src/msw/app.cpp

   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 // OLE is used for drag-and-drop, clipboard, OLE Automation...
  71 #ifndef wxUSE_NORLANDER_HEADERS
  72 #if defined(__GNUWIN32__) || defined(__SC__) || defined(__SALFORDC__)
  73     #undef wxUSE_OLE
  74
  75     #define  wxUSE_OLE 0
  76 #endif // broken compilers
  77 #endif
  78
  79 #if wxUSE_OLE
  80     #include <ole2.h>
  81 #endif
  82
  83 #include <string.h>
  84 #include <ctype.h>
  85
  86 #if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
  87     #include <commctrl.h>
  88 #endif
  89
  90 #include "wx/msw/msvcrt.h"
  91
  92 // ----------------------------------------------------------------------------
  93 // conditional compilation
  94 // ----------------------------------------------------------------------------
  95
  96 // The macro _WIN32_IE is defined by commctrl.h (unless it had already been
  97 // defined before) and shows us what common control features are available
  98 // during the compile time (it doesn't mean that they will be available during
  99 // the run-time, use GetComCtl32Version() to test for them!). The possible
 100 // values are:
 101 //
 102 // 0x0200     for comctl32.dll 4.00 shipped with Win95/NT 4.0
 103 // 0x0300                      4.70              IE 3.x
 104 // 0x0400                      4.71              IE 4.0
 105 // 0x0401                      4.72              IE 4.01 and Win98
 106 // 0x0500                      5.00              IE 5.x and NT 5.0 (Win2000)
 107
 108 #ifndef _WIN32_IE
 109     // minimal set of features by default
 110     #define _WIN32_IE 0x0200
 111 #endif
 112
 113 #if _WIN32_IE >= 0x0300
 114     #include <shlwapi.h>
 115 #endif
 116
 117 // ---------------------------------------------------------------------------
 118 // global variables
 119 // ---------------------------------------------------------------------------
 120
 121 extern wxChar *wxBuffer;
 122 extern wxChar *wxOsVersion;
 123 extern wxList *wxWinHandleList;
 124 extern wxList WXDLLEXPORT wxPendingDelete;
 125 extern void wxSetKeyboardHook(bool doIt);
 126 extern wxCursor *g_globalCursor;
 127
 128 MSG s_currentMsg;
 129 wxApp *wxTheApp = NULL;
 130
 131 // FIXME why not const? and not static?
 132
 133 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 134 //     with NR suffix - wxWindow::MSWCreate() supposes this
 135 wxChar wxFrameClassName[]         = wxT("wxFrameClass");
 136 wxChar wxFrameClassNameNoRedraw[] = wxT("wxFrameClassNR");
 137 wxChar wxMDIFrameClassName[]      = wxT("wxMDIFrameClass");
 138 wxChar wxMDIFrameClassNameNoRedraw[] = wxT("wxMDIFrameClassNR");
 139 wxChar wxMDIChildFrameClassName[] = wxT("wxMDIChildFrameClass");
 140 wxChar wxMDIChildFrameClassNameNoRedraw[] = wxT("wxMDIChildFrameClassNR");
 141 wxChar wxPanelClassName[]         = wxT("wxPanelClass");
 142 wxChar wxCanvasClassName[]        = wxT("wxCanvasClass");
 143
 144 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 145 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 146 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 147
 148 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 149 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 150 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 151
 152 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 153
 154 LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 155
 156 #if wxUSE_RICHEDIT
 157     // the handle to richedit DLL and the version of the DLL loaded
 158     static HINSTANCE gs_hRichEdit = (HINSTANCE)NULL;
 159     static int gs_verRichEdit = -1;
 160 #endif
 161
 162 // ===========================================================================
 163 // implementation
 164 // ===========================================================================
 165
 166 // ---------------------------------------------------------------------------
 167 // wxApp
 168 // ---------------------------------------------------------------------------
 169
 170     IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 171
 172     BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 173         EVT_IDLE(wxApp::OnIdle)
 174         EVT_END_SESSION(wxApp::OnEndSession)
 175         EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 176     END_EVENT_TABLE()
 177
 178 //// Initialize
 179 bool wxApp::Initialize()
 180 {
 181     // Some people may wish to use this, but
 182     // probably it shouldn't be here by default.
 183 #ifdef __WXDEBUG__
 184     //    wxRedirectIOToConsole();
 185 #endif
 186
 187     wxBuffer = new wxChar[1500]; // FIXME
 188
 189     wxClassInfo::InitializeClasses();
 190
 191 #if wxUSE_RESOURCES
 192     wxGetResource(wxT("wxWindows"), wxT("OsVersion"), &wxOsVersion);
 193 #endif
 194
 195 #if wxUSE_THREADS
 196     wxPendingEventsLocker = new wxCriticalSection;
 197 #endif
 198
 199     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 200     wxTheColourDatabase->Initialize();
 201
 202     wxInitializeStockLists();
 203     wxInitializeStockObjects();
 204
 205 #if wxUSE_WX_RESOURCES
 206     wxInitializeResourceSystem();
 207 #endif
 208
 209     wxBitmap::InitStandardHandlers();
 210
 211 #if defined(__WIN95__)
 212     InitCommonControls();
 213
 214 #endif // __WIN95__
 215
 216 #if wxUSE_OLE
 217
 218 #ifdef __WIN16__
 219     // for OLE, enlarge message queue to be as large as possible
 220     int iMsg = 96;
 221     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 222         ;
 223 #endif // Win16
 224     // we need to initialize OLE library
 225     if ( FAILED(::OleInitialize(NULL)) )
 226         wxLogError(_("Cannot initialize OLE"));
 227 #endif // wxUSE_OLE
 228
 229 #if wxUSE_CTL3D
 230     if (!Ctl3dRegister(wxhInstance))
 231         wxLogError(wxT("Cannot register CTL3D"));
 232
 233     Ctl3dAutoSubclass(wxhInstance);
 234 #endif
 235
 236     g_globalCursor = new wxCursor;
 237
 238     // VZ: these icons are not in wx.rc anyhow (but should they?)!
 239 #if 0
 240     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
 241     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
 242     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 243
 244     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
 245     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
 246     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
 247 #endif // 0
 248
 249     RegisterWindowClasses();
 250
 251     // Create the brush for disabling bitmap buttons
 252
 253     LOGBRUSH lb;
 254     lb.lbStyle = BS_PATTERN;
 255     lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
 256     if ( lb.lbHatch )
 257     {
 258         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
 259         ::DeleteObject( (HGDIOBJ)lb.lbHatch );
 260     }
 261     //else: wxWindows resources are probably not linked in
 262
 263 #if wxUSE_PENWINDOWS
 264     wxRegisterPenWin();
 265 #endif
 266
 267     wxWinHandleList = new wxList(wxKEY_INTEGER);
 268
 269     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 270     // PLEASE DO NOT ALTER THIS.
 271 #if defined(__VISUALC__) && !defined(WXMAKINGDLL)
 272     extern char wxDummyChar;
 273     if (wxDummyChar) wxDummyChar++;
 274 #endif
 275
 276     wxSetKeyboardHook(TRUE);
 277
 278     wxModule::RegisterModules();
 279     if (!wxModule::InitializeModules())
 280         return FALSE;
 281     return TRUE;
 282 }
 283
 284 // ---------------------------------------------------------------------------
 285 // RegisterWindowClasses
 286 // ---------------------------------------------------------------------------
 287
 288 // TODO we should only register classes really used by the app. For this it
 289 //      would be enough to just delay the class registration until an attempt
 290 //      to create a window of this class is made.
 291 bool wxApp::RegisterWindowClasses()
 292 {
 293     WNDCLASS wndclass;
 294
 295     // for each class we register one with CS_(V|H)REDRAW style and one
 296     // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
 297     static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 298     static const long styleNoRedraw = CS_DBLCLKS;
 299
 300     // the fields which are common to all classes
 301     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 302     wndclass.cbClsExtra    = 0;
 303     wndclass.cbWndExtra    = sizeof( DWORD ); // VZ: what is this DWORD used for?
 304     wndclass.hInstance     = wxhInstance;
 305     wndclass.hIcon         = (HICON) NULL;
 306     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 307     wndclass.lpszMenuName  = NULL;
 308
 309     // Register the frame window class.
 310     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
 311     wndclass.lpszClassName = wxFrameClassName;
 312     wndclass.style         = styleNormal;
 313
 314     if ( !RegisterClass(&wndclass) )
 315     {
 316         wxLogLastError("RegisterClass(frame)");
 317
 318         return FALSE;
 319     }
 320
 321     // "no redraw" frame
 322     wndclass.lpszClassName = wxFrameClassNameNoRedraw;
 323     wndclass.style         = styleNoRedraw;
 324
 325     if ( !RegisterClass(&wndclass) )
 326     {
 327         wxLogLastError("RegisterClass(no redraw frame)");
 328
 329         return FALSE;
 330     }
 331
 332     // Register the MDI frame window class.
 333     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
 334     wndclass.lpszClassName = wxMDIFrameClassName;
 335     wndclass.style         = styleNormal;
 336
 337     if ( !RegisterClass(&wndclass) )
 338     {
 339         wxLogLastError("RegisterClass(MDI parent)");
 340
 341         return FALSE;
 342     }
 343
 344     // "no redraw" MDI frame
 345     wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
 346     wndclass.style         = styleNoRedraw;
 347
 348     if ( !RegisterClass(&wndclass) )
 349     {
 350         wxLogLastError("RegisterClass(no redraw MDI parent frame)");
 351
 352         return FALSE;
 353     }
 354
 355     // Register the MDI child frame window class.
 356     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 357     wndclass.lpszClassName = wxMDIChildFrameClassName;
 358     wndclass.style         = styleNormal;
 359
 360     if ( !RegisterClass(&wndclass) )
 361     {
 362         wxLogLastError("RegisterClass(MDI child)");
 363
 364         return FALSE;
 365     }
 366
 367     // "no redraw" MDI child frame
 368     wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
 369     wndclass.style         = styleNoRedraw;
 370
 371     if ( !RegisterClass(&wndclass) )
 372     {
 373         wxLogLastError("RegisterClass(no redraw MDI child)");
 374
 375         return FALSE;
 376     }
 377
 378     // Register the panel window class.
 379     wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 380     wndclass.lpszClassName = wxPanelClassName;
 381     wndclass.style         = styleNormal;
 382
 383     if ( !RegisterClass(&wndclass) )
 384     {
 385         wxLogLastError("RegisterClass(panel)");
 386
 387         return FALSE;
 388     }
 389
 390     // Register the canvas and textsubwindow class name
 391     wndclass.hbrBackground = (HBRUSH)NULL;
 392     wndclass.lpszClassName = wxCanvasClassName;
 393
 394     if ( !RegisterClass(&wndclass) )
 395     {
 396         wxLogLastError("RegisterClass(canvas)");
 397
 398         return FALSE;
 399     }
 400
 401     return TRUE;
 402 }
 403
 404 // ---------------------------------------------------------------------------
 405 // Convert Windows to argc, argv style
 406 // ---------------------------------------------------------------------------
 407
 408 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 409 {
 410     wxStringList args;
 411
 412     wxString cmdLine(lpCmdLine);
 413     int count = 0;
 414
 415     // Get application name
 416     wxChar name[260]; // 260 is MAX_PATH value from windef.h
 417     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 418
 419     args.Add(name);
 420     count++;
 421
 422     wxStrcpy(name, wxFileNameFromPath(name));
 423     wxStripExtension(name);
 424     wxTheApp->SetAppName(name);
 425
 426     // Break up string
 427     // Treat strings enclosed in double-quotes as single arguments
 428     int i = 0;
 429     int len = cmdLine.Length();
 430     while (i < len)
 431     {
 432         // Skip whitespace
 433         while ((i < len) && wxIsspace(cmdLine.GetChar(i)))
 434             i ++;
 435
 436         if (i < len)
 437         {
 438             if (cmdLine.GetChar(i) == wxT('"')) // We found the start of a string
 439             {
 440                 i ++;
 441                 int first = i;
 442                 while ((i < len) && (cmdLine.GetChar(i) != wxT('"')))
 443                     i ++;
 444
 445                 wxString arg(cmdLine.Mid(first, (i - first)));
 446
 447                 args.Add(arg);
 448                 count ++;
 449
 450                 if (i < len)
 451                     i ++; // Skip past 2nd quote
 452             }
 453             else // Unquoted argument
 454             {
 455                 int first = i;
 456                 while ((i < len) && !wxIsspace(cmdLine.GetChar(i)))
 457                     i ++;
 458
 459                 wxString arg(cmdLine.Mid(first, (i - first)));
 460
 461                 args.Add(arg);
 462                 count ++;
 463             }
 464         }
 465     }
 466
 467     wxTheApp->argv = new wxChar*[count + 1];
 468     for (i = 0; i < count; i++)
 469     {
 470         wxString arg(args[i]);
 471         wxTheApp->argv[i] = copystring((const wxChar*)arg);
 472     }
 473     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 474     wxTheApp->argc = count;
 475 }
 476
 477 //// Cleans up any wxWindows internal structures left lying around
 478
 479 void wxApp::CleanUp()
 480 {
 481     //// COMMON CLEANUP
 482
 483 #if wxUSE_LOG
 484     // flush the logged messages if any and install a 'safer' log target: the
 485     // default one (wxLogGui) can't be used after the resources are freed just
 486     // below and the user suppliedo ne might be even more unsafe (using any
 487     // wxWindows GUI function is unsafe starting from now)
 488     wxLog::DontCreateOnDemand();
 489
 490     // this will flush the old messages if any
 491     delete wxLog::SetActiveTarget(new wxLogStderr);
 492 #endif // wxUSE_LOG
 493
 494     // One last chance for pending objects to be cleaned up
 495     wxTheApp->DeletePendingObjects();
 496
 497     wxModule::CleanUpModules();
 498
 499 #if wxUSE_WX_RESOURCES
 500     wxCleanUpResourceSystem();
 501
 502     //  wxDefaultResourceTable->ClearTable();
 503 #endif
 504
 505     // Indicate that the cursor can be freed, so that cursor won't be deleted
 506     // by deleting the bitmap list before g_globalCursor goes out of scope
 507     // (double deletion of the cursor).
 508     wxSetCursor(wxNullCursor);
 509     delete g_globalCursor;
 510     g_globalCursor = NULL;
 511
 512     wxDeleteStockObjects();
 513
 514     // Destroy all GDI lists, etc.
 515     wxDeleteStockLists();
 516
 517     delete wxTheColourDatabase;
 518     wxTheColourDatabase = NULL;
 519
 520     wxBitmap::CleanUpHandlers();
 521
 522     delete[] wxBuffer;
 523     wxBuffer = NULL;
 524
 525     //// WINDOWS-SPECIFIC CLEANUP
 526
 527     wxSetKeyboardHook(FALSE);
 528
 529 #if wxUSE_RICHEDIT
 530     if (gs_hRichEdit != (HINSTANCE) NULL)
 531         FreeLibrary(gs_hRichEdit);
 532 #endif
 533
 534 #if wxUSE_PENWINDOWS
 535     wxCleanUpPenWin();
 536 #endif
 537
 538     if (wxSTD_FRAME_ICON)
 539         DestroyIcon(wxSTD_FRAME_ICON);
 540     if (wxSTD_MDICHILDFRAME_ICON)
 541         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 542     if (wxSTD_MDIPARENTFRAME_ICON)
 543         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 544
 545     if (wxDEFAULT_FRAME_ICON)
 546         DestroyIcon(wxDEFAULT_FRAME_ICON);
 547     if (wxDEFAULT_MDICHILDFRAME_ICON)
 548         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 549     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 550         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 551
 552     if ( wxDisableButtonBrush )
 553         ::DeleteObject( wxDisableButtonBrush );
 554
 555 #if wxUSE_OLE
 556     ::OleUninitialize();
 557 #endif
 558
 559 #if wxUSE_CTL3D
 560     Ctl3dUnregister(wxhInstance);
 561 #endif
 562
 563     if (wxWinHandleList)
 564         delete wxWinHandleList;
 565
 566     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 567     // create a module for that as it's part of the core.
 568     delete wxPendingEvents;
 569 #if wxUSE_THREADS
 570     delete wxPendingEventsLocker;
 571     // If we don't do the following, we get an apparent memory leak.
 572     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 573 #endif
 574
 575     wxClassInfo::CleanUpClasses();
 576
 577     delete wxTheApp;
 578     wxTheApp = NULL;
 579
 580 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 581     // At this point we want to check if there are any memory
 582     // blocks that aren't part of the wxDebugContext itself,
 583     // as a special case. Then when dumping we need to ignore
 584     // wxDebugContext, too.
 585     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 586     {
 587         wxLogDebug(wxT("There were memory leaks."));
 588         wxDebugContext::Dump();
 589         wxDebugContext::PrintStatistics();
 590     }
 591     //  wxDebugContext::SetStream(NULL, NULL);
 592 #endif
 593
 594 #if wxUSE_LOG
 595     // do it as the very last thing because everything else can log messages
 596     delete wxLog::SetActiveTarget(NULL);
 597 #endif // wxUSE_LOG
 598 }
 599
 600 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 601
 602 // temporarily disable this warning which would be generated in release builds
 603 // because of __try
 604 #ifdef __VISUALC__
 605     #pragma warning(disable: 4715) // not all control paths return a value
 606 #endif // Visual C++
 607
 608 //// Main wxWindows entry point
 609 int wxEntry(WXHINSTANCE hInstance,
 610             WXHINSTANCE WXUNUSED(hPrevInstance),
 611             char *lpCmdLine,
 612             int nCmdShow,
 613             bool enterLoop)
 614 {
 615     // do check for memory leaks on program exit
 616     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 617     //  deallocated memory which may be used to simulate low-memory condition)
 618     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 619 #ifdef __MWERKS__
 620 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 621     // This seems to be necessary since there are 'rogue'
 622     // objects present at this point (perhaps global objects?)
 623     // Setting a checkpoint will ignore them as far as the
 624     // memory checking facility is concerned.
 625     // Of course you may argue that memory allocated in globals should be
 626     // checked, but this is a reasonable compromise.
 627     wxDebugContext::SetCheckpoint();
 628 #endif
 629 #endif
 630     // take everything into a try-except block in release build
 631     // FIXME other compilers must support Win32 SEH (structured exception
 632     //       handling) too, just find the appropriate keyword in their docs!
 633     //       Please note that it's _not_ the same as C++ exceptions!
 634 #if !defined(__WXDEBUG__) && defined(__VISUALC__)
 635     #define CATCH_PROGRAM_EXCEPTIONS
 636
 637     __try {
 638 #else
 639     #undef  CATCH_PROGRAM_EXCEPTIONS
 640 #endif
 641         wxhInstance = (HINSTANCE) hInstance;
 642
 643         if (!wxApp::Initialize())
 644             return 0;
 645
 646         // create the application object or ensure that one already exists
 647         if (!wxTheApp)
 648         {
 649             // The app may have declared a global application object, but we recommend
 650             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 651             // function for delayed, dynamic app object construction.
 652             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 653                          wxT("No initializer - use IMPLEMENT_APP macro.") );
 654
 655             wxTheApp = (*wxApp::GetInitializerFunction()) ();
 656         }
 657
 658         wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 659
 660         // save the WinMain() parameters
 661         wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 662         wxTheApp->m_nCmdShow = nCmdShow;
 663
 664         // GUI-specific initialisation. In fact on Windows we don't have any,
 665         // but this call is provided for compatibility across platforms.
 666         wxTheApp->OnInitGui();
 667
 668         // We really don't want timestamps by default, because it means
 669         // we can't simply double-click on the error message and get to that
 670         // line in the source. So VC++ at least, let's have a sensible default.
 671 #ifdef __VISUALC__
 672         wxLog::SetTimestamp(NULL);
 673 #endif
 674
 675         int retValue = 0;
 676
 677         if ( wxTheApp->OnInit() )
 678         {
 679             if ( enterLoop )
 680             {
 681                 retValue = wxTheApp->OnRun();
 682             }
 683             else
 684                 // We want to initialize, but not run or exit immediately.
 685                 return 1;
 686         }
 687         //else: app initialization failed, so we skipped OnRun()
 688
 689         wxWindow *topWindow = wxTheApp->GetTopWindow();
 690         if ( topWindow )
 691         {
 692             // Forcibly delete the window.
 693             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 694                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 695             {
 696                 topWindow->Close(TRUE);
 697                 wxTheApp->DeletePendingObjects();
 698             }
 699             else
 700             {
 701                 delete topWindow;
 702                 wxTheApp->SetTopWindow(NULL);
 703             }
 704         }
 705
 706         wxTheApp->OnExit();
 707
 708         wxApp::CleanUp();
 709
 710         return retValue;
 711
 712 #ifdef CATCH_PROGRAM_EXCEPTIONS
 713     }
 714     __except ( EXCEPTION_EXECUTE_HANDLER ) {
 715         /*
 716            if ( wxTheApp )
 717            wxTheApp->OnFatalException();
 718          */
 719
 720         // using wxLog would be unsafe here
 721         ::MessageBox(NULL,
 722                      _("Unrecoverable program error detected: "
 723                      " the application will terminate."),
 724                      _("Fatal Error"),
 725                      MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 726
 727         ::ExitProcess(3); // the same exit code as abort()
 728
 729         // NOTREACHED
 730     }
 731 #endif // CATCH_PROGRAM_EXCEPTIONS
 732 }
 733
 734 // restore warning state
 735 #ifdef __VISUALC__
 736     #pragma warning(default: 4715) // not all control paths return a value
 737 #endif // Visual C++
 738
 739 #else /*  _WINDLL  */
 740
 741 //// Entry point for DLLs
 742
 743 int wxEntry(WXHINSTANCE hInstance)
 744 {
 745     wxhInstance = (HINSTANCE) hInstance;
 746     wxApp::Initialize();
 747
 748     // The app may have declared a global application object, but we recommend
 749     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 750     // for delayed, dynamic app object construction.
 751     if (!wxTheApp)
 752     {
 753         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 754                      "No initializer - use IMPLEMENT_APP macro." );
 755
 756         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 757     }
 758
 759     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 760
 761     wxTheApp->argc = 0;
 762     wxTheApp->argv = NULL;
 763
 764     wxTheApp->OnInitGui();
 765
 766     wxTheApp->OnInit();
 767
 768     wxWindow *topWindow = wxTheApp->GetTopWindow();
 769     if ( topWindow && topWindow->GetHWND())
 770     {
 771         topWindow->Show(TRUE);
 772     }
 773
 774     return 1;
 775 }
 776 #endif // _WINDLL
 777
 778 //// Static member initialization
 779
 780 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 781
 782 wxApp::wxApp()
 783 {
 784     m_topWindow = NULL;
 785     wxTheApp = this;
 786     m_wantDebugOutput = TRUE;
 787
 788     argc = 0;
 789     argv = NULL;
 790     m_printMode = wxPRINT_WINDOWS;
 791     m_exitOnFrameDelete = TRUE;
 792     m_auto3D = TRUE;
 793 }
 794
 795 wxApp::~wxApp()
 796 {
 797     // Delete command-line args
 798     int i;
 799     for (i = 0; i < argc; i++)
 800     {
 801         delete[] argv[i];
 802     }
 803     delete[] argv;
 804 }
 805
 806 bool wxApp::Initialized()
 807 {
 808 #ifndef _WINDLL
 809     if (GetTopWindow())
 810         return TRUE;
 811     else
 812         return FALSE;
 813 #endif
 814 #ifdef _WINDLL // Assume initialized if DLL (no way of telling)
 815     return TRUE;
 816 #endif
 817 }
 818
 819 /*
 820  * Get and process a message, returning FALSE if WM_QUIT
 821  * received (and also set the flag telling the app to exit the main loop)
 822  *
 823  */
 824 bool wxApp::DoMessage()
 825 {
 826     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 827     if ( rc == 0 )
 828     {
 829         // got WM_QUIT
 830         m_keepGoing = FALSE;
 831
 832         return FALSE;
 833     }
 834     else if ( rc == -1 )
 835     {
 836         // should never happen, but let's test for it nevertheless
 837         wxLogLastError("GetMessage");
 838     }
 839     else
 840     {
 841 #if wxUSE_THREADS
 842         wxASSERT_MSG( wxThread::IsMain(),
 843                       wxT("only the main thread can process Windows messages") );
 844
 845         static bool s_hadGuiLock = TRUE;
 846         static wxMsgArray s_aSavedMessages;
 847
 848         // if a secondary thread owns is doing GUI calls, save all messages for
 849         // later processing - we can't process them right now because it will
 850         // lead to recursive library calls (and we're not reentrant)
 851         if ( !wxGuiOwnedByMainThread() )
 852         {
 853             s_hadGuiLock = FALSE;
 854
 855             // leave out WM_COMMAND messages: too dangerous, sometimes
 856             // the message will be processed twice
 857             if ( !wxIsWaitingForThread() ||
 858                     s_currentMsg.message != WM_COMMAND )
 859             {
 860                 s_aSavedMessages.Add(s_currentMsg);
 861             }
 862
 863             return TRUE;
 864         }
 865         else
 866         {
 867             // have we just regained the GUI lock? if so, post all of the saved
 868             // messages
 869             //
 870             // FIXME of course, it's not _exactly_ the same as processing the
 871             //       messages normally - expect some things to break...
 872             if ( !s_hadGuiLock )
 873             {
 874                 s_hadGuiLock = TRUE;
 875
 876                 size_t count = s_aSavedMessages.Count();
 877                 for ( size_t n = 0; n < count; n++ )
 878                 {
 879                     MSG& msg = s_aSavedMessages[n];
 880
 881                     if ( !ProcessMessage((WXMSG *)&msg) )
 882                     {
 883                         ::TranslateMessage(&msg);
 884                         ::DispatchMessage(&msg);
 885                     }
 886                 }
 887
 888                 s_aSavedMessages.Empty();
 889             }
 890         }
 891 #endif // wxUSE_THREADS
 892
 893         // Process the message
 894         if ( !ProcessMessage((WXMSG *)&s_currentMsg) )
 895         {
 896             ::TranslateMessage(&s_currentMsg);
 897             ::DispatchMessage(&s_currentMsg);
 898         }
 899     }
 900
 901     return TRUE;
 902 }
 903
 904 /*
 905  * Keep trying to process messages until WM_QUIT
 906  * received.
 907  *
 908  * If there are messages to be processed, they will all be
 909  * processed and OnIdle will not be called.
 910  * When there are no more messages, OnIdle is called.
 911  * If OnIdle requests more time,
 912  * it will be repeatedly called so long as there are no pending messages.
 913  * A 'feature' of this is that once OnIdle has decided that no more processing
 914  * is required, then it won't get processing time until further messages
 915  * are processed (it'll sit in DoMessage).
 916  */
 917
 918 int wxApp::MainLoop()
 919 {
 920     m_keepGoing = TRUE;
 921
 922     while ( m_keepGoing )
 923     {
 924 #if wxUSE_THREADS
 925         wxMutexGuiLeaveOrEnter();
 926 #endif // wxUSE_THREADS
 927
 928         while ( !::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
 929                 ProcessIdle() )
 930         {
 931         }
 932
 933
 934         DoMessage();
 935     }
 936
 937     return s_currentMsg.wParam;
 938 }
 939
 940 // Returns TRUE if more time is needed.
 941 bool wxApp::ProcessIdle()
 942 {
 943     wxIdleEvent event;
 944     event.SetEventObject(this);
 945     ProcessEvent(event);
 946
 947     return event.MoreRequested();
 948 }
 949
 950 void wxApp::ExitMainLoop()
 951 {
 952     m_keepGoing = FALSE;
 953 }
 954
 955 bool wxApp::Pending()
 956 {
 957     return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0);
 958 }
 959
 960 void wxApp::Dispatch()
 961 {
 962     DoMessage();
 963 }
 964
 965 /*
 966  * Give all windows a chance to preprocess
 967  * the message. Some may have accelerator tables, or have
 968  * MDI complications.
 969  */
 970
 971 bool wxApp::ProcessMessage(WXMSG *wxmsg)
 972 {
 973     MSG *msg = (MSG *)wxmsg;
 974     HWND hWnd = msg->hwnd;
 975     wxWindow *wndThis = wxFindWinFromHandle((WXHWND)hWnd), *wnd;
 976
 977     // for some composite controls (like a combobox), wndThis might be NULL
 978     // because the subcontrol is not a wxWindow, but only the control itself
 979     // is - try to catch this case
 980     while ( hWnd && !wndThis )
 981     {
 982         hWnd = ::GetParent(hWnd);
 983         wndThis = wxFindWinFromHandle((WXHWND)hWnd);
 984     }
 985
 986     // Try translations first; find the youngest window with
 987     // a translation table.
 988     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 989     {
 990         if ( wnd->MSWTranslateMessage(wxmsg) )
 991             return TRUE;
 992     }
 993
 994     // Anyone for a non-translation message? Try youngest descendants first.
 995     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 996     {
 997         if ( wnd->MSWProcessMessage(wxmsg) )
 998             return TRUE;
 999     }
1000
1001     return FALSE;
1002 }
1003
1004 void wxApp::OnIdle(wxIdleEvent& event)
1005 {
1006     static bool s_inOnIdle = FALSE;
1007
1008     // Avoid recursion (via ProcessEvent default case)
1009     if ( s_inOnIdle )
1010         return;
1011
1012     s_inOnIdle = TRUE;
1013
1014     // 'Garbage' collection of windows deleted with Close().
1015     DeletePendingObjects();
1016
1017 #if wxUSE_LOG
1018     // flush the logged messages if any
1019     wxLog *pLog = wxLog::GetActiveTarget();
1020     if ( pLog != NULL && pLog->HasPendingMessages() )
1021         pLog->Flush();
1022 #endif // wxUSE_LOG
1023
1024     // Send OnIdle events to all windows
1025     if ( SendIdleEvents() )
1026     {
1027         // SendIdleEvents() returns TRUE if at least one window requested more
1028         // idle events
1029         event.RequestMore(TRUE);
1030     }
1031
1032     // If they are pending events, we must process them: pending events are
1033     // either events to the threads other than main or events posted with
1034     // wxPostEvent() functions
1035     ProcessPendingEvents();
1036
1037     s_inOnIdle = FALSE;
1038 }
1039
1040 // Send idle event to all top-level windows
1041 bool wxApp::SendIdleEvents()
1042 {
1043     bool needMore = FALSE;
1044
1045     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1046     while (node)
1047     {
1048         wxWindow* win = node->GetData();
1049         if (SendIdleEvents(win))
1050             needMore = TRUE;
1051         node = node->GetNext();
1052     }
1053
1054     return needMore;
1055 }
1056
1057 // Send idle event to window and all subwindows
1058 bool wxApp::SendIdleEvents(wxWindow* win)
1059 {
1060     bool needMore = FALSE;
1061
1062     wxIdleEvent event;
1063     event.SetEventObject(win);
1064     win->GetEventHandler()->ProcessEvent(event);
1065
1066     if (event.MoreRequested())
1067         needMore = TRUE;
1068
1069     wxNode* node = win->GetChildren().First();
1070     while (node)
1071     {
1072         wxWindow* win = (wxWindow*) node->Data();
1073         if (SendIdleEvents(win))
1074             needMore = TRUE;
1075
1076         node = node->Next();
1077     }
1078     return needMore;
1079 }
1080
1081 void wxApp::DeletePendingObjects()
1082 {
1083     wxNode *node = wxPendingDelete.First();
1084     while (node)
1085     {
1086         wxObject *obj = (wxObject *)node->Data();
1087
1088         delete obj;
1089
1090         if (wxPendingDelete.Member(obj))
1091             delete node;
1092
1093         // Deleting one object may have deleted other pending
1094         // objects, so start from beginning of list again.
1095         node = wxPendingDelete.First();
1096     }
1097 }
1098
1099 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1100 {
1101     if (GetTopWindow())
1102         GetTopWindow()->Close(TRUE);
1103 }
1104
1105 // Default behaviour: close the application with prompts. The
1106 // user can veto the close, and therefore the end session.
1107 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1108 {
1109     if (GetTopWindow())
1110     {
1111         if (!GetTopWindow()->Close(!event.CanVeto()))
1112             event.Veto(TRUE);
1113     }
1114 }
1115
1116 #if wxUSE_RICHEDIT
1117
1118 /* static */
1119 bool wxApp::InitRichEdit(int version)
1120 {
1121     wxCHECK_MSG( version >= 1 && version <= 3, FALSE,
1122                  _T("incorrect richedit control version requested") );
1123
1124     if ( version <= gs_verRichEdit )
1125     {
1126         // we've already got this or better
1127         return TRUE;
1128     }
1129
1130     if ( gs_hRichEdit )
1131     {
1132         ::FreeLibrary(gs_hRichEdit);
1133     }
1134
1135     // always try load riched20.dll first - like this we won't have to reload
1136     // it later if we're first asked for RE 1 and then for RE 2 or 3
1137     wxString dllname = _T("riched20.dll");
1138     gs_hRichEdit = ::LoadLibrary(dllname);
1139     if ( !gs_hRichEdit && (version == 1) )
1140     {
1141         // fall back to RE 1
1142         dllname = _T("riched32.dll");
1143         gs_hRichEdit = ::LoadLibrary(dllname);
1144     }
1145
1146     if ( !gs_hRichEdit )
1147     {
1148         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
1149
1150         gs_verRichEdit = -1;
1151
1152         return FALSE;
1153     }
1154
1155     gs_verRichEdit = version;
1156
1157     return TRUE;
1158 }
1159
1160 #endif // wxUSE_RICHEDIT
1161
1162 /* static */
1163 int wxApp::GetComCtl32Version()
1164 {
1165     // cache the result
1166     static int s_verComCtl32 = -1;
1167
1168     wxCRIT_SECT_DECLARE(csComCtl32);
1169     wxCRIT_SECT_LOCKER(lock, csComCtl32);
1170
1171     if ( s_verComCtl32 == -1 )
1172     {
1173         // initally assume no comctl32.dll at all
1174         s_verComCtl32 = 0;
1175
1176         // do we have it?
1177         HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
1178
1179         // if so, then we can check for the version
1180         if ( hModuleComCtl32 )
1181         {
1182             // try to use DllGetVersion() if available in _headers_
1183             #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
1184                 DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
1185                     ::GetProcAddress(hModuleComCtl32, _T("DllGetVersion"));
1186                 if ( pfnDllGetVersion )
1187                 {
1188                     DLLVERSIONINFO dvi;
1189                     dvi.cbSize = sizeof(dvi);
1190
1191                     HRESULT hr = (*pfnDllGetVersion)(&dvi);
1192                     if ( FAILED(hr) )
1193                     {
1194                         wxLogApiError(_T("DllGetVersion"), hr);
1195                     }
1196                     else
1197                     {
1198                         // this is incompatible with _WIN32_IE values, but
1199                         // compatible with the other values returned by
1200                         // GetComCtl32Version()
1201                         s_verComCtl32 = 100*dvi.dwMajorVersion +
1202                                             dvi.dwMinorVersion;
1203                     }
1204                 }
1205             #endif
1206                 // DllGetVersion() unavailable either during compile or
1207                 // run-time, try to guess the version otherwise
1208                 if ( !s_verComCtl32 )
1209                 {
1210                     // InitCommonControlsEx is unique to 4.70 and later
1211                     FARPROC theProc = ::GetProcAddress
1212                                         (
1213                                          hModuleComCtl32,
1214                                          _T("InitCommonControlsEx")
1215                                         );
1216
1217                     if ( !theProc )
1218                     {
1219                         // not found, must be 4.00
1220                         s_verComCtl32 = 400;
1221                     }
1222                     else
1223                     {
1224                         // many symbols appeared in comctl32 4.71, could use
1225                         // any of them except may be DllInstall
1226                         theProc = ::GetProcAddress
1227                                     (
1228                                      hModuleComCtl32,
1229                                      _T("InitializeFlatSB")
1230                                     );
1231                         if ( !theProc )
1232                         {
1233                             // not found, must be 4.70
1234                             s_verComCtl32 = 470;
1235                         }
1236                         else
1237                         {
1238                             // found, must be 4.71
1239                             s_verComCtl32 = 471;
1240                         }
1241                     }
1242                 }
1243         }
1244     }
1245
1246     return s_verComCtl32;
1247 }
1248
1249 void wxExit()
1250 {
1251     wxLogError(_("Fatal error: exiting"));
1252
1253     wxApp::CleanUp();
1254 }
1255
1256 // Yield to incoming messages
1257 bool wxYield()
1258 {
1259     // we don't want to process WM_QUIT from here - it should be processed in
1260     // the main event loop in order to stop it
1261
1262     MSG msg;
1263     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1264             msg.message != WM_QUIT )
1265     {
1266         if ( !wxTheApp->DoMessage() )
1267             break;
1268     }
1269
1270     // If they are pending events, we must process them.
1271     wxTheApp->ProcessPendingEvents();
1272
1273     return TRUE;
1274 }
1275
1276 //-----------------------------------------------------------------------------
1277 // wxWakeUpIdle
1278 //-----------------------------------------------------------------------------
1279
1280 void wxWakeUpIdle()
1281 {
1282     // Send the top window a dummy message so idle handler processing will
1283     // start up again.  Doing it this way ensures that the idle handler
1284     // wakes up in the right thread (see also wxWakeUpMainThread() which does
1285     // the same for the main app thread only)
1286     wxWindow *topWindow = wxTheApp->GetTopWindow();
1287     if ( topWindow )
1288     {
1289         if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
1290         {
1291             // should never happen
1292             wxLogLastError("PostMessage(WM_NULL)");
1293         }
1294     }
1295 }
1296
1297 //-----------------------------------------------------------------------------
1298
1299 wxIcon
1300 wxApp::GetStdIcon(int which) const
1301 {
1302     switch(which)
1303     {
1304         case wxICON_INFORMATION:
1305             return wxIcon("wxICON_INFO");
1306
1307         case wxICON_QUESTION:
1308             return wxIcon("wxICON_QUESTION");
1309
1310         case wxICON_EXCLAMATION:
1311             return wxIcon("wxICON_WARNING");
1312
1313         default:
1314             wxFAIL_MSG(wxT("requested non existent standard icon"));
1315             // still fall through
1316
1317         case wxICON_HAND:
1318             return wxIcon("wxICON_ERROR");
1319     }
1320 }
1321
1322 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1323 // if in a separate file. So include it here to ensure it's linked.
1324 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__))
1325 #include "main.cpp"
1326 #endif