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