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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: app.cpp
3 // Purpose: wxApp
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 04/01/98
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart and Markus Holzem
9 // Licence: wxWindows license
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ===========================================================================
13 // declarations
14 // ===========================================================================
15
16 // ---------------------------------------------------------------------------
17 // headers
18 // ---------------------------------------------------------------------------
19
20 #ifdef __GNUG__
21 #pragma implementation "app.h"
22 #endif
23
24 // For compilers that support precompilation, includes "wx.h".
25 #include "wx/wxprec.h"
26
27 #if defined(__BORLANDC__)
28 #pragma hdrstop
29 #endif
30
31 #ifndef WX_PRECOMP
32 #include "wx/frame.h"
33 #include "wx/app.h"
34 #include "wx/utils.h"
35 #include "wx/gdicmn.h"
36 #include "wx/pen.h"
37 #include "wx/brush.h"
38 #include "wx/cursor.h"
39 #include "wx/icon.h"
40 #include "wx/palette.h"
41 #include "wx/dc.h"
42 #include "wx/dialog.h"
43 #include "wx/msgdlg.h"
44 #include "wx/intl.h"
45 #include "wx/dynarray.h"
46 #include "wx/wxchar.h"
47 #include "wx/icon.h"
48 #endif
49
50 #include "wx/log.h"
51 #include "wx/module.h"
52
53 #include "wx/msw/private.h"
54
55 #if wxUSE_THREADS
56 #include "wx/thread.h"
57
58 // define the array of MSG strutures
59 WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
60
61 #include "wx/arrimpl.cpp"
62
63 WX_DEFINE_OBJARRAY(wxMsgArray);
64 #endif // wxUSE_THREADS
65
66 #if wxUSE_WX_RESOURCES
67 #include "wx/resource.h"
68 #endif
69
70 #if wxUSE_TOOLTIPS
71 #include "wx/tooltip.h"
72 #endif // wxUSE_TOOLTIPS
73
74 // OLE is used for drag-and-drop, clipboard, OLE Automation..., but some
75 // compilers don't support it (missing headers, libs, ...)
76 #if defined(__GNUWIN32_OLD__) || defined(__SC__) || defined(__SALFORDC__)
77 #undef wxUSE_OLE
78
79 #define wxUSE_OLE 0
80 #endif // broken compilers
81
82 #if wxUSE_OLE
83 #include <ole2.h>
84 #endif
85
86 #include <string.h>
87 #include <ctype.h>
88
89 #if defined(__WIN95__) && !(defined(__GNUWIN32_OLD__) || defined(__TWIN32__))
90 #include <commctrl.h>
91 #endif
92
93 #include "wx/msw/msvcrt.h"
94
95 // ----------------------------------------------------------------------------
96 // conditional compilation
97 // ----------------------------------------------------------------------------
98
99 // The macro _WIN32_IE is defined by commctrl.h (unless it had already been
100 // defined before) and shows us what common control features are available
101 // during the compile time (it doesn't mean that they will be available during
102 // the run-time, use GetComCtl32Version() to test for them!). The possible
103 // values are:
104 //
105 // 0x0200 for comctl32.dll 4.00 shipped with Win95/NT 4.0
106 // 0x0300 4.70 IE 3.x
107 // 0x0400 4.71 IE 4.0
108 // 0x0401 4.72 IE 4.01 and Win98
109 // 0x0500 5.00 IE 5.x and NT 5.0 (Win2000)
110
111 #ifndef _WIN32_IE
112 // minimal set of features by default
113 #define _WIN32_IE 0x0200
114 #endif
115
116 #if _WIN32_IE >= 0x0300
117 #include <shlwapi.h>
118 #endif
119
120 // ---------------------------------------------------------------------------
121 // global variables
122 // ---------------------------------------------------------------------------
123
124 extern wxChar *wxBuffer;
125 extern wxList *wxWinHandleList;
126 extern wxList WXDLLEXPORT wxPendingDelete;
127 extern void wxSetKeyboardHook(bool doIt);
128
129 MSG s_currentMsg;
130 wxApp *wxTheApp = NULL;
131
132 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
133 // with NR suffix - wxWindow::MSWCreate() supposes this
134 const wxChar *wxFrameClassName = wxT("wxFrameClass");
135 const wxChar *wxFrameClassNameNoRedraw = wxT("wxFrameClassNR");
136 const wxChar *wxMDIFrameClassName = wxT("wxMDIFrameClass");
137 const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR");
138 const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass");
139 const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR");
140 const wxChar *wxPanelClassName = wxT("wxPanelClass");
141 const wxChar *wxPanelClassNameNR = wxT("wxPanelClassNR");
142 const wxChar *wxCanvasClassName = wxT("wxCanvasClass");
143 const wxChar *wxCanvasClassNameNR = wxT("wxCanvasClassNR");
144
145 HICON wxSTD_FRAME_ICON = (HICON) NULL;
146 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
147 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
148
149 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
150 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
151 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
152
153 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
154
155 LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
156
157 // FIXME wxUSE_ON_FATAL_EXCEPTION is only supported for VC++ now because it
158 // needs compiler support for Win32 SEH. Others (especially Borland)
159 // probably have it too, but I'm not sure about how it works
160 // JACS: get 'Cannot use __try in functions that require unwinding
161 // in Unicode mode, so disabling.
162 #if !defined(__VISUALC__) || defined(__WIN16__) || defined(UNICODE)
163 #undef wxUSE_ON_FATAL_EXCEPTION
164 #define wxUSE_ON_FATAL_EXCEPTION 0
165 #endif // VC++
166
167 #if wxUSE_ON_FATAL_EXCEPTION
168 static bool gs_handleExceptions = FALSE;
169 #endif
170
171 // ===========================================================================
172 // implementation
173 // ===========================================================================
174
175 // ---------------------------------------------------------------------------
176 // wxApp
177 // ---------------------------------------------------------------------------
178
179 IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
180
181 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
182 EVT_IDLE(wxApp::OnIdle)
183 EVT_END_SESSION(wxApp::OnEndSession)
184 EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
185 END_EVENT_TABLE()
186
187 //// Initialize
188 bool wxApp::Initialize()
189 {
190 // the first thing to do is to check if we're trying to run an Unicode
191 // program under Win9x - if so, abort right now as it has no chance to
192 // work
193 #if wxUSE_UNICODE
194 if ( wxGetOsVersion() != wxWINDOWS_NT )
195 {
196 // note that we can use MessageBoxW() as it's implemented even under
197 // Win9x - OTOH, we can't use wxGetTranslation() because the file APIs
198 // used by wxLocale are not
199 ::MessageBox
200 (
201 NULL,
202 _T("This program uses Unicode and requires Windows NT/2000.\nProgram aborted."),
203 _T("wxWindows Fatal Error"),
204 MB_ICONERROR | MB_OK
205 );
206
207 return FALSE;
208 }
209 #endif // wxUSE_UNICODE
210
211 // Some people may wish to use this, but
212 // probably it shouldn't be here by default.
213 #ifdef __WXDEBUG__
214 // wxRedirectIOToConsole();
215 #endif
216
217 wxBuffer = new wxChar[1500]; // FIXME
218
219 wxClassInfo::InitializeClasses();
220
221 #if wxUSE_THREADS
222 wxPendingEventsLocker = new wxCriticalSection;
223 #endif
224
225 wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
226 wxTheColourDatabase->Initialize();
227
228 wxInitializeStockLists();
229 wxInitializeStockObjects();
230
231 #if wxUSE_WX_RESOURCES
232 wxInitializeResourceSystem();
233 #endif
234
235 wxBitmap::InitStandardHandlers();
236
237 #if defined(__WIN95__)
238 InitCommonControls();
239
240 #endif // __WIN95__
241
242 #if wxUSE_OLE
243
244 #ifdef __WIN16__
245 // for OLE, enlarge message queue to be as large as possible
246 int iMsg = 96;
247 while (!SetMessageQueue(iMsg) && (iMsg -= 8))
248 ;
249 #endif // Win16
250 // we need to initialize OLE library
251 if ( FAILED(::OleInitialize(NULL)) )
252 wxLogError(_("Cannot initialize OLE"));
253 #endif // wxUSE_OLE
254
255 #if wxUSE_CTL3D
256 if (!Ctl3dRegister(wxhInstance))
257 wxLogError(wxT("Cannot register CTL3D"));
258
259 Ctl3dAutoSubclass(wxhInstance);
260 #endif
261
262 // VZ: these icons are not in wx.rc anyhow (but should they?)!
263 #if 0
264 wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
265 wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
266 wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
267
268 wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
269 wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
270 wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
271 #endif // 0
272
273 RegisterWindowClasses();
274
275 // Create the brush for disabling bitmap buttons
276
277 LOGBRUSH lb;
278 lb.lbStyle = BS_PATTERN;
279 lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
280 if ( lb.lbHatch )
281 {
282 wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
283 ::DeleteObject( (HGDIOBJ)lb.lbHatch );
284 }
285 //else: wxWindows resources are probably not linked in
286
287 #if wxUSE_PENWINDOWS
288 wxRegisterPenWin();
289 #endif
290
291 wxWinHandleList = new wxList(wxKEY_INTEGER);
292
293 // This is to foil optimizations in Visual C++ that throw out dummy.obj.
294 // PLEASE DO NOT ALTER THIS.
295 #if defined(__VISUALC__) && defined(__WIN16__) && !defined(WXMAKINGDLL)
296 extern char wxDummyChar;
297 if (wxDummyChar) wxDummyChar++;
298 #endif
299
300 wxSetKeyboardHook(TRUE);
301
302 wxModule::RegisterModules();
303 if (!wxModule::InitializeModules())
304 return FALSE;
305 return TRUE;
306 }
307
308 // ---------------------------------------------------------------------------
309 // RegisterWindowClasses
310 // ---------------------------------------------------------------------------
311
312 // TODO we should only register classes really used by the app. For this it
313 // would be enough to just delay the class registration until an attempt
314 // to create a window of this class is made.
315 bool wxApp::RegisterWindowClasses()
316 {
317 WNDCLASS wndclass;
318
319 // for each class we register one with CS_(V|H)REDRAW style and one
320 // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
321 static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
322 static const long styleNoRedraw = CS_DBLCLKS;
323
324 // the fields which are common to all classes
325 wndclass.lpfnWndProc = (WNDPROC)wxWndProc;
326 wndclass.cbClsExtra = 0;
327 wndclass.cbWndExtra = sizeof( DWORD ); // VZ: what is this DWORD used for?
328 wndclass.hInstance = wxhInstance;
329 wndclass.hIcon = (HICON) NULL;
330 wndclass.hCursor = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
331 wndclass.lpszMenuName = NULL;
332
333 // Register the frame window class.
334 wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
335 wndclass.lpszClassName = wxFrameClassName;
336 wndclass.style = styleNormal;
337
338 if ( !RegisterClass(&wndclass) )
339 {
340 wxLogLastError(wxT("RegisterClass(frame)"));
341
342 return FALSE;
343 }
344
345 // "no redraw" frame
346 wndclass.lpszClassName = wxFrameClassNameNoRedraw;
347 wndclass.style = styleNoRedraw;
348
349 if ( !RegisterClass(&wndclass) )
350 {
351 wxLogLastError(wxT("RegisterClass(no redraw frame)"));
352
353 return FALSE;
354 }
355
356 // Register the MDI frame window class.
357 wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
358 wndclass.lpszClassName = wxMDIFrameClassName;
359 wndclass.style = styleNormal;
360
361 if ( !RegisterClass(&wndclass) )
362 {
363 wxLogLastError(wxT("RegisterClass(MDI parent)"));
364
365 return FALSE;
366 }
367
368 // "no redraw" MDI frame
369 wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
370 wndclass.style = styleNoRedraw;
371
372 if ( !RegisterClass(&wndclass) )
373 {
374 wxLogLastError(wxT("RegisterClass(no redraw MDI parent frame)"));
375
376 return FALSE;
377 }
378
379 // Register the MDI child frame window class.
380 wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
381 wndclass.lpszClassName = wxMDIChildFrameClassName;
382 wndclass.style = styleNormal;
383
384 if ( !RegisterClass(&wndclass) )
385 {
386 wxLogLastError(wxT("RegisterClass(MDI child)"));
387
388 return FALSE;
389 }
390
391 // "no redraw" MDI child frame
392 wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
393 wndclass.style = styleNoRedraw;
394
395 if ( !RegisterClass(&wndclass) )
396 {
397 wxLogLastError(wxT("RegisterClass(no redraw MDI child)"));
398
399 return FALSE;
400 }
401
402 // Register the panel window class.
403 wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
404 wndclass.lpszClassName = wxPanelClassName;
405 wndclass.style = styleNormal;
406
407 if ( !RegisterClass(&wndclass) )
408 {
409 wxLogLastError(wxT("RegisterClass(panel)"));
410
411 return FALSE;
412 }
413
414 // Register the no redraw panel window class.
415 wndclass.lpszClassName = wxPanelClassNameNR;
416 wndclass.style = styleNoRedraw;
417
418 if ( !RegisterClass(&wndclass) )
419 {
420 wxLogLastError(wxT("RegisterClass(no redraw panel)"));
421
422 return FALSE;
423 }
424
425 // Register the canvas and textsubwindow class name
426 wndclass.hbrBackground = (HBRUSH)NULL;
427 wndclass.lpszClassName = wxCanvasClassName;
428
429 if ( !RegisterClass(&wndclass) )
430 {
431 wxLogLastError(wxT("RegisterClass(canvas)"));
432
433 return FALSE;
434 }
435
436 wndclass.lpszClassName = wxCanvasClassNameNR;
437 wndclass.style = styleNoRedraw;
438 if ( !RegisterClass(&wndclass) )
439 {
440 wxLogLastError(wxT("RegisterClass(no redraw canvas)"));
441
442 return FALSE;
443 }
444
445 return TRUE;
446 }
447
448 // ---------------------------------------------------------------------------
449 // Convert Windows to argc, argv style
450 // ---------------------------------------------------------------------------
451
452 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
453 {
454 wxStringList args;
455
456 wxString cmdLine(lpCmdLine);
457 int count = 0;
458
459 // Get application name
460 wxChar name[260]; // 260 is MAX_PATH value from windef.h
461 ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
462
463 args.Add(name);
464 count++;
465
466 wxStrcpy(name, wxFileNameFromPath(name));
467 wxStripExtension(name);
468 wxTheApp->SetAppName(name);
469
470 // Break up string
471 // Treat strings enclosed in double-quotes as single arguments
472 int i = 0;
473 int len = cmdLine.Length();
474 while (i < len)
475 {
476 // Skip whitespace
477 while ((i < len) && wxIsspace(cmdLine.GetChar(i)))
478 i ++;
479
480 if (i < len)
481 {
482 if (cmdLine.GetChar(i) == wxT('"')) // We found the start of a string
483 {
484 i ++;
485 int first = i;
486 while ((i < len) && (cmdLine.GetChar(i) != wxT('"')))
487 i ++;
488
489 wxString arg(cmdLine.Mid(first, (i - first)));
490
491 args.Add(arg);
492 count ++;
493
494 if (i < len)
495 i ++; // Skip past 2nd quote
496 }
497 else // Unquoted argument
498 {
499 int first = i;
500 while ((i < len) && !wxIsspace(cmdLine.GetChar(i)))
501 i ++;
502
503 wxString arg(cmdLine.Mid(first, (i - first)));
504
505 args.Add(arg);
506 count ++;
507 }
508 }
509 }
510
511 wxTheApp->argv = new wxChar*[count + 1];
512 for (i = 0; i < count; i++)
513 {
514 wxString arg(args[i]);
515 wxTheApp->argv[i] = copystring((const wxChar*)arg);
516 }
517 wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
518 wxTheApp->argc = count;
519 }
520
521 //// Cleans up any wxWindows internal structures left lying around
522
523 void wxApp::CleanUp()
524 {
525 //// COMMON CLEANUP
526
527 #if wxUSE_LOG
528 // flush the logged messages if any and install a 'safer' log target: the
529 // default one (wxLogGui) can't be used after the resources are freed just
530 // below and the user suppliedo ne might be even more unsafe (using any
531 // wxWindows GUI function is unsafe starting from now)
532 wxLog::DontCreateOnDemand();
533
534 // this will flush the old messages if any
535 delete wxLog::SetActiveTarget(new wxLogStderr);
536 #endif // wxUSE_LOG
537
538 // One last chance for pending objects to be cleaned up
539 wxTheApp->DeletePendingObjects();
540
541 wxModule::CleanUpModules();
542
543 #if wxUSE_WX_RESOURCES
544 wxCleanUpResourceSystem();
545
546 // wxDefaultResourceTable->ClearTable();
547 #endif
548
549 wxDeleteStockObjects();
550
551 // Destroy all GDI lists, etc.
552 wxDeleteStockLists();
553
554 delete wxTheColourDatabase;
555 wxTheColourDatabase = NULL;
556
557 wxBitmap::CleanUpHandlers();
558
559 delete[] wxBuffer;
560 wxBuffer = NULL;
561
562 //// WINDOWS-SPECIFIC CLEANUP
563
564 wxSetKeyboardHook(FALSE);
565
566 #if wxUSE_PENWINDOWS
567 wxCleanUpPenWin();
568 #endif
569
570 if (wxSTD_FRAME_ICON)
571 DestroyIcon(wxSTD_FRAME_ICON);
572 if (wxSTD_MDICHILDFRAME_ICON)
573 DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
574 if (wxSTD_MDIPARENTFRAME_ICON)
575 DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
576
577 if (wxDEFAULT_FRAME_ICON)
578 DestroyIcon(wxDEFAULT_FRAME_ICON);
579 if (wxDEFAULT_MDICHILDFRAME_ICON)
580 DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
581 if (wxDEFAULT_MDIPARENTFRAME_ICON)
582 DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
583
584 if ( wxDisableButtonBrush )
585 ::DeleteObject( wxDisableButtonBrush );
586
587 #if wxUSE_OLE
588 ::OleUninitialize();
589 #endif
590
591 #if wxUSE_CTL3D
592 Ctl3dUnregister(wxhInstance);
593 #endif
594
595 if (wxWinHandleList)
596 delete wxWinHandleList;
597
598 // GL: I'm annoyed ... I don't know where to put this and I don't want to
599 // create a module for that as it's part of the core.
600 delete wxPendingEvents;
601 #if wxUSE_THREADS
602 delete wxPendingEventsLocker;
603 // If we don't do the following, we get an apparent memory leak.
604 #if wxUSE_VALIDATORS
605 ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
606 #endif
607 #endif
608
609 wxClassInfo::CleanUpClasses();
610
611 delete wxTheApp;
612 wxTheApp = NULL;
613
614 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
615 // At this point we want to check if there are any memory
616 // blocks that aren't part of the wxDebugContext itself,
617 // as a special case. Then when dumping we need to ignore
618 // wxDebugContext, too.
619 if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
620 {
621 wxLogMessage(wxT("There were memory leaks."));
622 wxDebugContext::Dump();
623 wxDebugContext::PrintStatistics();
624 }
625 // wxDebugContext::SetStream(NULL, NULL);
626 #endif
627
628 #if wxUSE_LOG
629 // do it as the very last thing because everything else can log messages
630 delete wxLog::SetActiveTarget(NULL);
631 #endif // wxUSE_LOG
632 }
633
634 //----------------------------------------------------------------------
635 // Entry point helpers, used by wxPython
636 //----------------------------------------------------------------------
637
638 int WXDLLEXPORT wxEntryStart( int WXUNUSED(argc), char** WXUNUSED(argv) )
639 {
640 return wxApp::Initialize();
641 }
642
643 int WXDLLEXPORT wxEntryInitGui()
644 {
645 wxTheApp->OnInitGui();
646 return 0;
647 }
648
649 void WXDLLEXPORT wxEntryCleanup()
650 {
651 wxApp::CleanUp();
652 }
653
654
655 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
656
657 // temporarily disable this warning which would be generated in release builds
658 // because of __try
659 #ifdef __VISUALC__
660 #pragma warning(disable: 4715) // not all control paths return a value
661 #endif // Visual C++
662
663 //----------------------------------------------------------------------
664 // Main wxWindows entry point
665 //----------------------------------------------------------------------
666 int wxEntry(WXHINSTANCE hInstance,
667 WXHINSTANCE WXUNUSED(hPrevInstance),
668 char *lpCmdLine,
669 int nCmdShow,
670 bool enterLoop)
671 {
672 // do check for memory leaks on program exit
673 // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
674 // deallocated memory which may be used to simulate low-memory condition)
675 wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
676 #ifdef __MWERKS__
677 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
678 // This seems to be necessary since there are 'rogue'
679 // objects present at this point (perhaps global objects?)
680 // Setting a checkpoint will ignore them as far as the
681 // memory checking facility is concerned.
682 // Of course you may argue that memory allocated in globals should be
683 // checked, but this is a reasonable compromise.
684 wxDebugContext::SetCheckpoint();
685 #endif
686 #endif
687
688 // take everything into a try-except block to be able to call
689 // OnFatalException() if necessary
690 #if wxUSE_ON_FATAL_EXCEPTION
691 __try {
692 #endif
693 wxhInstance = (HINSTANCE) hInstance;
694
695 if (!wxEntryStart(0,0))
696 return 0;
697
698 // create the application object or ensure that one already exists
699 if (!wxTheApp)
700 {
701 // The app may have declared a global application object, but we recommend
702 // the IMPLEMENT_APP macro is used instead, which sets an initializer
703 // function for delayed, dynamic app object construction.
704 wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
705 wxT("No initializer - use IMPLEMENT_APP macro.") );
706
707 wxTheApp = (*wxApp::GetInitializerFunction()) ();
708 }
709
710 wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
711
712 // save the WinMain() parameters
713 wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
714 wxTheApp->m_nCmdShow = nCmdShow;
715
716 // GUI-specific initialisation. In fact on Windows we don't have any,
717 // but this call is provided for compatibility across platforms.
718 wxEntryInitGui();
719
720 // We really don't want timestamps by default, because it means
721 // we can't simply double-click on the error message and get to that
722 // line in the source. So VC++ at least, let's have a sensible default.
723 #ifdef __VISUALC__
724 wxLog::SetTimestamp(NULL);
725 #endif
726
727 int retValue = 0;
728
729 // it is common to create a modal dialog in OnInit() (to ask/notify the
730 // user about something) but it wouldn't work if we don't change the
731 // "exit on delete last frame" flag here as when this dialog is
732 // deleted, the app would terminate (it was the last top level window
733 // as the main frame wasn't created yet!), so disable this behaviour
734 // temproarily
735 bool exitOnLastFrameDelete = wxTheApp->GetExitOnFrameDelete();
736 wxTheApp->SetExitOnFrameDelete(FALSE);
737
738 // init the app
739 retValue = wxTheApp->OnInit() ? 0 : -1;
740
741 // restore the old flag value
742 wxTheApp->SetExitOnFrameDelete(exitOnLastFrameDelete);
743
744 if ( retValue == 0 )
745 {
746 if ( enterLoop )
747 {
748 // run the main loop
749 retValue = wxTheApp->OnRun();
750 }
751 else
752 {
753 // we want to initialize, but not run or exit immediately.
754 return 1;
755 }
756 }
757 //else: app initialization failed, so we skipped OnRun()
758
759 wxWindow *topWindow = wxTheApp->GetTopWindow();
760 if ( topWindow )
761 {
762 // Forcibly delete the window.
763 if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
764 topWindow->IsKindOf(CLASSINFO(wxDialog)) )
765 {
766 topWindow->Close(TRUE);
767 wxTheApp->DeletePendingObjects();
768 }
769 else
770 {
771 delete topWindow;
772 wxTheApp->SetTopWindow(NULL);
773 }
774 }
775
776 wxTheApp->OnExit();
777
778 wxEntryCleanup();
779
780 return retValue;
781
782 #if wxUSE_ON_FATAL_EXCEPTION
783 }
784 __except ( gs_handleExceptions ? EXCEPTION_EXECUTE_HANDLER
785 : EXCEPTION_CONTINUE_SEARCH ) {
786 if ( wxTheApp )
787 {
788 // give the user a chance to do something special about this
789 wxTheApp->OnFatalException();
790 }
791
792 ::ExitProcess(3); // the same exit code as abort()
793
794 // NOTREACHED
795 }
796 #endif // wxUSE_ON_FATAL_EXCEPTION
797 }
798
799 // restore warning state
800 #ifdef __VISUALC__
801 #pragma warning(default: 4715) // not all control paths return a value
802 #endif // Visual C++
803
804 #else /* _WINDLL */
805
806 //----------------------------------------------------------------------
807 // Entry point for wxWindows + the App in a DLL
808 //----------------------------------------------------------------------
809
810 int wxEntry(WXHINSTANCE hInstance)
811 {
812 wxhInstance = (HINSTANCE) hInstance;
813 wxEntryStart(0, 0);
814
815 // The app may have declared a global application object, but we recommend
816 // the IMPLEMENT_APP macro is used instead, which sets an initializer function
817 // for delayed, dynamic app object construction.
818 if (!wxTheApp)
819 {
820 wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
821 "No initializer - use IMPLEMENT_APP macro." );
822
823 wxTheApp = (* wxApp::GetInitializerFunction()) ();
824 }
825
826 wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
827
828 wxTheApp->argc = 0;
829 wxTheApp->argv = NULL;
830
831 wxEntryInitGui();
832
833 wxTheApp->OnInit();
834
835 wxWindow *topWindow = wxTheApp->GetTopWindow();
836 if ( topWindow && topWindow->GetHWND())
837 {
838 topWindow->Show(TRUE);
839 }
840
841 return 1;
842 }
843 #endif // _WINDLL
844
845 //// Static member initialization
846
847 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
848
849 wxApp::wxApp()
850 {
851 m_topWindow = NULL;
852 wxTheApp = this;
853 m_wantDebugOutput = TRUE;
854
855 argc = 0;
856 argv = NULL;
857 m_printMode = wxPRINT_WINDOWS;
858 m_exitOnFrameDelete = TRUE;
859 m_auto3D = TRUE;
860 }
861
862 wxApp::~wxApp()
863 {
864 // Delete command-line args
865 int i;
866 for (i = 0; i < argc; i++)
867 {
868 delete[] argv[i];
869 }
870 delete[] argv;
871 }
872
873 bool wxApp::Initialized()
874 {
875 #ifndef _WINDLL
876 if (GetTopWindow())
877 return TRUE;
878 else
879 return FALSE;
880 #else // Assume initialized if DLL (no way of telling)
881 return TRUE;
882 #endif
883 }
884
885 /*
886 * Get and process a message, returning FALSE if WM_QUIT
887 * received (and also set the flag telling the app to exit the main loop)
888 *
889 */
890 bool wxApp::DoMessage()
891 {
892 BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
893 if ( rc == 0 )
894 {
895 // got WM_QUIT
896 m_keepGoing = FALSE;
897
898 return FALSE;
899 }
900 else if ( rc == -1 )
901 {
902 // should never happen, but let's test for it nevertheless
903 wxLogLastError(wxT("GetMessage"));
904 }
905 else
906 {
907 #if wxUSE_THREADS
908 wxASSERT_MSG( wxThread::IsMain(),
909 wxT("only the main thread can process Windows messages") );
910
911 static bool s_hadGuiLock = TRUE;
912 static wxMsgArray s_aSavedMessages;
913
914 // if a secondary thread owns is doing GUI calls, save all messages for
915 // later processing - we can't process them right now because it will
916 // lead to recursive library calls (and we're not reentrant)
917 if ( !wxGuiOwnedByMainThread() )
918 {
919 s_hadGuiLock = FALSE;
920
921 // leave out WM_COMMAND messages: too dangerous, sometimes
922 // the message will be processed twice
923 if ( !wxIsWaitingForThread() ||
924 s_currentMsg.message != WM_COMMAND )
925 {
926 s_aSavedMessages.Add(s_currentMsg);
927 }
928
929 return TRUE;
930 }
931 else
932 {
933 // have we just regained the GUI lock? if so, post all of the saved
934 // messages
935 //
936 // FIXME of course, it's not _exactly_ the same as processing the
937 // messages normally - expect some things to break...
938 if ( !s_hadGuiLock )
939 {
940 s_hadGuiLock = TRUE;
941
942 size_t count = s_aSavedMessages.Count();
943 for ( size_t n = 0; n < count; n++ )
944 {
945 MSG& msg = s_aSavedMessages[n];
946
947 if ( !ProcessMessage((WXMSG *)&msg) )
948 {
949 ::TranslateMessage(&msg);
950 ::DispatchMessage(&msg);
951 }
952 }
953
954 s_aSavedMessages.Empty();
955 }
956 }
957 #endif // wxUSE_THREADS
958
959 // Process the message
960 if ( !ProcessMessage((WXMSG *)&s_currentMsg) )
961 {
962 ::TranslateMessage(&s_currentMsg);
963 ::DispatchMessage(&s_currentMsg);
964 }
965 }
966
967 return TRUE;
968 }
969
970 /*
971 * Keep trying to process messages until WM_QUIT
972 * received.
973 *
974 * If there are messages to be processed, they will all be
975 * processed and OnIdle will not be called.
976 * When there are no more messages, OnIdle is called.
977 * If OnIdle requests more time,
978 * it will be repeatedly called so long as there are no pending messages.
979 * A 'feature' of this is that once OnIdle has decided that no more processing
980 * is required, then it won't get processing time until further messages
981 * are processed (it'll sit in DoMessage).
982 */
983
984 int wxApp::MainLoop()
985 {
986 m_keepGoing = TRUE;
987
988 while ( m_keepGoing )
989 {
990 #if wxUSE_THREADS
991 wxMutexGuiLeaveOrEnter();
992 #endif // wxUSE_THREADS
993
994 while ( !Pending() && ProcessIdle() )
995 ;
996
997 // a message came or no more idle processing to do
998 DoMessage();
999 }
1000
1001 return s_currentMsg.wParam;
1002 }
1003
1004 // Returns TRUE if more time is needed.
1005 bool wxApp::ProcessIdle()
1006 {
1007 wxIdleEvent event;
1008 event.SetEventObject(this);
1009 ProcessEvent(event);
1010
1011 return event.MoreRequested();
1012 }
1013
1014 void wxApp::ExitMainLoop()
1015 {
1016 // VZ: why not ::PostQuitMessage()?
1017 m_keepGoing = FALSE;
1018 }
1019
1020 bool wxApp::Pending()
1021 {
1022 return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0;
1023 }
1024
1025 void wxApp::Dispatch()
1026 {
1027 DoMessage();
1028 }
1029
1030 /*
1031 * Give all windows a chance to preprocess
1032 * the message. Some may have accelerator tables, or have
1033 * MDI complications.
1034 */
1035
1036 bool wxApp::ProcessMessage(WXMSG *wxmsg)
1037 {
1038 MSG *msg = (MSG *)wxmsg;
1039 HWND hWnd = msg->hwnd;
1040 wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hWnd);
1041
1042 #if wxUSE_TOOLTIPS
1043 // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
1044 // popup the tooltip bubbles
1045 if ( wndThis && (msg->message == WM_MOUSEMOVE) )
1046 {
1047 wxToolTip *tt = wndThis->GetToolTip();
1048 if ( tt )
1049 {
1050 tt->RelayEvent(wxmsg);
1051 }
1052 }
1053 #endif // wxUSE_TOOLTIPS
1054
1055 // Try translations first; find the youngest window with
1056 // a translation table.
1057 wxWindow *wnd;
1058
1059 for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
1060 {
1061 if ( wnd->MSWTranslateMessage(wxmsg) )
1062 return TRUE;
1063 }
1064
1065 // Anyone for a non-translation message? Try youngest descendants first.
1066 for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
1067 {
1068 if ( wnd->MSWProcessMessage(wxmsg) )
1069 return TRUE;
1070 }
1071
1072 return FALSE;
1073 }
1074
1075 void wxApp::OnIdle(wxIdleEvent& event)
1076 {
1077 static bool s_inOnIdle = FALSE;
1078
1079 // Avoid recursion (via ProcessEvent default case)
1080 if ( s_inOnIdle )
1081 return;
1082
1083 s_inOnIdle = TRUE;
1084
1085 // If there are pending events, we must process them: pending events
1086 // are either events to the threads other than main or events posted
1087 // with wxPostEvent() functions
1088 // GRG: I have moved this here so that all pending events are processed
1089 // before starting to delete any objects. This behaves better (in
1090 // particular, wrt wxPostEvent) and is coherent with wxGTK's current
1091 // behaviour. Changed Feb/2000 before 2.1.14
1092 ProcessPendingEvents();
1093
1094 // 'Garbage' collection of windows deleted with Close().
1095 DeletePendingObjects();
1096
1097 #if wxUSE_LOG
1098 // flush the logged messages if any
1099 wxLog::FlushActive();
1100 #endif // wxUSE_LOG
1101
1102 // Send OnIdle events to all windows
1103 if ( SendIdleEvents() )
1104 {
1105 // SendIdleEvents() returns TRUE if at least one window requested more
1106 // idle events
1107 event.RequestMore(TRUE);
1108 }
1109
1110 s_inOnIdle = FALSE;
1111 }
1112
1113 // Send idle event to all top-level windows
1114 bool wxApp::SendIdleEvents()
1115 {
1116 bool needMore = FALSE;
1117
1118 wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1119 while (node)
1120 {
1121 wxWindow* win = node->GetData();
1122 if (SendIdleEvents(win))
1123 needMore = TRUE;
1124 node = node->GetNext();
1125 }
1126
1127 return needMore;
1128 }
1129
1130 // Send idle event to window and all subwindows
1131 bool wxApp::SendIdleEvents(wxWindow* win)
1132 {
1133 bool needMore = FALSE;
1134
1135 wxIdleEvent event;
1136 event.SetEventObject(win);
1137 win->GetEventHandler()->ProcessEvent(event);
1138
1139 if (event.MoreRequested())
1140 needMore = TRUE;
1141
1142 wxNode* node = win->GetChildren().First();
1143 while (node)
1144 {
1145 wxWindow* win = (wxWindow*) node->Data();
1146 if (SendIdleEvents(win))
1147 needMore = TRUE;
1148
1149 node = node->Next();
1150 }
1151 return needMore;
1152 }
1153
1154 void wxApp::DeletePendingObjects()
1155 {
1156 wxNode *node = wxPendingDelete.First();
1157 while (node)
1158 {
1159 wxObject *obj = (wxObject *)node->Data();
1160
1161 delete obj;
1162
1163 if (wxPendingDelete.Member(obj))
1164 delete node;
1165
1166 // Deleting one object may have deleted other pending
1167 // objects, so start from beginning of list again.
1168 node = wxPendingDelete.First();
1169 }
1170 }
1171
1172 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1173 {
1174 if (GetTopWindow())
1175 GetTopWindow()->Close(TRUE);
1176 }
1177
1178 // Default behaviour: close the application with prompts. The
1179 // user can veto the close, and therefore the end session.
1180 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1181 {
1182 if (GetTopWindow())
1183 {
1184 if (!GetTopWindow()->Close(!event.CanVeto()))
1185 event.Veto(TRUE);
1186 }
1187 }
1188
1189 /* static */
1190 int wxApp::GetComCtl32Version()
1191 {
1192 // cache the result
1193 static int s_verComCtl32 = -1;
1194
1195 wxCRIT_SECT_DECLARE(csComCtl32);
1196 wxCRIT_SECT_LOCKER(lock, csComCtl32);
1197
1198 if ( s_verComCtl32 == -1 )
1199 {
1200 // initally assume no comctl32.dll at all
1201 s_verComCtl32 = 0;
1202
1203 // do we have it?
1204 HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
1205
1206 // if so, then we can check for the version
1207 if ( hModuleComCtl32 )
1208 {
1209 // try to use DllGetVersion() if available in _headers_
1210 #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
1211 DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
1212 ::GetProcAddress(hModuleComCtl32, "DllGetVersion");
1213 if ( pfnDllGetVersion )
1214 {
1215 DLLVERSIONINFO dvi;
1216 dvi.cbSize = sizeof(dvi);
1217
1218 HRESULT hr = (*pfnDllGetVersion)(&dvi);
1219 if ( FAILED(hr) )
1220 {
1221 wxLogApiError(_T("DllGetVersion"), hr);
1222 }
1223 else
1224 {
1225 // this is incompatible with _WIN32_IE values, but
1226 // compatible with the other values returned by
1227 // GetComCtl32Version()
1228 s_verComCtl32 = 100*dvi.dwMajorVersion +
1229 dvi.dwMinorVersion;
1230 }
1231 }
1232 #endif
1233 // DllGetVersion() unavailable either during compile or
1234 // run-time, try to guess the version otherwise
1235 if ( !s_verComCtl32 )
1236 {
1237 // InitCommonControlsEx is unique to 4.70 and later
1238 FARPROC theProc = ::GetProcAddress
1239 (
1240 hModuleComCtl32,
1241 "InitCommonControlsEx"
1242 );
1243
1244 if ( !theProc )
1245 {
1246 // not found, must be 4.00
1247 s_verComCtl32 = 400;
1248 }
1249 else
1250 {
1251 // many symbols appeared in comctl32 4.71, could use
1252 // any of them except may be DllInstall
1253 theProc = ::GetProcAddress
1254 (
1255 hModuleComCtl32,
1256 "InitializeFlatSB"
1257 );
1258 if ( !theProc )
1259 {
1260 // not found, must be 4.70
1261 s_verComCtl32 = 470;
1262 }
1263 else
1264 {
1265 // found, must be 4.71
1266 s_verComCtl32 = 471;
1267 }
1268 }
1269 }
1270 }
1271 }
1272
1273 return s_verComCtl32;
1274 }
1275
1276 void wxExit()
1277 {
1278 wxLogError(_("Fatal error: exiting"));
1279
1280 wxApp::CleanUp();
1281 exit(0);
1282 }
1283
1284 // Yield to incoming messages
1285
1286 static bool gs_inYield = FALSE;
1287
1288 bool wxYield()
1289 {
1290 // disable log flushing from here because a call to wxYield() shouldn't
1291 // normally result in message boxes popping up &c
1292 wxLog::Suspend();
1293
1294 #ifdef __WXDEBUG__
1295 if (gs_inYield)
1296 wxFAIL_MSG( wxT("wxYield called recursively" ) );
1297 #endif
1298
1299 gs_inYield = TRUE;
1300
1301 // we don't want to process WM_QUIT from here - it should be processed in
1302 // the main event loop in order to stop it
1303 MSG msg;
1304 while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1305 msg.message != WM_QUIT )
1306 {
1307 #if wxUSE_THREADS
1308 wxMutexGuiLeaveOrEnter();
1309 #endif // wxUSE_THREADS
1310
1311 if ( !wxTheApp->DoMessage() )
1312 break;
1313 }
1314
1315 // If they are pending events, we must process them.
1316 if (wxTheApp)
1317 wxTheApp->ProcessPendingEvents();
1318
1319 // let the logs be flashed again
1320 wxLog::Resume();
1321
1322 gs_inYield = FALSE;
1323
1324 return TRUE;
1325 }
1326
1327 // Yield to incoming messages; but fail silently if recursion is detected.
1328 bool wxYieldIfNeeded()
1329 {
1330 if (gs_inYield)
1331 return FALSE;
1332
1333 return wxYield();
1334 }
1335
1336 bool wxHandleFatalExceptions(bool doit)
1337 {
1338 #if wxUSE_ON_FATAL_EXCEPTION
1339 // assume this can only be called from the main thread
1340 gs_handleExceptions = doit;
1341
1342 return TRUE;
1343 #else
1344 wxFAIL_MSG(_T("set wxUSE_ON_FATAL_EXCEPTION to 1 to sue this function"));
1345
1346 (void)doit;
1347 return FALSE;
1348 #endif
1349 }
1350
1351 //-----------------------------------------------------------------------------
1352 // wxWakeUpIdle
1353 //-----------------------------------------------------------------------------
1354
1355 void wxWakeUpIdle()
1356 {
1357 // Send the top window a dummy message so idle handler processing will
1358 // start up again. Doing it this way ensures that the idle handler
1359 // wakes up in the right thread (see also wxWakeUpMainThread() which does
1360 // the same for the main app thread only)
1361 wxWindow *topWindow = wxTheApp->GetTopWindow();
1362 if ( topWindow )
1363 {
1364 if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
1365 {
1366 // should never happen
1367 wxLogLastError(wxT("PostMessage(WM_NULL)"));
1368 }
1369 }
1370 }
1371
1372 //-----------------------------------------------------------------------------
1373
1374 wxIcon
1375 wxApp::GetStdIcon(int which) const
1376 {
1377 switch(which)
1378 {
1379 case wxICON_INFORMATION:
1380 return wxIcon("wxICON_INFO");
1381
1382 case wxICON_QUESTION:
1383 return wxIcon("wxICON_QUESTION");
1384
1385 case wxICON_EXCLAMATION:
1386 return wxIcon("wxICON_WARNING");
1387
1388 default:
1389 wxFAIL_MSG(wxT("requested non existent standard icon"));
1390 // still fall through
1391
1392 case wxICON_HAND:
1393 return wxIcon("wxICON_ERROR");
1394 }
1395 }
1396
1397 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1398 // if in a separate file. So include it here to ensure it's linked.
1399 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL))
1400 #include "main.cpp"
1401 #endif