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 wxChar *wxOsVersion;
 126 extern wxList *wxWinHandleList;
 127 extern wxList WXDLLEXPORT wxPendingDelete;
 128 extern void wxSetKeyboardHook(bool doIt);
 129 extern wxCursor *g_globalCursor;
 130
 131 MSG s_currentMsg;
 132 wxApp *wxTheApp = NULL;
 133
 134 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 135 //     with NR suffix - wxWindow::MSWCreate() supposes this
 136 const wxChar *wxFrameClassName         = wxT("wxFrameClass");
 137 const wxChar *wxFrameClassNameNoRedraw = wxT("wxFrameClassNR");
 138 const wxChar *wxMDIFrameClassName      = wxT("wxMDIFrameClass");
 139 const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR");
 140 const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass");
 141 const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR");
 142 const wxChar *wxPanelClassName         = wxT("wxPanelClass");
 143 const wxChar *wxCanvasClassName        = wxT("wxCanvasClass");
 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 // ===========================================================================
 158 // implementation
 159 // ===========================================================================
 160
 161 // ---------------------------------------------------------------------------
 162 // wxApp
 163 // ---------------------------------------------------------------------------
 164
 165     IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 166
 167     BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 168         EVT_IDLE(wxApp::OnIdle)
 169         EVT_END_SESSION(wxApp::OnEndSession)
 170         EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 171     END_EVENT_TABLE()
 172
 173 //// Initialize
 174 bool wxApp::Initialize()
 175 {
 176     // Some people may wish to use this, but
 177     // probably it shouldn't be here by default.
 178 #ifdef __WXDEBUG__
 179     //    wxRedirectIOToConsole();
 180 #endif
 181
 182     wxBuffer = new wxChar[1500]; // FIXME
 183
 184     wxClassInfo::InitializeClasses();
 185
 186 #if wxUSE_RESOURCES
 187     wxGetResource(wxT("wxWindows"), wxT("OsVersion"), &wxOsVersion);
 188 #endif
 189
 190 #if wxUSE_THREADS
 191     wxPendingEventsLocker = new wxCriticalSection;
 192 #endif
 193
 194     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 195     wxTheColourDatabase->Initialize();
 196
 197     wxInitializeStockLists();
 198     wxInitializeStockObjects();
 199
 200 #if wxUSE_WX_RESOURCES
 201     wxInitializeResourceSystem();
 202 #endif
 203
 204     wxBitmap::InitStandardHandlers();
 205
 206 #if defined(__WIN95__)
 207     InitCommonControls();
 208
 209 #endif // __WIN95__
 210
 211 #if wxUSE_OLE
 212
 213 #ifdef __WIN16__
 214     // for OLE, enlarge message queue to be as large as possible
 215     int iMsg = 96;
 216     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 217         ;
 218 #endif // Win16
 219     // we need to initialize OLE library
 220     if ( FAILED(::OleInitialize(NULL)) )
 221         wxLogError(_("Cannot initialize OLE"));
 222 #endif // wxUSE_OLE
 223
 224 #if wxUSE_CTL3D
 225     if (!Ctl3dRegister(wxhInstance))
 226         wxLogError(wxT("Cannot register CTL3D"));
 227
 228     Ctl3dAutoSubclass(wxhInstance);
 229 #endif
 230
 231     g_globalCursor = new wxCursor;
 232
 233     // VZ: these icons are not in wx.rc anyhow (but should they?)!
 234 #if 0
 235     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
 236     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
 237     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 238
 239     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
 240     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
 241     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
 242 #endif // 0
 243
 244     RegisterWindowClasses();
 245
 246     // Create the brush for disabling bitmap buttons
 247
 248     LOGBRUSH lb;
 249     lb.lbStyle = BS_PATTERN;
 250     lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
 251     if ( lb.lbHatch )
 252     {
 253         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
 254         ::DeleteObject( (HGDIOBJ)lb.lbHatch );
 255     }
 256     //else: wxWindows resources are probably not linked in
 257
 258 #if wxUSE_PENWINDOWS
 259     wxRegisterPenWin();
 260 #endif
 261
 262     wxWinHandleList = new wxList(wxKEY_INTEGER);
 263
 264     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 265     // PLEASE DO NOT ALTER THIS.
 266 #if defined(__VISUALC__) && !defined(WXMAKINGDLL)
 267     extern char wxDummyChar;
 268     if (wxDummyChar) wxDummyChar++;
 269 #endif
 270
 271     wxSetKeyboardHook(TRUE);
 272
 273     wxModule::RegisterModules();
 274     if (!wxModule::InitializeModules())
 275         return FALSE;
 276     return TRUE;
 277 }
 278
 279 // ---------------------------------------------------------------------------
 280 // RegisterWindowClasses
 281 // ---------------------------------------------------------------------------
 282
 283 // TODO we should only register classes really used by the app. For this it
 284 //      would be enough to just delay the class registration until an attempt
 285 //      to create a window of this class is made.
 286 bool wxApp::RegisterWindowClasses()
 287 {
 288     WNDCLASS wndclass;
 289
 290     // for each class we register one with CS_(V|H)REDRAW style and one
 291     // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
 292     static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 293     static const long styleNoRedraw = CS_DBLCLKS;
 294
 295     // the fields which are common to all classes
 296     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 297     wndclass.cbClsExtra    = 0;
 298     wndclass.cbWndExtra    = sizeof( DWORD ); // VZ: what is this DWORD used for?
 299     wndclass.hInstance     = wxhInstance;
 300     wndclass.hIcon         = (HICON) NULL;
 301     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 302     wndclass.lpszMenuName  = NULL;
 303
 304     // Register the frame window class.
 305     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
 306     wndclass.lpszClassName = wxFrameClassName;
 307     wndclass.style         = styleNormal;
 308
 309     if ( !RegisterClass(&wndclass) )
 310     {
 311         wxLogLastError("RegisterClass(frame)");
 312
 313         return FALSE;
 314     }
 315
 316     // "no redraw" frame
 317     wndclass.lpszClassName = wxFrameClassNameNoRedraw;
 318     wndclass.style         = styleNoRedraw;
 319
 320     if ( !RegisterClass(&wndclass) )
 321     {
 322         wxLogLastError("RegisterClass(no redraw frame)");
 323
 324         return FALSE;
 325     }
 326
 327     // Register the MDI frame window class.
 328     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
 329     wndclass.lpszClassName = wxMDIFrameClassName;
 330     wndclass.style         = styleNormal;
 331
 332     if ( !RegisterClass(&wndclass) )
 333     {
 334         wxLogLastError("RegisterClass(MDI parent)");
 335
 336         return FALSE;
 337     }
 338
 339     // "no redraw" MDI frame
 340     wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
 341     wndclass.style         = styleNoRedraw;
 342
 343     if ( !RegisterClass(&wndclass) )
 344     {
 345         wxLogLastError("RegisterClass(no redraw MDI parent frame)");
 346
 347         return FALSE;
 348     }
 349
 350     // Register the MDI child frame window class.
 351     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 352     wndclass.lpszClassName = wxMDIChildFrameClassName;
 353     wndclass.style         = styleNormal;
 354
 355     if ( !RegisterClass(&wndclass) )
 356     {
 357         wxLogLastError("RegisterClass(MDI child)");
 358
 359         return FALSE;
 360     }
 361
 362     // "no redraw" MDI child frame
 363     wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
 364     wndclass.style         = styleNoRedraw;
 365
 366     if ( !RegisterClass(&wndclass) )
 367     {
 368         wxLogLastError("RegisterClass(no redraw MDI child)");
 369
 370         return FALSE;
 371     }
 372
 373     // Register the panel window class.
 374     wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 375     wndclass.lpszClassName = wxPanelClassName;
 376     wndclass.style         = styleNormal;
 377
 378     if ( !RegisterClass(&wndclass) )
 379     {
 380         wxLogLastError("RegisterClass(panel)");
 381
 382         return FALSE;
 383     }
 384
 385     // Register the canvas and textsubwindow class name
 386     wndclass.hbrBackground = (HBRUSH)NULL;
 387     wndclass.lpszClassName = wxCanvasClassName;
 388
 389     if ( !RegisterClass(&wndclass) )
 390     {
 391         wxLogLastError("RegisterClass(canvas)");
 392
 393         return FALSE;
 394     }
 395
 396     return TRUE;
 397 }
 398
 399 // ---------------------------------------------------------------------------
 400 // Convert Windows to argc, argv style
 401 // ---------------------------------------------------------------------------
 402
 403 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 404 {
 405     wxStringList args;
 406
 407     wxString cmdLine(lpCmdLine);
 408     int count = 0;
 409
 410     // Get application name
 411     wxChar name[260]; // 260 is MAX_PATH value from windef.h
 412     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 413
 414     args.Add(name);
 415     count++;
 416
 417     wxStrcpy(name, wxFileNameFromPath(name));
 418     wxStripExtension(name);
 419     wxTheApp->SetAppName(name);
 420
 421     // Break up string
 422     // Treat strings enclosed in double-quotes as single arguments
 423     int i = 0;
 424     int len = cmdLine.Length();
 425     while (i < len)
 426     {
 427         // Skip whitespace
 428         while ((i < len) && wxIsspace(cmdLine.GetChar(i)))
 429             i ++;
 430
 431         if (i < len)
 432         {
 433             if (cmdLine.GetChar(i) == wxT('"')) // We found the start of a string
 434             {
 435                 i ++;
 436                 int first = i;
 437                 while ((i < len) && (cmdLine.GetChar(i) != wxT('"')))
 438                     i ++;
 439
 440                 wxString arg(cmdLine.Mid(first, (i - first)));
 441
 442                 args.Add(arg);
 443                 count ++;
 444
 445                 if (i < len)
 446                     i ++; // Skip past 2nd quote
 447             }
 448             else // Unquoted argument
 449             {
 450                 int first = i;
 451                 while ((i < len) && !wxIsspace(cmdLine.GetChar(i)))
 452                     i ++;
 453
 454                 wxString arg(cmdLine.Mid(first, (i - first)));
 455
 456                 args.Add(arg);
 457                 count ++;
 458             }
 459         }
 460     }
 461
 462     wxTheApp->argv = new wxChar*[count + 1];
 463     for (i = 0; i < count; i++)
 464     {
 465         wxString arg(args[i]);
 466         wxTheApp->argv[i] = copystring((const wxChar*)arg);
 467     }
 468     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 469     wxTheApp->argc = count;
 470 }
 471
 472 //// Cleans up any wxWindows internal structures left lying around
 473
 474 void wxApp::CleanUp()
 475 {
 476     //// COMMON CLEANUP
 477
 478 #if wxUSE_LOG
 479     // flush the logged messages if any and install a 'safer' log target: the
 480     // default one (wxLogGui) can't be used after the resources are freed just
 481     // below and the user suppliedo ne might be even more unsafe (using any
 482     // wxWindows GUI function is unsafe starting from now)
 483     wxLog::DontCreateOnDemand();
 484
 485     // this will flush the old messages if any
 486     delete wxLog::SetActiveTarget(new wxLogStderr);
 487 #endif // wxUSE_LOG
 488
 489     // One last chance for pending objects to be cleaned up
 490     wxTheApp->DeletePendingObjects();
 491
 492     wxModule::CleanUpModules();
 493
 494 #if wxUSE_WX_RESOURCES
 495     wxCleanUpResourceSystem();
 496
 497     //  wxDefaultResourceTable->ClearTable();
 498 #endif
 499
 500     // Indicate that the cursor can be freed, so that cursor won't be deleted
 501     // by deleting the bitmap list before g_globalCursor goes out of scope
 502     // (double deletion of the cursor).
 503     wxSetCursor(wxNullCursor);
 504     delete g_globalCursor;
 505     g_globalCursor = NULL;
 506
 507     wxDeleteStockObjects();
 508
 509     // Destroy all GDI lists, etc.
 510     wxDeleteStockLists();
 511
 512     delete wxTheColourDatabase;
 513     wxTheColourDatabase = NULL;
 514
 515     wxBitmap::CleanUpHandlers();
 516
 517     delete[] wxBuffer;
 518     wxBuffer = NULL;
 519
 520     //// WINDOWS-SPECIFIC CLEANUP
 521
 522     wxSetKeyboardHook(FALSE);
 523
 524 #if wxUSE_PENWINDOWS
 525     wxCleanUpPenWin();
 526 #endif
 527
 528     if (wxSTD_FRAME_ICON)
 529         DestroyIcon(wxSTD_FRAME_ICON);
 530     if (wxSTD_MDICHILDFRAME_ICON)
 531         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 532     if (wxSTD_MDIPARENTFRAME_ICON)
 533         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 534
 535     if (wxDEFAULT_FRAME_ICON)
 536         DestroyIcon(wxDEFAULT_FRAME_ICON);
 537     if (wxDEFAULT_MDICHILDFRAME_ICON)
 538         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 539     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 540         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 541
 542     if ( wxDisableButtonBrush )
 543         ::DeleteObject( wxDisableButtonBrush );
 544
 545 #if wxUSE_OLE
 546     ::OleUninitialize();
 547 #endif
 548
 549 #if wxUSE_CTL3D
 550     Ctl3dUnregister(wxhInstance);
 551 #endif
 552
 553     if (wxWinHandleList)
 554         delete wxWinHandleList;
 555
 556     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 557     // create a module for that as it's part of the core.
 558     delete wxPendingEvents;
 559 #if wxUSE_THREADS
 560     delete wxPendingEventsLocker;
 561     // If we don't do the following, we get an apparent memory leak.
 562     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 563 #endif
 564
 565     wxClassInfo::CleanUpClasses();
 566
 567     delete wxTheApp;
 568     wxTheApp = NULL;
 569
 570 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 571     // At this point we want to check if there are any memory
 572     // blocks that aren't part of the wxDebugContext itself,
 573     // as a special case. Then when dumping we need to ignore
 574     // wxDebugContext, too.
 575     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 576     {
 577         wxLogDebug(wxT("There were memory leaks."));
 578         wxDebugContext::Dump();
 579         wxDebugContext::PrintStatistics();
 580     }
 581     //  wxDebugContext::SetStream(NULL, NULL);
 582 #endif
 583
 584 #if wxUSE_LOG
 585     // do it as the very last thing because everything else can log messages
 586     delete wxLog::SetActiveTarget(NULL);
 587 #endif // wxUSE_LOG
 588 }
 589
 590 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 591
 592 // temporarily disable this warning which would be generated in release builds
 593 // because of __try
 594 #ifdef __VISUALC__
 595     #pragma warning(disable: 4715) // not all control paths return a value
 596 #endif // Visual C++
 597
 598 //// Main wxWindows entry point
 599 int wxEntry(WXHINSTANCE hInstance,
 600             WXHINSTANCE WXUNUSED(hPrevInstance),
 601             char *lpCmdLine,
 602             int nCmdShow,
 603             bool enterLoop)
 604 {
 605     // do check for memory leaks on program exit
 606     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 607     //  deallocated memory which may be used to simulate low-memory condition)
 608     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 609 #ifdef __MWERKS__
 610 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 611     // This seems to be necessary since there are 'rogue'
 612     // objects present at this point (perhaps global objects?)
 613     // Setting a checkpoint will ignore them as far as the
 614     // memory checking facility is concerned.
 615     // Of course you may argue that memory allocated in globals should be
 616     // checked, but this is a reasonable compromise.
 617     wxDebugContext::SetCheckpoint();
 618 #endif
 619 #endif
 620     // take everything into a try-except block in release build
 621     // FIXME other compilers must support Win32 SEH (structured exception
 622     //       handling) too, just find the appropriate keyword in their docs!
 623     //       Please note that it's _not_ the same as C++ exceptions!
 624 #if !defined(__WXDEBUG__) && defined(__VISUALC__)
 625     #define CATCH_PROGRAM_EXCEPTIONS
 626
 627     __try {
 628 #else
 629     #undef  CATCH_PROGRAM_EXCEPTIONS
 630 #endif
 631         wxhInstance = (HINSTANCE) hInstance;
 632
 633         if (!wxApp::Initialize())
 634             return 0;
 635
 636         // create the application object or ensure that one already exists
 637         if (!wxTheApp)
 638         {
 639             // The app may have declared a global application object, but we recommend
 640             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 641             // function for delayed, dynamic app object construction.
 642             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 643                          wxT("No initializer - use IMPLEMENT_APP macro.") );
 644
 645             wxTheApp = (*wxApp::GetInitializerFunction()) ();
 646         }
 647
 648         wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 649
 650         // save the WinMain() parameters
 651         wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 652         wxTheApp->m_nCmdShow = nCmdShow;
 653
 654         // GUI-specific initialisation. In fact on Windows we don't have any,
 655         // but this call is provided for compatibility across platforms.
 656         wxTheApp->OnInitGui();
 657
 658         // We really don't want timestamps by default, because it means
 659         // we can't simply double-click on the error message and get to that
 660         // line in the source. So VC++ at least, let's have a sensible default.
 661 #ifdef __VISUALC__
 662         wxLog::SetTimestamp(NULL);
 663 #endif
 664
 665         int retValue = 0;
 666
 667         if ( wxTheApp->OnInit() )
 668         {
 669             if ( enterLoop )
 670             {
 671                 retValue = wxTheApp->OnRun();
 672             }
 673             else
 674                 // We want to initialize, but not run or exit immediately.
 675                 return 1;
 676         }
 677         //else: app initialization failed, so we skipped OnRun()
 678
 679         wxWindow *topWindow = wxTheApp->GetTopWindow();
 680         if ( topWindow )
 681         {
 682             // Forcibly delete the window.
 683             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 684                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 685             {
 686                 topWindow->Close(TRUE);
 687                 wxTheApp->DeletePendingObjects();
 688             }
 689             else
 690             {
 691                 delete topWindow;
 692                 wxTheApp->SetTopWindow(NULL);
 693             }
 694         }
 695
 696         wxTheApp->OnExit();
 697
 698         wxApp::CleanUp();
 699
 700         return retValue;
 701
 702 #ifdef CATCH_PROGRAM_EXCEPTIONS
 703     }
 704     __except ( EXCEPTION_EXECUTE_HANDLER ) {
 705         /*
 706            if ( wxTheApp )
 707            wxTheApp->OnFatalException();
 708          */
 709
 710         // using wxLog would be unsafe here
 711         ::MessageBox(NULL,
 712                      _("Unrecoverable program error detected: "
 713                      " the application will terminate."),
 714                      _("Fatal Error"),
 715                      MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 716
 717         ::ExitProcess(3); // the same exit code as abort()
 718
 719         // NOTREACHED
 720     }
 721 #endif // CATCH_PROGRAM_EXCEPTIONS
 722 }
 723
 724 // restore warning state
 725 #ifdef __VISUALC__
 726     #pragma warning(default: 4715) // not all control paths return a value
 727 #endif // Visual C++
 728
 729 #else /*  _WINDLL  */
 730
 731 //// Entry point for DLLs
 732
 733 int wxEntry(WXHINSTANCE hInstance)
 734 {
 735     wxhInstance = (HINSTANCE) hInstance;
 736     wxApp::Initialize();
 737
 738     // The app may have declared a global application object, but we recommend
 739     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 740     // for delayed, dynamic app object construction.
 741     if (!wxTheApp)
 742     {
 743         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 744                      "No initializer - use IMPLEMENT_APP macro." );
 745
 746         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 747     }
 748
 749     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 750
 751     wxTheApp->argc = 0;
 752     wxTheApp->argv = NULL;
 753
 754     wxTheApp->OnInitGui();
 755
 756     wxTheApp->OnInit();
 757
 758     wxWindow *topWindow = wxTheApp->GetTopWindow();
 759     if ( topWindow && topWindow->GetHWND())
 760     {
 761         topWindow->Show(TRUE);
 762     }
 763
 764     return 1;
 765 }
 766 #endif // _WINDLL
 767
 768 //// Static member initialization
 769
 770 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 771
 772 wxApp::wxApp()
 773 {
 774     m_topWindow = NULL;
 775     wxTheApp = this;
 776     m_wantDebugOutput = TRUE;
 777
 778     argc = 0;
 779     argv = NULL;
 780     m_printMode = wxPRINT_WINDOWS;
 781     m_exitOnFrameDelete = TRUE;
 782     m_auto3D = TRUE;
 783 }
 784
 785 wxApp::~wxApp()
 786 {
 787     // Delete command-line args
 788     int i;
 789     for (i = 0; i < argc; i++)
 790     {
 791         delete[] argv[i];
 792     }
 793     delete[] argv;
 794 }
 795
 796 bool wxApp::Initialized()
 797 {
 798 #ifndef _WINDLL
 799     if (GetTopWindow())
 800         return TRUE;
 801     else
 802         return FALSE;
 803 #endif
 804 #ifdef _WINDLL // Assume initialized if DLL (no way of telling)
 805     return TRUE;
 806 #endif
 807 }
 808
 809 /*
 810  * Get and process a message, returning FALSE if WM_QUIT
 811  * received (and also set the flag telling the app to exit the main loop)
 812  *
 813  */
 814 bool wxApp::DoMessage()
 815 {
 816     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 817     if ( rc == 0 )
 818     {
 819         // got WM_QUIT
 820         m_keepGoing = FALSE;
 821
 822         return FALSE;
 823     }
 824     else if ( rc == -1 )
 825     {
 826         // should never happen, but let's test for it nevertheless
 827         wxLogLastError("GetMessage");
 828     }
 829     else
 830     {
 831 #if wxUSE_THREADS
 832         wxASSERT_MSG( wxThread::IsMain(),
 833                       wxT("only the main thread can process Windows messages") );
 834
 835         static bool s_hadGuiLock = TRUE;
 836         static wxMsgArray s_aSavedMessages;
 837
 838         // if a secondary thread owns is doing GUI calls, save all messages for
 839         // later processing - we can't process them right now because it will
 840         // lead to recursive library calls (and we're not reentrant)
 841         if ( !wxGuiOwnedByMainThread() )
 842         {
 843             s_hadGuiLock = FALSE;
 844
 845             // leave out WM_COMMAND messages: too dangerous, sometimes
 846             // the message will be processed twice
 847             if ( !wxIsWaitingForThread() ||
 848                     s_currentMsg.message != WM_COMMAND )
 849             {
 850                 s_aSavedMessages.Add(s_currentMsg);
 851             }
 852
 853             return TRUE;
 854         }
 855         else
 856         {
 857             // have we just regained the GUI lock? if so, post all of the saved
 858             // messages
 859             //
 860             // FIXME of course, it's not _exactly_ the same as processing the
 861             //       messages normally - expect some things to break...
 862             if ( !s_hadGuiLock )
 863             {
 864                 s_hadGuiLock = TRUE;
 865
 866                 size_t count = s_aSavedMessages.Count();
 867                 for ( size_t n = 0; n < count; n++ )
 868                 {
 869                     MSG& msg = s_aSavedMessages[n];
 870
 871                     if ( !ProcessMessage((WXMSG *)&msg) )
 872                     {
 873                         ::TranslateMessage(&msg);
 874                         ::DispatchMessage(&msg);
 875                     }
 876                 }
 877
 878                 s_aSavedMessages.Empty();
 879             }
 880         }
 881 #endif // wxUSE_THREADS
 882
 883         // Process the message
 884         if ( !ProcessMessage((WXMSG *)&s_currentMsg) )
 885         {
 886             ::TranslateMessage(&s_currentMsg);
 887             ::DispatchMessage(&s_currentMsg);
 888         }
 889     }
 890
 891     return TRUE;
 892 }
 893
 894 /*
 895  * Keep trying to process messages until WM_QUIT
 896  * received.
 897  *
 898  * If there are messages to be processed, they will all be
 899  * processed and OnIdle will not be called.
 900  * When there are no more messages, OnIdle is called.
 901  * If OnIdle requests more time,
 902  * it will be repeatedly called so long as there are no pending messages.
 903  * A 'feature' of this is that once OnIdle has decided that no more processing
 904  * is required, then it won't get processing time until further messages
 905  * are processed (it'll sit in DoMessage).
 906  */
 907
 908 int wxApp::MainLoop()
 909 {
 910     m_keepGoing = TRUE;
 911
 912     while ( m_keepGoing )
 913     {
 914 #if wxUSE_THREADS
 915         wxMutexGuiLeaveOrEnter();
 916 #endif // wxUSE_THREADS
 917
 918         while ( !Pending() && ProcessIdle() )
 919             ;
 920
 921         // a message came or no more idle processing to do
 922         DoMessage();
 923     }
 924
 925     return s_currentMsg.wParam;
 926 }
 927
 928 // Returns TRUE if more time is needed.
 929 bool wxApp::ProcessIdle()
 930 {
 931     wxIdleEvent event;
 932     event.SetEventObject(this);
 933     ProcessEvent(event);
 934
 935     return event.MoreRequested();
 936 }
 937
 938 void wxApp::ExitMainLoop()
 939 {
 940     // VZ: why not ::PostQuitMessage()?
 941     m_keepGoing = FALSE;
 942 }
 943
 944 bool wxApp::Pending()
 945 {
 946     return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0;
 947 }
 948
 949 void wxApp::Dispatch()
 950 {
 951     DoMessage();
 952 }
 953
 954 /*
 955  * Give all windows a chance to preprocess
 956  * the message. Some may have accelerator tables, or have
 957  * MDI complications.
 958  */
 959
 960 bool wxApp::ProcessMessage(WXMSG *wxmsg)
 961 {
 962     MSG *msg = (MSG *)wxmsg;
 963     HWND hWnd = msg->hwnd;
 964     wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hWnd);
 965
 966 #if wxUSE_TOOLTIPS
 967     // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
 968     // popup the tooltip bubbles
 969     if ( wndThis && (msg->message == WM_MOUSEMOVE) )
 970     {
 971         wxToolTip *tt = wndThis->GetToolTip();
 972         if ( tt )
 973         {
 974             tt->RelayEvent(wxmsg);
 975         }
 976     }
 977 #endif // wxUSE_TOOLTIPS
 978
 979     // Try translations first; find the youngest window with
 980     // a translation table.
 981     wxWindow *wnd;
 982     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 983     {
 984         if ( wnd->MSWTranslateMessage(wxmsg) )
 985             return TRUE;
 986     }
 987
 988     // Anyone for a non-translation message? Try youngest descendants first.
 989     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 990     {
 991         if ( wnd->MSWProcessMessage(wxmsg) )
 992             return TRUE;
 993     }
 994
 995     return FALSE;
 996 }
 997
 998 void wxApp::OnIdle(wxIdleEvent& event)
 999 {
1000     static bool s_inOnIdle = FALSE;
1001
1002     // Avoid recursion (via ProcessEvent default case)
1003     if ( s_inOnIdle )
1004         return;
1005
1006     s_inOnIdle = TRUE;
1007
1008     // If there are pending events, we must process them: pending events
1009     // are either events to the threads other than main or events posted
1010     // with wxPostEvent() functions
1011     // GRG: I have moved this here so that all pending events are processed
1012     //   before starting to delete any objects. This behaves better (in
1013     //   particular, wrt wxPostEvent) and is coherent with wxGTK's current
1014     //   behaviour. Changed Feb/2000 before 2.1.14
1015     ProcessPendingEvents();
1016
1017     // 'Garbage' collection of windows deleted with Close().
1018     DeletePendingObjects();
1019
1020 #if wxUSE_LOG
1021     // flush the logged messages if any
1022     wxLog *pLog = wxLog::GetActiveTarget();
1023     if ( pLog != NULL && pLog->HasPendingMessages() )
1024         pLog->Flush();
1025 #endif // wxUSE_LOG
1026
1027     // Send OnIdle events to all windows
1028     if ( SendIdleEvents() )
1029     {
1030         // SendIdleEvents() returns TRUE if at least one window requested more
1031         // idle events
1032         event.RequestMore(TRUE);
1033     }
1034
1035     s_inOnIdle = FALSE;
1036 }
1037
1038 // Send idle event to all top-level windows
1039 bool wxApp::SendIdleEvents()
1040 {
1041     bool needMore = FALSE;
1042
1043     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1044     while (node)
1045     {
1046         wxWindow* win = node->GetData();
1047         if (SendIdleEvents(win))
1048             needMore = TRUE;
1049         node = node->GetNext();
1050     }
1051
1052     return needMore;
1053 }
1054
1055 // Send idle event to window and all subwindows
1056 bool wxApp::SendIdleEvents(wxWindow* win)
1057 {
1058     bool needMore = FALSE;
1059
1060     wxIdleEvent event;
1061     event.SetEventObject(win);
1062     win->GetEventHandler()->ProcessEvent(event);
1063
1064     if (event.MoreRequested())
1065         needMore = TRUE;
1066
1067     wxNode* node = win->GetChildren().First();
1068     while (node)
1069     {
1070         wxWindow* win = (wxWindow*) node->Data();
1071         if (SendIdleEvents(win))
1072             needMore = TRUE;
1073
1074         node = node->Next();
1075     }
1076     return needMore;
1077 }
1078
1079 void wxApp::DeletePendingObjects()
1080 {
1081     wxNode *node = wxPendingDelete.First();
1082     while (node)
1083     {
1084         wxObject *obj = (wxObject *)node->Data();
1085
1086         delete obj;
1087
1088         if (wxPendingDelete.Member(obj))
1089             delete node;
1090
1091         // Deleting one object may have deleted other pending
1092         // objects, so start from beginning of list again.
1093         node = wxPendingDelete.First();
1094     }
1095 }
1096
1097 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1098 {
1099     if (GetTopWindow())
1100         GetTopWindow()->Close(TRUE);
1101 }
1102
1103 // Default behaviour: close the application with prompts. The
1104 // user can veto the close, and therefore the end session.
1105 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1106 {
1107     if (GetTopWindow())
1108     {
1109         if (!GetTopWindow()->Close(!event.CanVeto()))
1110             event.Veto(TRUE);
1111     }
1112 }
1113
1114 /* static */
1115 int wxApp::GetComCtl32Version()
1116 {
1117     // cache the result
1118     static int s_verComCtl32 = -1;
1119
1120     wxCRIT_SECT_DECLARE(csComCtl32);
1121     wxCRIT_SECT_LOCKER(lock, csComCtl32);
1122
1123     if ( s_verComCtl32 == -1 )
1124     {
1125         // initally assume no comctl32.dll at all
1126         s_verComCtl32 = 0;
1127
1128         // do we have it?
1129         HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
1130
1131         // if so, then we can check for the version
1132         if ( hModuleComCtl32 )
1133         {
1134             // try to use DllGetVersion() if available in _headers_
1135             #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
1136                 DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
1137                     ::GetProcAddress(hModuleComCtl32, _T("DllGetVersion"));
1138                 if ( pfnDllGetVersion )
1139                 {
1140                     DLLVERSIONINFO dvi;
1141                     dvi.cbSize = sizeof(dvi);
1142
1143                     HRESULT hr = (*pfnDllGetVersion)(&dvi);
1144                     if ( FAILED(hr) )
1145                     {
1146                         wxLogApiError(_T("DllGetVersion"), hr);
1147                     }
1148                     else
1149                     {
1150                         // this is incompatible with _WIN32_IE values, but
1151                         // compatible with the other values returned by
1152                         // GetComCtl32Version()
1153                         s_verComCtl32 = 100*dvi.dwMajorVersion +
1154                                             dvi.dwMinorVersion;
1155                     }
1156                 }
1157             #endif
1158                 // DllGetVersion() unavailable either during compile or
1159                 // run-time, try to guess the version otherwise
1160                 if ( !s_verComCtl32 )
1161                 {
1162                     // InitCommonControlsEx is unique to 4.70 and later
1163                     FARPROC theProc = ::GetProcAddress
1164                                         (
1165                                          hModuleComCtl32,
1166 #if defined(__BORLANDC__) && (__BORLANDC__ <= 0x520)
1167                                          "InitCommonControlsEx"
1168 #else
1169                                          _T("InitCommonControlsEx")
1170 #endif
1171                                         );
1172
1173                     if ( !theProc )
1174                     {
1175                         // not found, must be 4.00
1176                         s_verComCtl32 = 400;
1177                     }
1178                     else
1179                     {
1180                         // many symbols appeared in comctl32 4.71, could use
1181                         // any of them except may be DllInstall
1182                         theProc = ::GetProcAddress
1183                                     (
1184                                      hModuleComCtl32,
1185 #if defined(__BORLANDC__) && (__BORLANDC__ <= 0x520)
1186                                      "InitializeFlatSB"
1187 #else
1188                                      _T("InitializeFlatSB")
1189 #endif
1190                                     );
1191                         if ( !theProc )
1192                         {
1193                             // not found, must be 4.70
1194                             s_verComCtl32 = 470;
1195                         }
1196                         else
1197                         {
1198                             // found, must be 4.71
1199                             s_verComCtl32 = 471;
1200                         }
1201                     }
1202                 }
1203         }
1204     }
1205
1206     return s_verComCtl32;
1207 }
1208
1209 void wxExit()
1210 {
1211     wxLogError(_("Fatal error: exiting"));
1212
1213     wxApp::CleanUp();
1214 }
1215
1216 // Yield to incoming messages
1217 bool wxYield()
1218 {
1219     // we don't want to process WM_QUIT from here - it should be processed in
1220     // the main event loop in order to stop it
1221
1222     MSG msg;
1223     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1224             msg.message != WM_QUIT )
1225     {
1226 #if wxUSE_THREADS
1227         wxMutexGuiLeaveOrEnter();
1228 #endif // wxUSE_THREADS
1229
1230         if ( !wxTheApp->DoMessage() )
1231             break;
1232     }
1233
1234     // If they are pending events, we must process them.
1235     wxTheApp->ProcessPendingEvents();
1236
1237     return TRUE;
1238 }
1239
1240 //-----------------------------------------------------------------------------
1241 // wxWakeUpIdle
1242 //-----------------------------------------------------------------------------
1243
1244 void wxWakeUpIdle()
1245 {
1246     // Send the top window a dummy message so idle handler processing will
1247     // start up again.  Doing it this way ensures that the idle handler
1248     // wakes up in the right thread (see also wxWakeUpMainThread() which does
1249     // the same for the main app thread only)
1250     wxWindow *topWindow = wxTheApp->GetTopWindow();
1251     if ( topWindow )
1252     {
1253         if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
1254         {
1255             // should never happen
1256             wxLogLastError("PostMessage(WM_NULL)");
1257         }
1258     }
1259 }
1260
1261 //-----------------------------------------------------------------------------
1262
1263 wxIcon
1264 wxApp::GetStdIcon(int which) const
1265 {
1266     switch(which)
1267     {
1268         case wxICON_INFORMATION:
1269             return wxIcon("wxICON_INFO");
1270
1271         case wxICON_QUESTION:
1272             return wxIcon("wxICON_QUESTION");
1273
1274         case wxICON_EXCLAMATION:
1275             return wxIcon("wxICON_WARNING");
1276
1277         default:
1278             wxFAIL_MSG(wxT("requested non existent standard icon"));
1279             // still fall through
1280
1281         case wxICON_HAND:
1282             return wxIcon("wxICON_ERROR");
1283     }
1284 }
1285
1286 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1287 // if in a separate file. So include it here to ensure it's linked.
1288 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL))
1289 #include "main.cpp"
1290 #endif