 int noChildren = 0;
840 #else
841 unsigned int noChildren = 0;
842 #endif
843 Window* children = NULL;
844
845 // #define XQueryTree(d,w,r,p,c,nc) GrQueryTree(w,p,c,nc)
846 int res = 1;
847 #if !wxUSE_NANOX
848 res =
849 #endif
850 XQueryTree((Display*) wxGetDisplay(), window, & root, & parent,
851 & children, & noChildren);
852 if (children)
853 XFree(children);
854 if (res)
855 return parent;
856 else
857 return (Window) 0;
858 }
859
860 void wxExit()
861 {
862 int retValue = 0;
863 if (wxTheApp)
864 retValue = wxTheApp->OnExit();
865
866 wxApp::CleanUp();
867 /*
868 * Exit in some platform-specific way. Not recommended that the app calls this:
869 * only for emergencies.
870 */
871 exit(retValue);
872 }
873
874 // Yield to other processes
875
876 bool wxApp::Yield(bool onlyIfNeeded)
877 {
878 bool s_inYield = FALSE;
879
880 if ( s_inYield )
881 {
882 if ( !onlyIfNeeded )
883 {
884 wxFAIL_MSG( wxT("wxYield called recursively" ) );
885 }
886
887 return FALSE;
888 }
889
890 s_inYield = TRUE;
891
892 while (wxTheApp && wxTheApp->Pending())
893 wxTheApp->Dispatch();
894
895 s_inYield = FALSE;
896
897 return TRUE;
898 }
899
900 wxIcon wxApp::GetStdIcon(int which) const
901 {
902 return wxTheme::Get()->GetRenderer()->GetStdIcon(which);
903 }
904
905 void wxApp::OnAssert(const wxChar *file, int line, const wxChar *msg)
906 {
907 // While the GUI isn't working that well, just print out the
908 // message.
909 #if 0
910 wxAppBase::OnAssert(file, line, msg);
911 #else
912 wxString msg2;
913 msg2.Printf("At file %s:%d: %s", file, line, msg);
914 wxLogDebug(msg2);
915 #endif
916 }
917