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 #if wxUSE_TOOLTIPS
  71     #include "wx/tooltip.h"
  72 #endif // wxUSE_TOOLTIPS
  73
  74 // OLE is used for drag-and-drop, clipboard, OLE Automation...
  75 #ifndef wxUSE_NORLANDER_HEADERS
  76 #if defined(__GNUWIN32__) || defined(__SC__) || defined(__SALFORDC__)
  77     #undef wxUSE_OLE
  78
  79     #define  wxUSE_OLE 0
  80 #endif // broken compilers
  81 #endif
  82
  83 #if wxUSE_OLE
  84     #include <ole2.h>
  85 #endif
  86
  87 #include <string.h>
  88 #include <ctype.h>
  89
  90 #if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
  91     #include <commctrl.h>
  92 #endif
  93
  94 #include "wx/msw/msvcrt.h"
  95
  96 // ----------------------------------------------------------------------------
  97 // conditional compilation
  98 // ----------------------------------------------------------------------------
  99
 100 // The macro _WIN32_IE is defined by commctrl.h (unless it had already been
 101 // defined before) and shows us what common control features are available
 102 // during the compile time (it doesn't mean that they will be available during
 103 // the run-time, use GetComCtl32Version() to test for them!). The possible
 104 // values are:
 105 //
 106 // 0x0200     for comctl32.dll 4.00 shipped with Win95/NT 4.0
 107 // 0x0300                      4.70              IE 3.x
 108 // 0x0400                      4.71              IE 4.0
 109 // 0x0401                      4.72              IE 4.01 and Win98
 110 // 0x0500                      5.00              IE 5.x and NT 5.0 (Win2000)
 111
 112 #ifndef _WIN32_IE
 113     // minimal set of features by default
 114     #define _WIN32_IE 0x0200
 115 #endif
 116
 117 #if _WIN32_IE >= 0x0300
 118     #include <shlwapi.h>
 119 #endif
 120
 121 // ---------------------------------------------------------------------------
 122 // global variables
 123 // ---------------------------------------------------------------------------
 124
 125 extern wxChar *wxBuffer;
 126 extern wxChar *wxOsVersion;
 127 extern wxList *wxWinHandleList;
 128 extern wxList WXDLLEXPORT wxPendingDelete;
 129 extern void wxSetKeyboardHook(bool doIt);
 130 extern wxCursor *g_globalCursor;
 131
 132 MSG s_currentMsg;
 133 wxApp *wxTheApp = NULL;
 134
 135 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 136 //     with NR suffix - wxWindow::MSWCreate() supposes this
 137 const wxChar *wxFrameClassName         = wxT("wxFrameClass");
 138 const wxChar *wxFrameClassNameNoRedraw = wxT("wxFrameClassNR");
 139 const wxChar *wxMDIFrameClassName      = wxT("wxMDIFrameClass");
 140 const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR");
 141 const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass");
 142 const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR");
 143 const wxChar *wxPanelClassName         = wxT("wxPanelClass");
 144 const wxChar *wxCanvasClassName        = wxT("wxCanvasClass");
 145
 146 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 147 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 148 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 149
 150 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 151 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 152 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 153
 154 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 155
 156 LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 157
 158 // ===========================================================================
 159 // implementation
 160 // ===========================================================================
 161
 162 // ---------------------------------------------------------------------------
 163 // wxApp
 164 // ---------------------------------------------------------------------------
 165
 166     IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 167
 168     BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 169         EVT_IDLE(wxApp::OnIdle)
 170         EVT_END_SESSION(wxApp::OnEndSession)
 171         EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 172     END_EVENT_TABLE()
 173
 174 //// Initialize
 175 bool wxApp::Initialize()
 176 {
 177     // Some people may wish to use this, but
 178     // probably it shouldn't be here by default.
 179 #ifdef __WXDEBUG__
 180     //    wxRedirectIOToConsole();
 181 #endif
 182
 183     wxBuffer = new wxChar[1500]; // FIXME
 184
 185     wxClassInfo::InitializeClasses();
 186
 187 #if wxUSE_RESOURCES
 188     wxGetResource(wxT("wxWindows"), wxT("OsVersion"), &wxOsVersion);
 189 #endif
 190
 191 #if wxUSE_THREADS
 192     wxPendingEventsLocker = new wxCriticalSection;
 193 #endif
 194
 195     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 196     wxTheColourDatabase->Initialize();
 197
 198     wxInitializeStockLists();
 199     wxInitializeStockObjects();
 200
 201 #if wxUSE_WX_RESOURCES
 202     wxInitializeResourceSystem();
 203 #endif
 204
 205     wxBitmap::InitStandardHandlers();
 206
 207 #if defined(__WIN95__)
 208     InitCommonControls();
 209
 210 #endif // __WIN95__
 211
 212 #if wxUSE_OLE
 213
 214 #ifdef __WIN16__
 215     // for OLE, enlarge message queue to be as large as possible
 216     int iMsg = 96;
 217     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 218         ;
 219 #endif // Win16
 220     // we need to initialize OLE library
 221     if ( FAILED(::OleInitialize(NULL)) )
 222         wxLogError(_("Cannot initialize OLE"));
 223 #endif // wxUSE_OLE
 224
 225 #if wxUSE_CTL3D
 226     if (!Ctl3dRegister(wxhInstance))
 227         wxLogError(wxT("Cannot register CTL3D"));
 228
 229     Ctl3dAutoSubclass(wxhInstance);
 230 #endif
 231
 232     g_globalCursor = new wxCursor;
 233
 234     // VZ: these icons are not in wx.rc anyhow (but should they?)!
 235 #if 0
 236     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
 237     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
 238     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 239
 240     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
 241     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
 242     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
 243 #endif // 0
 244
 245     RegisterWindowClasses();
 246
 247     // Create the brush for disabling bitmap buttons
 248
 249     LOGBRUSH lb;
 250     lb.lbStyle = BS_PATTERN;
 251     lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
 252     if ( lb.lbHatch )
 253     {
 254         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
 255         ::DeleteObject( (HGDIOBJ)lb.lbHatch );
 256     }
 257     //else: wxWindows resources are probably not linked in
 258
 259 #if wxUSE_PENWINDOWS
 260     wxRegisterPenWin();
 261 #endif
 262
 263     wxWinHandleList = new wxList(wxKEY_INTEGER);
 264
 265     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 266     // PLEASE DO NOT ALTER THIS.
 267 #if defined(__VISUALC__) && !defined(WXMAKINGDLL)
 268     extern char wxDummyChar;
 269     if (wxDummyChar) wxDummyChar++;
 270 #endif
 271
 272     wxSetKeyboardHook(TRUE);
 273
 274     wxModule::RegisterModules();
 275     if (!wxModule::InitializeModules())
 276         return FALSE;
 277     return TRUE;
 278 }
 279
 280 // ---------------------------------------------------------------------------
 281 // RegisterWindowClasses
 282 // ---------------------------------------------------------------------------
 283
 284 // TODO we should only register classes really used by the app. For this it
 285 //      would be enough to just delay the class registration until an attempt
 286 //      to create a window of this class is made.
 287 bool wxApp::RegisterWindowClasses()
 288 {
 289     WNDCLASS wndclass;
 290
 291     // for each class we register one with CS_(V|H)REDRAW style and one
 292     // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
 293     static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 294     static const long styleNoRedraw = CS_DBLCLKS;
 295
 296     // the fields which are common to all classes
 297     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 298     wndclass.cbClsExtra    = 0;
 299     wndclass.cbWndExtra    = sizeof( DWORD ); // VZ: what is this DWORD used for?
 300     wndclass.hInstance     = wxhInstance;
 301     wndclass.hIcon         = (HICON) NULL;
 302     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 303     wndclass.lpszMenuName  = NULL;
 304
 305     // Register the frame window class.
 306     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
 307     wndclass.lpszClassName = wxFrameClassName;
 308     wndclass.style         = styleNormal;
 309
 310     if ( !RegisterClass(&wndclass) )
 311     {
 312         wxLogLastError("RegisterClass(frame)");
 313
 314         return FALSE;
 315     }
 316
 317     // "no redraw" frame
 318     wndclass.lpszClassName = wxFrameClassNameNoRedraw;
 319     wndclass.style         = styleNoRedraw;
 320
 321     if ( !RegisterClass(&wndclass) )
 322     {
 323         wxLogLastError("RegisterClass(no redraw frame)");
 324
 325         return FALSE;
 326     }
 327
 328     // Register the MDI frame window class.
 329     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
 330     wndclass.lpszClassName = wxMDIFrameClassName;
 331     wndclass.style         = styleNormal;
 332
 333     if ( !RegisterClass(&wndclass) )
 334     {
 335         wxLogLastError("RegisterClass(MDI parent)");
 336
 337         return FALSE;
 338     }
 339
 340     // "no redraw" MDI frame
 341     wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
 342     wndclass.style         = styleNoRedraw;
 343
 344     if ( !RegisterClass(&wndclass) )
 345     {
 346         wxLogLastError("RegisterClass(no redraw MDI parent frame)");
 347
 348         return FALSE;
 349     }
 350
 351     // Register the MDI child frame window class.
 352     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 353     wndclass.lpszClassName = wxMDIChildFrameClassName;
 354     wndclass.style         = styleNormal;
 355
 356     if ( !RegisterClass(&wndclass) )
 357     {
 358         wxLogLastError("RegisterClass(MDI child)");
 359
 360         return FALSE;
 361     }
 362
 363     // "no redraw" MDI child frame
 364     wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
 365     wndclass.style         = styleNoRedraw;
 366
 367     if ( !RegisterClass(&wndclass) )
 368     {
 369         wxLogLastError("RegisterClass(no redraw MDI child)");
 370
 371         return FALSE;
 372     }
 373
 374     // Register the panel window class.
 375     wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 376     wndclass.lpszClassName = wxPanelClassName;
 377     wndclass.style         = styleNormal;
 378
 379     if ( !RegisterClass(&wndclass) )
 380     {
 381         wxLogLastError("RegisterClass(panel)");
 382
 383         return FALSE;
 384     }
 385
 386     // Register the canvas and textsubwindow class name
 387     wndclass.hbrBackground = (HBRUSH)NULL;
 388     wndclass.lpszClassName = wxCanvasClassName;
 389
 390     if ( !RegisterClass(&wndclass) )
 391     {
 392         wxLogLastError("RegisterClass(canvas)");
 393
 394         return FALSE;
 395     }
 396
 397     return TRUE;
 398 }
 399
 400 // ---------------------------------------------------------------------------
 401 // Convert Windows to argc, argv style
 402 // ---------------------------------------------------------------------------
 403
 404 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 405 {
 406     wxStringList args;
 407
 408     wxString cmdLine(lpCmdLine);
 409     int count = 0;
 410
 411     // Get application name
 412     wxChar name[260]; // 260 is MAX_PATH value from windef.h
 413     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 414
 415     args.Add(name);
 416     count++;
 417
 418     wxStrcpy(name, wxFileNameFromPath(name));
 419     wxStripExtension(name);
 420     wxTheApp->SetAppName(name);
 421
 422     // Break up string
 423     // Treat strings enclosed in double-quotes as single arguments
 424     int i = 0;
 425     int len = cmdLine.Length();
 426     while (i < len)
 427     {
 428         // Skip whitespace
 429         while ((i < len) && wxIsspace(cmdLine.GetChar(i)))
 430             i ++;
 431
 432         if (i < len)
 433         {
 434             if (cmdLine.GetChar(i) == wxT('"')) // We found the start of a string
 435             {
 436                 i ++;
 437                 int first = i;
 438                 while ((i < len) && (cmdLine.GetChar(i) != wxT('"')))
 439                     i ++;
 440
 441                 wxString arg(cmdLine.Mid(first, (i - first)));
 442
 443                 args.Add(arg);
 444                 count ++;
 445
 446                 if (i < len)
 447                     i ++; // Skip past 2nd quote
 448             }
 449             else // Unquoted argument
 450             {
 451                 int first = i;
 452                 while ((i < len) && !wxIsspace(cmdLine.GetChar(i)))
 453                     i ++;
 454
 455                 wxString arg(cmdLine.Mid(first, (i - first)));
 456
 457                 args.Add(arg);
 458                 count ++;
 459             }
 460         }
 461     }
 462
 463     wxTheApp->argv = new wxChar*[count + 1];
 464     for (i = 0; i < count; i++)
 465     {
 466         wxString arg(args[i]);
 467         wxTheApp->argv[i] = copystring((const wxChar*)arg);
 468     }
 469     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 470     wxTheApp->argc = count;
 471 }
 472
 473 //// Cleans up any wxWindows internal structures left lying around
 474
 475 void wxApp::CleanUp()
 476 {
 477     //// COMMON CLEANUP
 478
 479 #if wxUSE_LOG
 480     // flush the logged messages if any and install a 'safer' log target: the
 481     // default one (wxLogGui) can't be used after the resources are freed just
 482     // below and the user suppliedo ne might be even more unsafe (using any
 483     // wxWindows GUI function is unsafe starting from now)
 484     wxLog::DontCreateOnDemand();
 485
 486     // this will flush the old messages if any
 487     delete wxLog::SetActiveTarget(new wxLogStderr);
 488 #endif // wxUSE_LOG
 489
 490     // One last chance for pending objects to be cleaned up
 491     wxTheApp->DeletePendingObjects();
 492
 493     wxModule::CleanUpModules();
 494
 495 #if wxUSE_WX_RESOURCES
 496     wxCleanUpResourceSystem();
 497
 498     //  wxDefaultResourceTable->ClearTable();
 499 #endif
 500
 501     // Indicate that the cursor can be freed, so that cursor won't be deleted
 502     // by deleting the bitmap list before g_globalCursor goes out of scope
 503     // (double deletion of the cursor).
 504     wxSetCursor(wxNullCursor);
 505     delete g_globalCursor;
 506     g_globalCursor = NULL;
 507
 508     wxDeleteStockObjects();
 509
 510     // Destroy all GDI lists, etc.
 511     wxDeleteStockLists();
 512
 513     delete wxTheColourDatabase;
 514     wxTheColourDatabase = NULL;
 515
 516     wxBitmap::CleanUpHandlers();
 517
 518     delete[] wxBuffer;
 519     wxBuffer = NULL;
 520
 521     //// WINDOWS-SPECIFIC CLEANUP
 522
 523     wxSetKeyboardHook(FALSE);
 524
 525 #if wxUSE_PENWINDOWS
 526     wxCleanUpPenWin();
 527 #endif
 528
 529     if (wxSTD_FRAME_ICON)
 530         DestroyIcon(wxSTD_FRAME_ICON);
 531     if (wxSTD_MDICHILDFRAME_ICON)
 532         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 533     if (wxSTD_MDIPARENTFRAME_ICON)
 534         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 535
 536     if (wxDEFAULT_FRAME_ICON)
 537         DestroyIcon(wxDEFAULT_FRAME_ICON);
 538     if (wxDEFAULT_MDICHILDFRAME_ICON)
 539         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 540     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 541         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 542
 543     if ( wxDisableButtonBrush )
 544         ::DeleteObject( wxDisableButtonBrush );
 545
 546 #if wxUSE_OLE
 547     ::OleUninitialize();
 548 #endif
 549
 550 #if wxUSE_CTL3D
 551     Ctl3dUnregister(wxhInstance);
 552 #endif
 553
 554     if (wxWinHandleList)
 555         delete wxWinHandleList;
 556
 557     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 558     // create a module for that as it's part of the core.
 559     delete wxPendingEvents;
 560 #if wxUSE_THREADS
 561     delete wxPendingEventsLocker;
 562     // If we don't do the following, we get an apparent memory leak.
 563     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 564 #endif
 565
 566     wxClassInfo::CleanUpClasses();
 567
 568     delete wxTheApp;
 569     wxTheApp = NULL;
 570
 571 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 572     // At this point we want to check if there are any memory
 573     // blocks that aren't part of the wxDebugContext itself,
 574     // as a special case. Then when dumping we need to ignore
 575     // wxDebugContext, too.
 576     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 577     {
 578         wxLogDebug(wxT("There were memory leaks."));
 579         wxDebugContext::Dump();
 580         wxDebugContext::PrintStatistics();
 581     }
 582     //  wxDebugContext::SetStream(NULL, NULL);
 583 #endif
 584
 585 #if wxUSE_LOG
 586     // do it as the very last thing because everything else can log messages
 587     delete wxLog::SetActiveTarget(NULL);
 588 #endif // wxUSE_LOG
 589 }
 590
 591 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 592
 593 // temporarily disable this warning which would be generated in release builds
 594 // because of __try
 595 #ifdef __VISUALC__
 596     #pragma warning(disable: 4715) // not all control paths return a value
 597 #endif // Visual C++
 598
 599 //// Main wxWindows entry point
 600 int wxEntry(WXHINSTANCE hInstance,
 601             WXHINSTANCE WXUNUSED(hPrevInstance),
 602             char *lpCmdLine,
 603             int nCmdShow,
 604             bool enterLoop)
 605 {
 606     // do check for memory leaks on program exit
 607     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 608     //  deallocated memory which may be used to simulate low-memory condition)
 609     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 610 #ifdef __MWERKS__
 611 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 612     // This seems to be necessary since there are 'rogue'
 613     // objects present at this point (perhaps global objects?)
 614     // Setting a checkpoint will ignore them as far as the
 615     // memory checking facility is concerned.
 616     // Of course you may argue that memory allocated in globals should be
 617     // checked, but this is a reasonable compromise.
 618     wxDebugContext::SetCheckpoint();
 619 #endif
 620 #endif
 621     // take everything into a try-except block in release build
 622     // FIXME other compilers must support Win32 SEH (structured exception
 623     //       handling) too, just find the appropriate keyword in their docs!
 624     //       Please note that it's _not_ the same as C++ exceptions!
 625 #if !defined(__WXDEBUG__) && defined(__VISUALC__)
 626     #define CATCH_PROGRAM_EXCEPTIONS
 627
 628     __try {
 629 #else
 630     #undef  CATCH_PROGRAM_EXCEPTIONS
 631 #endif
 632         wxhInstance = (HINSTANCE) hInstance;
 633
 634         if (!wxApp::Initialize())
 635             return 0;
 636
 637         // create the application object or ensure that one already exists
 638         if (!wxTheApp)
 639         {
 640             // The app may have declared a global application object, but we recommend
 641             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 642             // function for delayed, dynamic app object construction.
 643             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 644                          wxT("No initializer - use IMPLEMENT_APP macro.") );
 645
 646             wxTheApp = (*wxApp::GetInitializerFunction()) ();
 647         }
 648
 649         wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 650
 651         // save the WinMain() parameters
 652         wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 653         wxTheApp->m_nCmdShow = nCmdShow;
 654
 655         // GUI-specific initialisation. In fact on Windows we don't have any,
 656         // but this call is provided for compatibility across platforms.
 657         wxTheApp->OnInitGui();
 658
 659         // We really don't want timestamps by default, because it means
 660         // we can't simply double-click on the error message and get to that
 661         // line in the source. So VC++ at least, let's have a sensible default.
 662 #ifdef __VISUALC__
 663         wxLog::SetTimestamp(NULL);
 664 #endif
 665
 666         int retValue = 0;
 667
 668         if ( wxTheApp->OnInit() )
 669         {
 670             if ( enterLoop )
 671             {
 672                 retValue = wxTheApp->OnRun();
 673             }
 674             else
 675                 // We want to initialize, but not run or exit immediately.
 676                 return 1;
 677         }
 678         //else: app initialization failed, so we skipped OnRun()
 679
 680         wxWindow *topWindow = wxTheApp->GetTopWindow();
 681         if ( topWindow )
 682         {
 683             // Forcibly delete the window.
 684             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 685                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 686             {
 687                 topWindow->Close(TRUE);
 688                 wxTheApp->DeletePendingObjects();
 689             }
 690             else
 691             {
 692                 delete topWindow;
 693                 wxTheApp->SetTopWindow(NULL);
 694             }
 695         }
 696
 697         wxTheApp->OnExit();
 698
 699         wxApp::CleanUp();
 700
 701         return retValue;
 702
 703 #ifdef CATCH_PROGRAM_EXCEPTIONS
 704     }
 705     __except ( EXCEPTION_EXECUTE_HANDLER ) {
 706         /*
 707            if ( wxTheApp )
 708            wxTheApp->OnFatalException();
 709          */
 710
 711         // using wxLog would be unsafe here
 712         ::MessageBox(NULL,
 713                      _("Unrecoverable program error detected: "
 714                      " the application will terminate."),
 715                      _("Fatal Error"),
 716                      MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 717
 718         ::ExitProcess(3); // the same exit code as abort()
 719
 720         // NOTREACHED
 721     }
 722 #endif // CATCH_PROGRAM_EXCEPTIONS
 723 }
 724
 725 // restore warning state
 726 #ifdef __VISUALC__
 727     #pragma warning(default: 4715) // not all control paths return a value
 728 #endif // Visual C++
 729
 730 #else /*  _WINDLL  */
 731
 732 //// Entry point for DLLs
 733
 734 int wxEntry(WXHINSTANCE hInstance)
 735 {
 736     wxhInstance = (HINSTANCE) hInstance;
 737     wxApp::Initialize();
 738
 739     // The app may have declared a global application object, but we recommend
 740     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 741     // for delayed, dynamic app object construction.
 742     if (!wxTheApp)
 743     {
 744         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 745                      "No initializer - use IMPLEMENT_APP macro." );
 746
 747         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 748     }
 749
 750     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 751
 752     wxTheApp->argc = 0;
 753     wxTheApp->argv = NULL;
 754
 755     wxTheApp->OnInitGui();
 756
 757     wxTheApp->OnInit();
 758
 759     wxWindow *topWindow = wxTheApp->GetTopWindow();
 760     if ( topWindow && topWindow->GetHWND())
 761     {
 762         topWindow->Show(TRUE);
 763     }
 764
 765     return 1;
 766 }
 767 #endif // _WINDLL
 768
 769 //// Static member initialization
 770
 771 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 772
 773 wxApp::wxApp()
 774 {
 775     m_topWindow = NULL;
 776     wxTheApp = this;
 777     m_wantDebugOutput = TRUE;
 778
 779     argc = 0;
 780     argv = NULL;
 781     m_printMode = wxPRINT_WINDOWS;
 782     m_exitOnFrameDelete = TRUE;
 783     m_auto3D = TRUE;
 784 }
 785
 786 wxApp::~wxApp()
 787 {
 788     // Delete command-line args
 789     int i;
 790     for (i = 0; i < argc; i++)
 791     {
 792         delete[] argv[i];
 793     }
 794     delete[] argv;
 795 }
 796
 797 bool wxApp::Initialized()
 798 {
 799 #ifndef _WINDLL
 800     if (GetTopWindow())
 801         return TRUE;
 802     else
 803         return FALSE;
 804 #endif
 805 #ifdef _WINDLL // Assume initialized if DLL (no way of telling)
 806     return TRUE;
 807 #endif
 808 }
 809
 810 /*
 811  * Get and process a message, returning FALSE if WM_QUIT
 812  * received (and also set the flag telling the app to exit the main loop)
 813  *
 814  */
 815 bool wxApp::DoMessage()
 816 {
 817     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 818     if ( rc == 0 )
 819     {
 820         // got WM_QUIT
 821         m_keepGoing = FALSE;
 822
 823         return FALSE;
 824     }
 825     else if ( rc == -1 )
 826     {
 827         // should never happen, but let's test for it nevertheless
 828         wxLogLastError("GetMessage");
 829     }
 830     else
 831     {
 832 #if wxUSE_THREADS
 833         wxASSERT_MSG( wxThread::IsMain(),
 834                       wxT("only the main thread can process Windows messages") );
 835
 836         static bool s_hadGuiLock = TRUE;
 837         static wxMsgArray s_aSavedMessages;
 838
 839         // if a secondary thread owns is doing GUI calls, save all messages for
 840         // later processing - we can't process them right now because it will
 841         // lead to recursive library calls (and we're not reentrant)
 842         if ( !wxGuiOwnedByMainThread() )
 843         {
 844             s_hadGuiLock = FALSE;
 845
 846             // leave out WM_COMMAND messages: too dangerous, sometimes
 847             // the message will be processed twice
 848             if ( !wxIsWaitingForThread() ||
 849                     s_currentMsg.message != WM_COMMAND )
 850             {
 851                 s_aSavedMessages.Add(s_currentMsg);
 852             }
 853
 854             return TRUE;
 855         }
 856         else
 857         {
 858             // have we just regained the GUI lock? if so, post all of the saved
 859             // messages
 860             //
 861             // FIXME of course, it's not _exactly_ the same as processing the
 862             //       messages normally - expect some things to break...
 863             if ( !s_hadGuiLock )
 864             {
 865                 s_hadGuiLock = TRUE;
 866
 867                 size_t count = s_aSavedMessages.Count();
 868                 for ( size_t n = 0; n < count; n++ )
 869                 {
 870                     MSG& msg = s_aSavedMessages[n];
 871
 872                     if ( !ProcessMessage((WXMSG *)&msg) )
 873                     {
 874                         ::TranslateMessage(&msg);
 875                         ::DispatchMessage(&msg);
 876                     }
 877                 }
 878
 879                 s_aSavedMessages.Empty();
 880             }
 881         }
 882 #endif // wxUSE_THREADS
 883
 884         // Process the message
 885         if ( !ProcessMessage((WXMSG *)&s_currentMsg) )
 886         {
 887             ::TranslateMessage(&s_currentMsg);
 888             ::DispatchMessage(&s_currentMsg);
 889         }
 890     }
 891
 892     return TRUE;
 893 }
 894
 895 /*
 896  * Keep trying to process messages until WM_QUIT
 897  * received.
 898  *
 899  * If there are messages to be processed, they will all be
 900  * processed and OnIdle will not be called.
 901  * When there are no more messages, OnIdle is called.
 902  * If OnIdle requests more time,
 903  * it will be repeatedly called so long as there are no pending messages.
 904  * A 'feature' of this is that once OnIdle has decided that no more processing
 905  * is required, then it won't get processing time until further messages
 906  * are processed (it'll sit in DoMessage).
 907  */
 908
 909 int wxApp::MainLoop()
 910 {
 911     m_keepGoing = TRUE;
 912
 913     while ( m_keepGoing )
 914     {
 915 #if wxUSE_THREADS
 916         wxMutexGuiLeaveOrEnter();
 917 #endif // wxUSE_THREADS
 918
 919         while ( !Pending() && ProcessIdle() )
 920             ;
 921
 922         // a message came or no more idle processing to do
 923         DoMessage();
 924     }
 925
 926     return s_currentMsg.wParam;
 927 }
 928
 929 // Returns TRUE if more time is needed.
 930 bool wxApp::ProcessIdle()
 931 {
 932     wxIdleEvent event;
 933     event.SetEventObject(this);
 934     ProcessEvent(event);
 935
 936     return event.MoreRequested();
 937 }
 938
 939 void wxApp::ExitMainLoop()
 940 {
 941     // VZ: why not ::PostQuitMessage()?
 942     m_keepGoing = FALSE;
 943 }
 944
 945 bool wxApp::Pending()
 946 {
 947     return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0;
 948 }
 949
 950 void wxApp::Dispatch()
 951 {
 952     DoMessage();
 953 }
 954
 955 /*
 956  * Give all windows a chance to preprocess
 957  * the message. Some may have accelerator tables, or have
 958  * MDI complications.
 959  */
 960
 961 bool wxApp::ProcessMessage(WXMSG *wxmsg)
 962 {
 963     MSG *msg = (MSG *)wxmsg;
 964     HWND hWnd = msg->hwnd;
 965     wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hWnd);
 966
 967 #if wxUSE_TOOLTIPS
 968     // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
 969     // popup the tooltip bubbles
 970     if ( wndThis && (msg->message == WM_MOUSEMOVE) )
 971     {
 972         wxToolTip *tt = wndThis->GetToolTip();
 973         if ( tt )
 974         {
 975             tt->RelayEvent(wxmsg);
 976         }
 977     }
 978 #endif // wxUSE_TOOLTIPS
 979
 980     // Try translations first; find the youngest window with
 981     // a translation table.
 982     wxWindow *wnd;
 983     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 984     {
 985         if ( wnd->MSWTranslateMessage(wxmsg) )
 986             return TRUE;
 987     }
 988
 989     // Anyone for a non-translation message? Try youngest descendants first.
 990     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 991     {
 992         if ( wnd->MSWProcessMessage(wxmsg) )
 993             return TRUE;
 994     }
 995
 996     return FALSE;
 997 }
 998
 999 void wxApp::OnIdle(wxIdleEvent& event)
1000 {
1001     static bool s_inOnIdle = FALSE;
1002
1003     // Avoid recursion (via ProcessEvent default case)
1004     if ( s_inOnIdle )
1005         return;
1006
1007     s_inOnIdle = TRUE;
1008
1009     // 'Garbage' collection of windows deleted with Close().
1010     DeletePendingObjects();
1011
1012 #if wxUSE_LOG
1013     // flush the logged messages if any
1014     wxLog *pLog = wxLog::GetActiveTarget();
1015     if ( pLog != NULL && pLog->HasPendingMessages() )
1016         pLog->Flush();
1017 #endif // wxUSE_LOG
1018
1019     // Send OnIdle events to all windows
1020     if ( SendIdleEvents() )
1021     {
1022         // SendIdleEvents() returns TRUE if at least one window requested more
1023         // idle events
1024         event.RequestMore(TRUE);
1025     }
1026
1027     // If they are pending events, we must process them: pending events are
1028     // either events to the threads other than main or events posted with
1029     // wxPostEvent() functions
1030     ProcessPendingEvents();
1031
1032     s_inOnIdle = FALSE;
1033 }
1034
1035 // Send idle event to all top-level windows
1036 bool wxApp::SendIdleEvents()
1037 {
1038     bool needMore = FALSE;
1039
1040     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1041     while (node)
1042     {
1043         wxWindow* win = node->GetData();
1044         if (SendIdleEvents(win))
1045             needMore = TRUE;
1046         node = node->GetNext();
1047     }
1048
1049     return needMore;
1050 }
1051
1052 // Send idle event to window and all subwindows
1053 bool wxApp::SendIdleEvents(wxWindow* win)
1054 {
1055     bool needMore = FALSE;
1056
1057     wxIdleEvent event;
1058     event.SetEventObject(win);
1059     win->GetEventHandler()->ProcessEvent(event);
1060
1061     if (event.MoreRequested())
1062         needMore = TRUE;
1063
1064     wxNode* node = win->GetChildren().First();
1065     while (node)
1066     {
1067         wxWindow* win = (wxWindow*) node->Data();
1068         if (SendIdleEvents(win))
1069             needMore = TRUE;
1070
1071         node = node->Next();
1072     }
1073     return needMore;
1074 }
1075
1076 void wxApp::DeletePendingObjects()
1077 {
1078     wxNode *node = wxPendingDelete.First();
1079     while (node)
1080     {
1081         wxObject *obj = (wxObject *)node->Data();
1082
1083         delete obj;
1084
1085         if (wxPendingDelete.Member(obj))
1086             delete node;
1087
1088         // Deleting one object may have deleted other pending
1089         // objects, so start from beginning of list again.
1090         node = wxPendingDelete.First();
1091     }
1092 }
1093
1094 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1095 {
1096     if (GetTopWindow())
1097         GetTopWindow()->Close(TRUE);
1098 }
1099
1100 // Default behaviour: close the application with prompts. The
1101 // user can veto the close, and therefore the end session.
1102 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1103 {
1104     if (GetTopWindow())
1105     {
1106         if (!GetTopWindow()->Close(!event.CanVeto()))
1107             event.Veto(TRUE);
1108     }
1109 }
1110
1111 /* static */
1112 int wxApp::GetComCtl32Version()
1113 {
1114     // cache the result
1115     static int s_verComCtl32 = -1;
1116
1117     wxCRIT_SECT_DECLARE(csComCtl32);
1118     wxCRIT_SECT_LOCKER(lock, csComCtl32);
1119
1120     if ( s_verComCtl32 == -1 )
1121     {
1122         // initally assume no comctl32.dll at all
1123         s_verComCtl32 = 0;
1124
1125         // do we have it?
1126         HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
1127
1128         // if so, then we can check for the version
1129         if ( hModuleComCtl32 )
1130         {
1131             // try to use DllGetVersion() if available in _headers_
1132             #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
1133                 DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
1134                     ::GetProcAddress(hModuleComCtl32, _T("DllGetVersion"));
1135                 if ( pfnDllGetVersion )
1136                 {
1137                     DLLVERSIONINFO dvi;
1138                     dvi.cbSize = sizeof(dvi);
1139
1140                     HRESULT hr = (*pfnDllGetVersion)(&dvi);
1141                     if ( FAILED(hr) )
1142                     {
1143                         wxLogApiError(_T("DllGetVersion"), hr);
1144                     }
1145                     else
1146                     {
1147                         // this is incompatible with _WIN32_IE values, but
1148                         // compatible with the other values returned by
1149                         // GetComCtl32Version()
1150                         s_verComCtl32 = 100*dvi.dwMajorVersion +
1151                                             dvi.dwMinorVersion;
1152                     }
1153                 }
1154             #endif
1155                 // DllGetVersion() unavailable either during compile or
1156                 // run-time, try to guess the version otherwise
1157                 if ( !s_verComCtl32 )
1158                 {
1159                     // InitCommonControlsEx is unique to 4.70 and later
1160                     FARPROC theProc = ::GetProcAddress
1161                                         (
1162                                          hModuleComCtl32,
1163 #if defined(__BORLANDC__) && (__BORLANDC__ <= 0x520)
1164                                          "InitCommonControlsEx"
1165 #else
1166                                          _T("InitCommonControlsEx")
1167 #endif
1168                                         );
1169
1170                     if ( !theProc )
1171                     {
1172                         // not found, must be 4.00
1173                         s_verComCtl32 = 400;
1174                     }
1175                     else
1176                     {
1177                         // many symbols appeared in comctl32 4.71, could use
1178                         // any of them except may be DllInstall
1179                         theProc = ::GetProcAddress
1180                                     (
1181                                      hModuleComCtl32,
1182 #if defined(__BORLANDC__) && (__BORLANDC__ <= 0x520)
1183                                      "InitializeFlatSB"
1184 #else
1185                                      _T("InitializeFlatSB")
1186 #endif
1187                                     );
1188                         if ( !theProc )
1189                         {
1190                             // not found, must be 4.70
1191                             s_verComCtl32 = 470;
1192                         }
1193                         else
1194                         {
1195                             // found, must be 4.71
1196                             s_verComCtl32 = 471;
1197                         }
1198                     }
1199                 }
1200         }
1201     }
1202
1203     return s_verComCtl32;
1204 }
1205
1206 void wxExit()
1207 {
1208     wxLogError(_("Fatal error: exiting"));
1209
1210     wxApp::CleanUp();
1211 }
1212
1213 // Yield to incoming messages
1214 bool wxYield()
1215 {
1216     // we don't want to process WM_QUIT from here - it should be processed in
1217     // the main event loop in order to stop it
1218
1219     MSG msg;
1220     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1221             msg.message != WM_QUIT )
1222     {
1223 #if wxUSE_THREADS
1224         wxMutexGuiLeaveOrEnter();
1225 #endif // wxUSE_THREADS
1226
1227         if ( !wxTheApp->DoMessage() )
1228             break;
1229     }
1230
1231     // If they are pending events, we must process them.
1232     wxTheApp->ProcessPendingEvents();
1233
1234     return TRUE;
1235 }
1236
1237 //-----------------------------------------------------------------------------
1238 // wxWakeUpIdle
1239 //-----------------------------------------------------------------------------
1240
1241 void wxWakeUpIdle()
1242 {
1243     // Send the top window a dummy message so idle handler processing will
1244     // start up again.  Doing it this way ensures that the idle handler
1245     // wakes up in the right thread (see also wxWakeUpMainThread() which does
1246     // the same for the main app thread only)
1247     wxWindow *topWindow = wxTheApp->GetTopWindow();
1248     if ( topWindow )
1249     {
1250         if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
1251         {
1252             // should never happen
1253             wxLogLastError("PostMessage(WM_NULL)");
1254         }
1255     }
1256 }
1257
1258 //-----------------------------------------------------------------------------
1259
1260 wxIcon
1261 wxApp::GetStdIcon(int which) const
1262 {
1263     switch(which)
1264     {
1265         case wxICON_INFORMATION:
1266             return wxIcon("wxICON_INFO");
1267
1268         case wxICON_QUESTION:
1269             return wxIcon("wxICON_QUESTION");
1270
1271         case wxICON_EXCLAMATION:
1272             return wxIcon("wxICON_WARNING");
1273
1274         default:
1275             wxFAIL_MSG(wxT("requested non existent standard icon"));
1276             // still fall through
1277
1278         case wxICON_HAND:
1279             return wxIcon("wxICON_ERROR");
1280     }
1281 }
1282
1283 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1284 // if in a separate file. So include it here to ensure it's linked.
1285 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL))
1286 #include "main.cpp"
1287 #endif