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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 ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
605 #endif
606
607 wxClassInfo::CleanUpClasses();
608
609 delete wxTheApp;
610 wxTheApp = NULL;
611
612 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
613 // At this point we want to check if there are any memory
614 // blocks that aren't part of the wxDebugContext itself,
615 // as a special case. Then when dumping we need to ignore
616 // wxDebugContext, too.
617 if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
618 {
619 wxLogMessage(wxT("There were memory leaks."));
620 wxDebugContext::Dump();
621 wxDebugContext::PrintStatistics();
622 }
623 // wxDebugContext::SetStream(NULL, NULL);
624 #endif
625
626 #if wxUSE_LOG
627 // do it as the very last thing because everything else can log messages
628 delete wxLog::SetActiveTarget(NULL);
629 #endif // wxUSE_LOG
630 }
631
632 //----------------------------------------------------------------------
633 // Entry point helpers, used by wxPython
634 //----------------------------------------------------------------------
635
636 int WXDLLEXPORT wxEntryStart( int WXUNUSED(argc), char** WXUNUSED(argv) )
637 {
638 return wxApp::Initialize();
639 }
640
641 int WXDLLEXPORT wxEntryInitGui()
642 {
643 wxTheApp->OnInitGui();
644 return 0;
645 }
646
647 void WXDLLEXPORT wxEntryCleanup()
648 {
649 wxApp::CleanUp();
650 }
651
652
653 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
654
655 // temporarily disable this warning which would be generated in release builds
656 // because of __try
657 #ifdef __VISUALC__
658 #pragma warning(disable: 4715) // not all control paths return a value
659 #endif // Visual C++
660
661 //----------------------------------------------------------------------
662 // Main wxWindows entry point
663 //----------------------------------------------------------------------
664 int wxEntry(WXHINSTANCE hInstance,
665 WXHINSTANCE WXUNUSED(hPrevInstance),
666 char *lpCmdLine,
667 int nCmdShow,
668 bool enterLoop)
669 {
670 // do check for memory leaks on program exit
671 // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
672 // deallocated memory which may be used to simulate low-memory condition)
673 wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
674 #ifdef __MWERKS__
675 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
676 // This seems to be necessary since there are 'rogue'
677 // objects present at this point (perhaps global objects?)
678 // Setting a checkpoint will ignore them as far as the
679 // memory checking facility is concerned.
680 // Of course you may argue that memory allocated in globals should be
681 // checked, but this is a reasonable compromise.
682 wxDebugContext::SetCheckpoint();
683 #endif
684 #endif
685
686 // take everything into a try-except block to be able to call
687 // OnFatalException() if necessary
688 #if wxUSE_ON_FATAL_EXCEPTION
689 __try {
690 #endif
691 wxhInstance = (HINSTANCE) hInstance;
692
693 if (!wxEntryStart(0,0))
694 return 0;
695
696 // create the application object or ensure that one already exists
697 if (!wxTheApp)
698 {
699 // The app may have declared a global application object, but we recommend
700 // the IMPLEMENT_APP macro is used instead, which sets an initializer
701 // function for delayed, dynamic app object construction.
702 wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
703 wxT("No initializer - use IMPLEMENT_APP macro.") );
704
705 wxTheApp = (*wxApp::GetInitializerFunction()) ();
706 }
707
708 wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
709
710 // save the WinMain() parameters
711 wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
712 wxTheApp->m_nCmdShow = nCmdShow;
713
714 // GUI-specific initialisation. In fact on Windows we don't have any,
715 // but this call is provided for compatibility across platforms.
716 wxEntryInitGui();
717
718 // We really don't want timestamps by default, because it means
719 // we can't simply double-click on the error message and get to that
720 // line in the source. So VC++ at least, let's have a sensible default.
721 #ifdef __VISUALC__
722 wxLog::SetTimestamp(NULL);
723 #endif
724
725 int retValue = 0;
726
727 // it is common to create a modal dialog in OnInit() (to ask/notify the
728 // user about something) but it wouldn't work if we don't change the
729 // "exit on delete last frame" flag here as when this dialog is
730 // deleted, the app would terminate (it was the last top level window
731 // as the main frame wasn't created yet!), so disable this behaviour
732 // temproarily
733 bool exitOnLastFrameDelete = wxTheApp->GetExitOnFrameDelete();
734 wxTheApp->SetExitOnFrameDelete(FALSE);
735
736 // init the app
737 retValue = wxTheApp->OnInit() ? 0 : -1;
738
739 // restore the old flag value
740 wxTheApp->SetExitOnFrameDelete(exitOnLastFrameDelete);
741
742 if ( retValue == 0 )
743 {
744 if ( enterLoop )
745 {
746 // run the main loop
747 retValue = wxTheApp->OnRun();
748 }
749 else
750 {
751 // we want to initialize, but not run or exit immediately.
752 return 1;
753 }
754 }
755 //else: app initialization failed, so we skipped OnRun()
756
757 wxWindow *topWindow = wxTheApp->GetTopWindow();
758 if ( topWindow )
759 {
760 // Forcibly delete the window.
761 if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
762 topWindow->IsKindOf(CLASSINFO(wxDialog)) )
763 {
764 topWindow->Close(TRUE);
765 wxTheApp->DeletePendingObjects();
766 }
767 else
768 {
769 delete topWindow;
770 wxTheApp->SetTopWindow(NULL);
771 }
772 }
773
774 wxTheApp->OnExit();
775
776 wxEntryCleanup();
777
778 return retValue;
779
780 #if wxUSE_ON_FATAL_EXCEPTION
781 }
782 __except ( gs_handleExceptions ? EXCEPTION_EXECUTE_HANDLER
783 : EXCEPTION_CONTINUE_SEARCH ) {
784 if ( wxTheApp )
785 {
786 // give the user a chance to do something special about this
787 wxTheApp->OnFatalException();
788 }
789
790 ::ExitProcess(3); // the same exit code as abort()
791
792 // NOTREACHED
793 }
794 #endif // wxUSE_ON_FATAL_EXCEPTION
795 }
796
797 // restore warning state
798 #ifdef __VISUALC__
799 #pragma warning(default: 4715) // not all control paths return a value
800 #endif // Visual C++
801
802 #else /* _WINDLL */
803
804 //----------------------------------------------------------------------
805 // Entry point for wxWindows + the App in a DLL
806 //----------------------------------------------------------------------
807
808 int wxEntry(WXHINSTANCE hInstance)
809 {
810 wxhInstance = (HINSTANCE) hInstance;
811 wxEntryStart(0, 0);
812
813 // The app may have declared a global application object, but we recommend
814 // the IMPLEMENT_APP macro is used instead, which sets an initializer function
815 // for delayed, dynamic app object construction.
816 if (!wxTheApp)
817 {
818 wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
819 "No initializer - use IMPLEMENT_APP macro." );
820
821 wxTheApp = (* wxApp::GetInitializerFunction()) ();
822 }
823
824 wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
825
826 wxTheApp->argc = 0;
827 wxTheApp->argv = NULL;
828
829 wxEntryInitGui();
830
831 wxTheApp->OnInit();
832
833 wxWindow *topWindow = wxTheApp->GetTopWindow();
834 if ( topWindow && topWindow->GetHWND())
835 {
836 topWindow->Show(TRUE);
837 }
838
839 return 1;
840 }
841 #endif // _WINDLL
842
843 //// Static member initialization
844
845 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
846
847 wxApp::wxApp()
848 {
849 m_topWindow = NULL;
850 wxTheApp = this;
851 m_wantDebugOutput = TRUE;
852
853 argc = 0;
854 argv = NULL;
855 m_printMode = wxPRINT_WINDOWS;
856 m_exitOnFrameDelete = TRUE;
857 m_auto3D = TRUE;
858 }
859
860 wxApp::~wxApp()
861 {
862 // Delete command-line args
863 int i;
864 for (i = 0; i < argc; i++)
865 {
866 delete[] argv[i];
867 }
868 delete[] argv;
869 }
870
871 bool wxApp::Initialized()
872 {
873 #ifndef _WINDLL
874 if (GetTopWindow())
875 return TRUE;
876 else
877 return FALSE;
878 #else // Assume initialized if DLL (no way of telling)
879 return TRUE;
880 #endif
881 }
882
883 /*
884 * Get and process a message, returning FALSE if WM_QUIT
885 * received (and also set the flag telling the app to exit the main loop)
886 *
887 */
888 bool wxApp::DoMessage()
889 {
890 BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
891 if ( rc == 0 )
892 {
893 // got WM_QUIT
894 m_keepGoing = FALSE;
895
896 return FALSE;
897 }
898 else if ( rc == -1 )
899 {
900 // should never happen, but let's test for it nevertheless
901 wxLogLastError(wxT("GetMessage"));
902 }
903 else
904 {
905 #if wxUSE_THREADS
906 wxASSERT_MSG( wxThread::IsMain(),
907 wxT("only the main thread can process Windows messages") );
908
909 static bool s_hadGuiLock = TRUE;
910 static wxMsgArray s_aSavedMessages;
911
912 // if a secondary thread owns is doing GUI calls, save all messages for
913 // later processing - we can't process them right now because it will
914 // lead to recursive library calls (and we're not reentrant)
915 if ( !wxGuiOwnedByMainThread() )
916 {
917 s_hadGuiLock = FALSE;
918
919 // leave out WM_COMMAND messages: too dangerous, sometimes
920 // the message will be processed twice
921 if ( !wxIsWaitingForThread() ||
922 s_currentMsg.message != WM_COMMAND )
923 {
924 s_aSavedMessages.Add(s_currentMsg);
925 }
926
927 return TRUE;
928 }
929 else
930 {
931 // have we just regained the GUI lock? if so, post all of the saved
932 // messages
933 //
934 // FIXME of course, it's not _exactly_ the same as processing the
935 // messages normally - expect some things to break...
936 if ( !s_hadGuiLock )
937 {
938 s_hadGuiLock = TRUE;
939
940 size_t count = s_aSavedMessages.Count();
941 for ( size_t n = 0; n < count; n++ )
942 {
943 MSG& msg = s_aSavedMessages[n];
944
945 if ( !ProcessMessage((WXMSG *)&msg) )
946 {
947 ::TranslateMessage(&msg);
948 ::DispatchMessage(&msg);
949 }
950 }
951
952 s_aSavedMessages.Empty();
953 }
954 }
955 #endif // wxUSE_THREADS
956
957 // Process the message
958 if ( !ProcessMessage((WXMSG *)&s_currentMsg) )
959 {
960 ::TranslateMessage(&s_currentMsg);
961 ::DispatchMessage(&s_currentMsg);
962 }
963 }
964
965 return TRUE;
966 }
967
968 /*
969 * Keep trying to process messages until WM_QUIT
970 * received.
971 *
972 * If there are messages to be processed, they will all be
973 * processed and OnIdle will not be called.
974 * When there are no more messages, OnIdle is called.
975 * If OnIdle requests more time,
976 * it will be repeatedly called so long as there are no pending messages.
977 * A 'feature' of this is that once OnIdle has decided that no more processing
978 * is required, then it won't get processing time until further messages
979 * are processed (it'll sit in DoMessage).
980 */
981
982 int wxApp::MainLoop()
983 {
984 m_keepGoing = TRUE;
985
986 while ( m_keepGoing )
987 {
988 #if wxUSE_THREADS
989 wxMutexGuiLeaveOrEnter();
990 #endif // wxUSE_THREADS
991
992 while ( !Pending() && ProcessIdle() )
993 ;
994
995 // a message came or no more idle processing to do
996 DoMessage();
997 }
998
999 return s_currentMsg.wParam;
1000 }
1001
1002 // Returns TRUE if more time is needed.
1003 bool wxApp::ProcessIdle()
1004 {
1005 wxIdleEvent event;
1006 event.SetEventObject(this);
1007 ProcessEvent(event);
1008
1009 return event.MoreRequested();
1010 }
1011
1012 void wxApp::ExitMainLoop()
1013 {
1014 // VZ: why not ::PostQuitMessage()?
1015 m_keepGoing = FALSE;
1016 }
1017
1018 bool wxApp::Pending()
1019 {
1020 return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0;
1021 }
1022
1023 void wxApp::Dispatch()
1024 {
1025 DoMessage();
1026 }
1027
1028 /*
1029 * Give all windows a chance to preprocess
1030 * the message. Some may have accelerator tables, or have
1031 * MDI complications.
1032 */
1033
1034 bool wxApp::ProcessMessage(WXMSG *wxmsg)
1035 {
1036 MSG *msg = (MSG *)wxmsg;
1037 HWND hWnd = msg->hwnd;
1038 wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hWnd);
1039
1040 #if wxUSE_TOOLTIPS
1041 // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
1042 // popup the tooltip bubbles
1043 if ( wndThis && (msg->message == WM_MOUSEMOVE) )
1044 {
1045 wxToolTip *tt = wndThis->GetToolTip();
1046 if ( tt )
1047 {
1048 tt->RelayEvent(wxmsg);
1049 }
1050 }
1051 #endif // wxUSE_TOOLTIPS
1052
1053 // Try translations first; find the youngest window with
1054 // a translation table.
1055 wxWindow *wnd;
1056
1057 for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
1058 {
1059 if ( wnd->MSWTranslateMessage(wxmsg) )
1060 return TRUE;
1061 }
1062
1063 // Anyone for a non-translation message? Try youngest descendants first.
1064 for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
1065 {
1066 if ( wnd->MSWProcessMessage(wxmsg) )
1067 return TRUE;
1068 }
1069
1070 return FALSE;
1071 }
1072
1073 void wxApp::OnIdle(wxIdleEvent& event)
1074 {
1075 static bool s_inOnIdle = FALSE;
1076
1077 // Avoid recursion (via ProcessEvent default case)
1078 if ( s_inOnIdle )
1079 return;
1080
1081 s_inOnIdle = TRUE;
1082
1083 // If there are pending events, we must process them: pending events
1084 // are either events to the threads other than main or events posted
1085 // with wxPostEvent() functions
1086 // GRG: I have moved this here so that all pending events are processed
1087 // before starting to delete any objects. This behaves better (in
1088 // particular, wrt wxPostEvent) and is coherent with wxGTK's current
1089 // behaviour. Changed Feb/2000 before 2.1.14
1090 ProcessPendingEvents();
1091
1092 // 'Garbage' collection of windows deleted with Close().
1093 DeletePendingObjects();
1094
1095 #if wxUSE_LOG
1096 // flush the logged messages if any
1097 wxLog::FlushActive();
1098 #endif // wxUSE_LOG
1099
1100 // Send OnIdle events to all windows
1101 if ( SendIdleEvents() )
1102 {
1103 // SendIdleEvents() returns TRUE if at least one window requested more
1104 // idle events
1105 event.RequestMore(TRUE);
1106 }
1107
1108 s_inOnIdle = FALSE;
1109 }
1110
1111 // Send idle event to all top-level windows
1112 bool wxApp::SendIdleEvents()
1113 {
1114 bool needMore = FALSE;
1115
1116 wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1117 while (node)
1118 {
1119 wxWindow* win = node->GetData();
1120 if (SendIdleEvents(win))
1121 needMore = TRUE;
1122 node = node->GetNext();
1123 }
1124
1125 return needMore;
1126 }
1127
1128 // Send idle event to window and all subwindows
1129 bool wxApp::SendIdleEvents(wxWindow* win)
1130 {
1131 bool needMore = FALSE;
1132
1133 wxIdleEvent event;
1134 event.SetEventObject(win);
1135 win->GetEventHandler()->ProcessEvent(event);
1136
1137 if (event.MoreRequested())
1138 needMore = TRUE;
1139
1140 wxNode* node = win->GetChildren().First();
1141 while (node)
1142 {
1143 wxWindow* win = (wxWindow*) node->Data();
1144 if (SendIdleEvents(win))
1145 needMore = TRUE;
1146
1147 node = node->Next();
1148 }
1149 return needMore;
1150 }
1151
1152 void wxApp::DeletePendingObjects()
1153 {
1154 wxNode *node = wxPendingDelete.First();
1155 while (node)
1156 {
1157 wxObject *obj = (wxObject *)node->Data();
1158
1159 delete obj;
1160
1161 if (wxPendingDelete.Member(obj))
1162 delete node;
1163
1164 // Deleting one object may have deleted other pending
1165 // objects, so start from beginning of list again.
1166 node = wxPendingDelete.First();
1167 }
1168 }
1169
1170 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1171 {
1172 if (GetTopWindow())
1173 GetTopWindow()->Close(TRUE);
1174 }
1175
1176 // Default behaviour: close the application with prompts. The
1177 // user can veto the close, and therefore the end session.
1178 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1179 {
1180 if (GetTopWindow())
1181 {
1182 if (!GetTopWindow()->Close(!event.CanVeto()))
1183 event.Veto(TRUE);
1184 }
1185 }
1186
1187 /* static */
1188 int wxApp::GetComCtl32Version()
1189 {
1190 // cache the result
1191 static int s_verComCtl32 = -1;
1192
1193 wxCRIT_SECT_DECLARE(csComCtl32);
1194 wxCRIT_SECT_LOCKER(lock, csComCtl32);
1195
1196 if ( s_verComCtl32 == -1 )
1197 {
1198 // initally assume no comctl32.dll at all
1199 s_verComCtl32 = 0;
1200
1201 // do we have it?
1202 HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
1203
1204 // if so, then we can check for the version
1205 if ( hModuleComCtl32 )
1206 {
1207 // try to use DllGetVersion() if available in _headers_
1208 #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
1209 DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
1210 ::GetProcAddress(hModuleComCtl32, "DllGetVersion");
1211 if ( pfnDllGetVersion )
1212 {
1213 DLLVERSIONINFO dvi;
1214 dvi.cbSize = sizeof(dvi);
1215
1216 HRESULT hr = (*pfnDllGetVersion)(&dvi);
1217 if ( FAILED(hr) )
1218 {
1219 wxLogApiError(_T("DllGetVersion"), hr);
1220 }
1221 else
1222 {
1223 // this is incompatible with _WIN32_IE values, but
1224 // compatible with the other values returned by
1225 // GetComCtl32Version()
1226 s_verComCtl32 = 100*dvi.dwMajorVersion +
1227 dvi.dwMinorVersion;
1228 }
1229 }
1230 #endif
1231 // DllGetVersion() unavailable either during compile or
1232 // run-time, try to guess the version otherwise
1233 if ( !s_verComCtl32 )
1234 {
1235 // InitCommonControlsEx is unique to 4.70 and later
1236 FARPROC theProc = ::GetProcAddress
1237 (
1238 hModuleComCtl32,
1239 "InitCommonControlsEx"
1240 );
1241
1242 if ( !theProc )
1243 {
1244 // not found, must be 4.00
1245 s_verComCtl32 = 400;
1246 }
1247 else
1248 {
1249 // many symbols appeared in comctl32 4.71, could use
1250 // any of them except may be DllInstall
1251 theProc = ::GetProcAddress
1252 (
1253 hModuleComCtl32,
1254 "InitializeFlatSB"
1255 );
1256 if ( !theProc )
1257 {
1258 // not found, must be 4.70
1259 s_verComCtl32 = 470;
1260 }
1261 else
1262 {
1263 // found, must be 4.71
1264 s_verComCtl32 = 471;
1265 }
1266 }
1267 }
1268 }
1269 }
1270
1271 return s_verComCtl32;
1272 }
1273
1274 void wxExit()
1275 {
1276 wxLogError(_("Fatal error: exiting"));
1277
1278 wxApp::CleanUp();
1279 exit(0);
1280 }
1281
1282 // Yield to incoming messages
1283 bool wxYield()
1284 {
1285 // disable log flushing from here because a call to wxYield() shouldn't
1286 // normally result in message boxes popping up &c
1287 wxLog::Suspend();
1288
1289 // we don't want to process WM_QUIT from here - it should be processed in
1290 // the main event loop in order to stop it
1291 MSG msg;
1292 while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1293 msg.message != WM_QUIT )
1294 {
1295 #if wxUSE_THREADS
1296 wxMutexGuiLeaveOrEnter();
1297 #endif // wxUSE_THREADS
1298
1299 if ( !wxTheApp->DoMessage() )
1300 break;
1301 }
1302
1303 // If they are pending events, we must process them.
1304 if (wxTheApp)
1305 wxTheApp->ProcessPendingEvents();
1306
1307 // let the logs be flashed again
1308 wxLog::Resume();
1309
1310 return TRUE;
1311 }
1312
1313 bool wxHandleFatalExceptions(bool doit)
1314 {
1315 #if wxUSE_ON_FATAL_EXCEPTION
1316 // assume this can only be called from the main thread
1317 gs_handleExceptions = doit;
1318
1319 return TRUE;
1320 #else
1321 wxFAIL_MSG(_T("set wxUSE_ON_FATAL_EXCEPTION to 1 to sue this function"));
1322
1323 return FALSE;
1324 #endif
1325 }
1326
1327 //-----------------------------------------------------------------------------
1328 // wxWakeUpIdle
1329 //-----------------------------------------------------------------------------
1330
1331 void wxWakeUpIdle()
1332 {
1333 // Send the top window a dummy message so idle handler processing will
1334 // start up again. Doing it this way ensures that the idle handler
1335 // wakes up in the right thread (see also wxWakeUpMainThread() which does
1336 // the same for the main app thread only)
1337 wxWindow *topWindow = wxTheApp->GetTopWindow();
1338 if ( topWindow )
1339 {
1340 if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
1341 {
1342 // should never happen
1343 wxLogLastError(wxT("PostMessage(WM_NULL)"));
1344 }
1345 }
1346 }
1347
1348 //-----------------------------------------------------------------------------
1349
1350 wxIcon
1351 wxApp::GetStdIcon(int which) const
1352 {
1353 switch(which)
1354 {
1355 case wxICON_INFORMATION:
1356 return wxIcon("wxICON_INFO");
1357
1358 case wxICON_QUESTION:
1359 return wxIcon("wxICON_QUESTION");
1360
1361 case wxICON_EXCLAMATION:
1362 return wxIcon("wxICON_WARNING");
1363
1364 default:
1365 wxFAIL_MSG(wxT("requested non existent standard icon"));
1366 // still fall through
1367
1368 case wxICON_HAND:
1369 return wxIcon("wxICON_ERROR");
1370 }
1371 }
1372
1373 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1374 // if in a separate file. So include it here to ensure it's linked.
1375 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL))
1376 #include "main.cpp"
1377 #endif