src/msw/app.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        app.cpp
   3 // Purpose:     wxApp
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "app.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #if defined(__BORLANDC__)
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/frame.h"
  33     #include "wx/app.h"
  34     #include "wx/utils.h"
  35     #include "wx/gdicmn.h"
  36     #include "wx/pen.h"
  37     #include "wx/brush.h"
  38     #include "wx/cursor.h"
  39     #include "wx/icon.h"
  40     #include "wx/palette.h"
  41     #include "wx/dc.h"
  42     #include "wx/dialog.h"
  43     #include "wx/msgdlg.h"
  44     #include "wx/intl.h"
  45     #include "wx/dynarray.h"
  46     #include "wx/wxchar.h"
  47     #include "wx/icon.h"
  48 #endif
  49
  50 #include "wx/log.h"
  51 #include "wx/module.h"
  52
  53 #include "wx/msw/private.h"
  54
  55 #if wxUSE_THREADS
  56     #include "wx/thread.h"
  57
  58     // define the array of MSG strutures
  59     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  60
  61     #include "wx/arrimpl.cpp"
  62
  63     WX_DEFINE_OBJARRAY(wxMsgArray);
  64 #endif // wxUSE_THREADS
  65
  66 #if wxUSE_WX_RESOURCES
  67     #include "wx/resource.h"
  68 #endif
  69
  70 // OLE is used for drag-and-drop, clipboard, OLE Automation...
  71 #ifndef wxUSE_NORLANDER_HEADERS
  72 #if defined(__GNUWIN32__) || defined(__SC__) || defined(__SALFORDC__)
  73     #undef wxUSE_OLE
  74
  75     #define  wxUSE_OLE 0
  76 #endif // broken compilers
  77 #endif
  78
  79 #if wxUSE_OLE
  80     #include <ole2.h>
  81 #endif
  82
  83 #include <string.h>
  84 #include <ctype.h>
  85
  86 #if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
  87     #include <commctrl.h>
  88 #endif
  89
  90 #include "wx/msw/msvcrt.h"
  91
  92 // ----------------------------------------------------------------------------
  93 // conditional compilation
  94 // ----------------------------------------------------------------------------
  95
  96 // The macro _WIN32_IE is defined by commctrl.h (unless it had already been
  97 // defined before) and shows us what common control features are available
  98 // during the compile time (it doesn't mean that they will be available during
  99 // the run-time, use GetComCtl32Version() to test for them!). The possible
 100 // values are:
 101 //
 102 // 0x0200     for comctl32.dll 4.00 shipped with Win95/NT 4.0
 103 // 0x0300                      4.70              IE 3.x
 104 // 0x0400                      4.71              IE 4.0
 105 // 0x0401                      4.72              IE 4.01 and Win98
 106 // 0x0500                      5.00              IE 5.x and NT 5.0 (Win2000)
 107
 108 #ifndef _WIN32_IE
 109     // minimal set of features by default
 110     #define _WIN32_IE 0x0200
 111 #endif
 112
 113 #if _WIN32_IE >= 0x0300
 114     #include <shlwapi.h>
 115 #endif
 116
 117 // ---------------------------------------------------------------------------
 118 // global variables
 119 // ---------------------------------------------------------------------------
 120
 121 extern wxChar *wxBuffer;
 122 extern wxChar *wxOsVersion;
 123 extern wxList *wxWinHandleList;
 124 extern wxList WXDLLEXPORT wxPendingDelete;
 125 extern void wxSetKeyboardHook(bool doIt);
 126 extern wxCursor *g_globalCursor;
 127
 128 MSG s_currentMsg;
 129 wxApp *wxTheApp = NULL;
 130
 131 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 132 //     with NR suffix - wxWindow::MSWCreate() supposes this
 133 const wxChar *wxFrameClassName         = wxT("wxFrameClass");
 134 const wxChar *wxFrameClassNameNoRedraw = wxT("wxFrameClassNR");
 135 const wxChar *wxMDIFrameClassName      = wxT("wxMDIFrameClass");
 136 const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR");
 137 const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass");
 138 const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR");
 139 const wxChar *wxPanelClassName         = wxT("wxPanelClass");
 140 const wxChar *wxCanvasClassName        = wxT("wxCanvasClass");
 141
 142 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 143 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 144 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 145
 146 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 147 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 148 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 149
 150 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 151
 152 LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 153
 154 // ===========================================================================
 155 // implementation
 156 // ===========================================================================
 157
 158 // ---------------------------------------------------------------------------
 159 // wxApp
 160 // ---------------------------------------------------------------------------
 161
 162     IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 163
 164     BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 165         EVT_IDLE(wxApp::OnIdle)
 166         EVT_END_SESSION(wxApp::OnEndSession)
 167         EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 168     END_EVENT_TABLE()
 169
 170 //// Initialize
 171 bool wxApp::Initialize()
 172 {
 173     // Some people may wish to use this, but
 174     // probably it shouldn't be here by default.
 175 #ifdef __WXDEBUG__
 176     //    wxRedirectIOToConsole();
 177 #endif
 178
 179     wxBuffer = new wxChar[1500]; // FIXME
 180
 181     wxClassInfo::InitializeClasses();
 182
 183 #if wxUSE_RESOURCES
 184     wxGetResource(wxT("wxWindows"), wxT("OsVersion"), &wxOsVersion);
 185 #endif
 186
 187 #if wxUSE_THREADS
 188     wxPendingEventsLocker = new wxCriticalSection;
 189 #endif
 190
 191     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 192     wxTheColourDatabase->Initialize();
 193
 194     wxInitializeStockLists();
 195     wxInitializeStockObjects();
 196
 197 #if wxUSE_WX_RESOURCES
 198     wxInitializeResourceSystem();
 199 #endif
 200
 201     wxBitmap::InitStandardHandlers();
 202
 203 #if defined(__WIN95__)
 204     InitCommonControls();
 205
 206 #endif // __WIN95__
 207
 208 #if wxUSE_OLE
 209
 210 #ifdef __WIN16__
 211     // for OLE, enlarge message queue to be as large as possible
 212     int iMsg = 96;
 213     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 214         ;
 215 #endif // Win16
 216     // we need to initialize OLE library
 217     if ( FAILED(::OleInitialize(NULL)) )
 218         wxLogError(_("Cannot initialize OLE"));
 219 #endif // wxUSE_OLE
 220
 221 #if wxUSE_CTL3D
 222     if (!Ctl3dRegister(wxhInstance))
 223         wxLogError(wxT("Cannot register CTL3D"));
 224
 225     Ctl3dAutoSubclass(wxhInstance);
 226 #endif
 227
 228     g_globalCursor = new wxCursor;
 229
 230     // VZ: these icons are not in wx.rc anyhow (but should they?)!
 231 #if 0
 232     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
 233     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
 234     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 235
 236     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
 237     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
 238     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
 239 #endif // 0
 240
 241     RegisterWindowClasses();
 242
 243     // Create the brush for disabling bitmap buttons
 244
 245     LOGBRUSH lb;
 246     lb.lbStyle = BS_PATTERN;
 247     lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
 248     if ( lb.lbHatch )
 249     {
 250         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
 251         ::DeleteObject( (HGDIOBJ)lb.lbHatch );
 252     }
 253     //else: wxWindows resources are probably not linked in
 254
 255 #if wxUSE_PENWINDOWS
 256     wxRegisterPenWin();
 257 #endif
 258
 259     wxWinHandleList = new wxList(wxKEY_INTEGER);
 260
 261     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 262     // PLEASE DO NOT ALTER THIS.
 263 #if defined(__VISUALC__) && !defined(WXMAKINGDLL)
 264     extern char wxDummyChar;
 265     if (wxDummyChar) wxDummyChar++;
 266 #endif
 267
 268     wxSetKeyboardHook(TRUE);
 269
 270     wxModule::RegisterModules();
 271     if (!wxModule::InitializeModules())
 272         return FALSE;
 273     return TRUE;
 274 }
 275
 276 // ---------------------------------------------------------------------------
 277 // RegisterWindowClasses
 278 // ---------------------------------------------------------------------------
 279
 280 // TODO we should only register classes really used by the app. For this it
 281 //      would be enough to just delay the class registration until an attempt
 282 //      to create a window of this class is made.
 283 bool wxApp::RegisterWindowClasses()
 284 {
 285     WNDCLASS wndclass;
 286
 287     // for each class we register one with CS_(V|H)REDRAW style and one
 288     // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
 289     static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 290     static const long styleNoRedraw = CS_DBLCLKS;
 291
 292     // the fields which are common to all classes
 293     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 294     wndclass.cbClsExtra    = 0;
 295     wndclass.cbWndExtra    = sizeof( DWORD ); // VZ: what is this DWORD used for?
 296     wndclass.hInstance     = wxhInstance;
 297     wndclass.hIcon         = (HICON) NULL;
 298     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 299     wndclass.lpszMenuName  = NULL;
 300
 301     // Register the frame window class.
 302     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
 303     wndclass.lpszClassName = wxFrameClassName;
 304     wndclass.style         = styleNormal;
 305
 306     if ( !RegisterClass(&wndclass) )
 307     {
 308         wxLogLastError("RegisterClass(frame)");
 309
 310         return FALSE;
 311     }
 312
 313     // "no redraw" frame
 314     wndclass.lpszClassName = wxFrameClassNameNoRedraw;
 315     wndclass.style         = styleNoRedraw;
 316
 317     if ( !RegisterClass(&wndclass) )
 318     {
 319         wxLogLastError("RegisterClass(no redraw frame)");
 320
 321         return FALSE;
 322     }
 323
 324     // Register the MDI frame window class.
 325     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
 326     wndclass.lpszClassName = wxMDIFrameClassName;
 327     wndclass.style         = styleNormal;
 328
 329     if ( !RegisterClass(&wndclass) )
 330     {
 331         wxLogLastError("RegisterClass(MDI parent)");
 332
 333         return FALSE;
 334     }
 335
 336     // "no redraw" MDI frame
 337     wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
 338     wndclass.style         = styleNoRedraw;
 339
 340     if ( !RegisterClass(&wndclass) )
 341     {
 342         wxLogLastError("RegisterClass(no redraw MDI parent frame)");
 343
 344         return FALSE;
 345     }
 346
 347     // Register the MDI child frame window class.
 348     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 349     wndclass.lpszClassName = wxMDIChildFrameClassName;
 350     wndclass.style         = styleNormal;
 351
 352     if ( !RegisterClass(&wndclass) )
 353     {
 354         wxLogLastError("RegisterClass(MDI child)");
 355
 356         return FALSE;
 357     }
 358
 359     // "no redraw" MDI child frame
 360     wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
 361     wndclass.style         = styleNoRedraw;
 362
 363     if ( !RegisterClass(&wndclass) )
 364     {
 365         wxLogLastError("RegisterClass(no redraw MDI child)");
 366
 367         return FALSE;
 368     }
 369
 370     // Register the panel window class.
 371     wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 372     wndclass.lpszClassName = wxPanelClassName;
 373     wndclass.style         = styleNormal;
 374
 375     if ( !RegisterClass(&wndclass) )
 376     {
 377         wxLogLastError("RegisterClass(panel)");
 378
 379         return FALSE;
 380     }
 381
 382     // Register the canvas and textsubwindow class name
 383     wndclass.hbrBackground = (HBRUSH)NULL;
 384     wndclass.lpszClassName = wxCanvasClassName;
 385
 386     if ( !RegisterClass(&wndclass) )
 387     {
 388         wxLogLastError("RegisterClass(canvas)");
 389
 390         return FALSE;
 391     }
 392
 393     return TRUE;
 394 }
 395
 396 // ---------------------------------------------------------------------------
 397 // Convert Windows to argc, argv style
 398 // ---------------------------------------------------------------------------
 399
 400 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 401 {
 402     wxStringList args;
 403
 404     wxString cmdLine(lpCmdLine);
 405     int count = 0;
 406
 407     // Get application name
 408     wxChar name[260]; // 260 is MAX_PATH value from windef.h
 409     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 410
 411     args.Add(name);
 412     count++;
 413
 414     wxStrcpy(name, wxFileNameFromPath(name));
 415     wxStripExtension(name);
 416     wxTheApp->SetAppName(name);
 417
 418     // Break up string
 419     // Treat strings enclosed in double-quotes as single arguments
 420     int i = 0;
 421     int len = cmdLine.Length();
 422     while (i < len)
 423     {
 424         // Skip whitespace
 425         while ((i < len) && wxIsspace(cmdLine.GetChar(i)))
 426             i ++;
 427
 428         if (i < len)
 429         {
 430             if (cmdLine.GetChar(i) == wxT('"')) // We found the start of a string
 431             {
 432                 i ++;
 433                 int first = i;
 434                 while ((i < len) && (cmdLine.GetChar(i) != wxT('"')))
 435                     i ++;
 436
 437                 wxString arg(cmdLine.Mid(first, (i - first)));
 438
 439                 args.Add(arg);
 440                 count ++;
 441
 442                 if (i < len)
 443                     i ++; // Skip past 2nd quote
 444             }
 445             else // Unquoted argument
 446             {
 447                 int first = i;
 448                 while ((i < len) && !wxIsspace(cmdLine.GetChar(i)))
 449                     i ++;
 450
 451                 wxString arg(cmdLine.Mid(first, (i - first)));
 452
 453                 args.Add(arg);
 454                 count ++;
 455             }
 456         }
 457     }
 458
 459     wxTheApp->argv = new wxChar*[count + 1];
 460     for (i = 0; i < count; i++)
 461     {
 462         wxString arg(args[i]);
 463         wxTheApp->argv[i] = copystring((const wxChar*)arg);
 464     }
 465     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 466     wxTheApp->argc = count;
 467 }
 468
 469 //// Cleans up any wxWindows internal structures left lying around
 470
 471 void wxApp::CleanUp()
 472 {
 473     //// COMMON CLEANUP
 474
 475 #if wxUSE_LOG
 476     // flush the logged messages if any and install a 'safer' log target: the
 477     // default one (wxLogGui) can't be used after the resources are freed just
 478     // below and the user suppliedo ne might be even more unsafe (using any
 479     // wxWindows GUI function is unsafe starting from now)
 480     wxLog::DontCreateOnDemand();
 481
 482     // this will flush the old messages if any
 483     delete wxLog::SetActiveTarget(new wxLogStderr);
 484 #endif // wxUSE_LOG
 485
 486     // One last chance for pending objects to be cleaned up
 487     wxTheApp->DeletePendingObjects();
 488
 489     wxModule::CleanUpModules();
 490
 491 #if wxUSE_WX_RESOURCES
 492     wxCleanUpResourceSystem();
 493
 494     //  wxDefaultResourceTable->ClearTable();
 495 #endif
 496
 497     // Indicate that the cursor can be freed, so that cursor won't be deleted
 498     // by deleting the bitmap list before g_globalCursor goes out of scope
 499     // (double deletion of the cursor).
 500     wxSetCursor(wxNullCursor);
 501     delete g_globalCursor;
 502     g_globalCursor = NULL;
 503
 504     wxDeleteStockObjects();
 505
 506     // Destroy all GDI lists, etc.
 507     wxDeleteStockLists();
 508
 509     delete wxTheColourDatabase;
 510     wxTheColourDatabase = NULL;
 511
 512     wxBitmap::CleanUpHandlers();
 513
 514     delete[] wxBuffer;
 515     wxBuffer = NULL;
 516
 517     //// WINDOWS-SPECIFIC CLEANUP
 518
 519     wxSetKeyboardHook(FALSE);
 520
 521 #if wxUSE_PENWINDOWS
 522     wxCleanUpPenWin();
 523 #endif
 524
 525     if (wxSTD_FRAME_ICON)
 526         DestroyIcon(wxSTD_FRAME_ICON);
 527     if (wxSTD_MDICHILDFRAME_ICON)
 528         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 529     if (wxSTD_MDIPARENTFRAME_ICON)
 530         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 531
 532     if (wxDEFAULT_FRAME_ICON)
 533         DestroyIcon(wxDEFAULT_FRAME_ICON);
 534     if (wxDEFAULT_MDICHILDFRAME_ICON)
 535         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 536     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 537         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 538
 539     if ( wxDisableButtonBrush )
 540         ::DeleteObject( wxDisableButtonBrush );
 541
 542 #if wxUSE_OLE
 543     ::OleUninitialize();
 544 #endif
 545
 546 #if wxUSE_CTL3D
 547     Ctl3dUnregister(wxhInstance);
 548 #endif
 549
 550     if (wxWinHandleList)
 551         delete wxWinHandleList;
 552
 553     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 554     // create a module for that as it's part of the core.
 555     delete wxPendingEvents;
 556 #if wxUSE_THREADS
 557     delete wxPendingEventsLocker;
 558     // If we don't do the following, we get an apparent memory leak.
 559     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 560 #endif
 561
 562     wxClassInfo::CleanUpClasses();
 563
 564     delete wxTheApp;
 565     wxTheApp = NULL;
 566
 567 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 568     // At this point we want to check if there are any memory
 569     // blocks that aren't part of the wxDebugContext itself,
 570     // as a special case. Then when dumping we need to ignore
 571     // wxDebugContext, too.
 572     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 573     {
 574         wxLogDebug(wxT("There were memory leaks."));
 575         wxDebugContext::Dump();
 576         wxDebugContext::PrintStatistics();
 577     }
 578     //  wxDebugContext::SetStream(NULL, NULL);
 579 #endif
 580
 581 #if wxUSE_LOG
 582     // do it as the very last thing because everything else can log messages
 583     delete wxLog::SetActiveTarget(NULL);
 584 #endif // wxUSE_LOG
 585 }
 586
 587 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 588
 589 // temporarily disable this warning which would be generated in release builds
 590 // because of __try
 591 #ifdef __VISUALC__
 592     #pragma warning(disable: 4715) // not all control paths return a value
 593 #endif // Visual C++
 594
 595 //// Main wxWindows entry point
 596 int wxEntry(WXHINSTANCE hInstance,
 597             WXHINSTANCE WXUNUSED(hPrevInstance),
 598             char *lpCmdLine,
 599             int nCmdShow,
 600             bool enterLoop)
 601 {
 602     // do check for memory leaks on program exit
 603     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 604     //  deallocated memory which may be used to simulate low-memory condition)
 605     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 606 #ifdef __MWERKS__
 607 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 608     // This seems to be necessary since there are 'rogue'
 609     // objects present at this point (perhaps global objects?)
 610     // Setting a checkpoint will ignore them as far as the
 611     // memory checking facility is concerned.
 612     // Of course you may argue that memory allocated in globals should be
 613     // checked, but this is a reasonable compromise.
 614     wxDebugContext::SetCheckpoint();
 615 #endif
 616 #endif
 617     // take everything into a try-except block in release build
 618     // FIXME other compilers must support Win32 SEH (structured exception
 619     //       handling) too, just find the appropriate keyword in their docs!
 620     //       Please note that it's _not_ the same as C++ exceptions!
 621 #if !defined(__WXDEBUG__) && defined(__VISUALC__)
 622     #define CATCH_PROGRAM_EXCEPTIONS
 623
 624     __try {
 625 #else
 626     #undef  CATCH_PROGRAM_EXCEPTIONS
 627 #endif
 628         wxhInstance = (HINSTANCE) hInstance;
 629
 630         if (!wxApp::Initialize())
 631             return 0;
 632
 633         // create the application object or ensure that one already exists
 634         if (!wxTheApp)
 635         {
 636             // The app may have declared a global application object, but we recommend
 637             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 638             // function for delayed, dynamic app object construction.
 639             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 640                          wxT("No initializer - use IMPLEMENT_APP macro.") );
 641
 642             wxTheApp = (*wxApp::GetInitializerFunction()) ();
 643         }
 644
 645         wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 646
 647         // save the WinMain() parameters
 648         wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 649         wxTheApp->m_nCmdShow = nCmdShow;
 650
 651         // GUI-specific initialisation. In fact on Windows we don't have any,
 652         // but this call is provided for compatibility across platforms.
 653         wxTheApp->OnInitGui();
 654
 655         // We really don't want timestamps by default, because it means
 656         // we can't simply double-click on the error message and get to that
 657         // line in the source. So VC++ at least, let's have a sensible default.
 658 #ifdef __VISUALC__
 659         wxLog::SetTimestamp(NULL);
 660 #endif
 661
 662         int retValue = 0;
 663
 664         if ( wxTheApp->OnInit() )
 665         {
 666             if ( enterLoop )
 667             {
 668                 retValue = wxTheApp->OnRun();
 669             }
 670             else
 671                 // We want to initialize, but not run or exit immediately.
 672                 return 1;
 673         }
 674         //else: app initialization failed, so we skipped OnRun()
 675
 676         wxWindow *topWindow = wxTheApp->GetTopWindow();
 677         if ( topWindow )
 678         {
 679             // Forcibly delete the window.
 680             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 681                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 682             {
 683                 topWindow->Close(TRUE);
 684                 wxTheApp->DeletePendingObjects();
 685             }
 686             else
 687             {
 688                 delete topWindow;
 689                 wxTheApp->SetTopWindow(NULL);
 690             }
 691         }
 692
 693         wxTheApp->OnExit();
 694
 695         wxApp::CleanUp();
 696
 697         return retValue;
 698
 699 #ifdef CATCH_PROGRAM_EXCEPTIONS
 700     }
 701     __except ( EXCEPTION_EXECUTE_HANDLER ) {
 702         /*
 703            if ( wxTheApp )
 704            wxTheApp->OnFatalException();
 705          */
 706
 707         // using wxLog would be unsafe here
 708         ::MessageBox(NULL,
 709                      _("Unrecoverable program error detected: "
 710                      " the application will terminate."),
 711                      _("Fatal Error"),
 712                      MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 713
 714         ::ExitProcess(3); // the same exit code as abort()
 715
 716         // NOTREACHED
 717     }
 718 #endif // CATCH_PROGRAM_EXCEPTIONS
 719 }
 720
 721 // restore warning state
 722 #ifdef __VISUALC__
 723     #pragma warning(default: 4715) // not all control paths return a value
 724 #endif // Visual C++
 725
 726 #else /*  _WINDLL  */
 727
 728 //// Entry point for DLLs
 729
 730 int wxEntry(WXHINSTANCE hInstance)
 731 {
 732     wxhInstance = (HINSTANCE) hInstance;
 733     wxApp::Initialize();
 734
 735     // The app may have declared a global application object, but we recommend
 736     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 737     // for delayed, dynamic app object construction.
 738     if (!wxTheApp)
 739     {
 740         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 741                      "No initializer - use IMPLEMENT_APP macro." );
 742
 743         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 744     }
 745
 746     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 747
 748     wxTheApp->argc = 0;
 749     wxTheApp->argv = NULL;
 750
 751     wxTheApp->OnInitGui();
 752
 753     wxTheApp->OnInit();
 754
 755     wxWindow *topWindow = wxTheApp->GetTopWindow();
 756     if ( topWindow && topWindow->GetHWND())
 757     {
 758         topWindow->Show(TRUE);
 759     }
 760
 761     return 1;
 762 }
 763 #endif // _WINDLL
 764
 765 //// Static member initialization
 766
 767 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 768
 769 wxApp::wxApp()
 770 {
 771     m_topWindow = NULL;
 772     wxTheApp = this;
 773     m_wantDebugOutput = TRUE;
 774
 775     argc = 0;
 776     argv = NULL;
 777     m_printMode = wxPRINT_WINDOWS;
 778     m_exitOnFrameDelete = TRUE;
 779     m_auto3D = TRUE;
 780 }
 781
 782 wxApp::~wxApp()
 783 {
 784     // Delete command-line args
 785     int i;
 786     for (i = 0; i < argc; i++)
 787     {
 788         delete[] argv[i];
 789     }
 790     delete[] argv;
 791 }
 792
 793 bool wxApp::Initialized()
 794 {
 795 #ifndef _WINDLL
 796     if (GetTopWindow())
 797         return TRUE;
 798     else
 799         return FALSE;
 800 #endif
 801 #ifdef _WINDLL // Assume initialized if DLL (no way of telling)
 802     return TRUE;
 803 #endif
 804 }
 805
 806 /*
 807  * Get and process a message, returning FALSE if WM_QUIT
 808  * received (and also set the flag telling the app to exit the main loop)
 809  *
 810  */
 811 bool wxApp::DoMessage()
 812 {
 813     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 814     if ( rc == 0 )
 815     {
 816         // got WM_QUIT
 817         m_keepGoing = FALSE;
 818
 819         return FALSE;
 820     }
 821     else if ( rc == -1 )
 822     {
 823         // should never happen, but let's test for it nevertheless
 824         wxLogLastError("GetMessage");
 825     }
 826     else
 827     {
 828 #if wxUSE_THREADS
 829         wxASSERT_MSG( wxThread::IsMain(),
 830                       wxT("only the main thread can process Windows messages") );
 831
 832         static bool s_hadGuiLock = TRUE;
 833         static wxMsgArray s_aSavedMessages;
 834
 835         // if a secondary thread owns is doing GUI calls, save all messages for
 836         // later processing - we can't process them right now because it will
 837         // lead to recursive library calls (and we're not reentrant)
 838         if ( !wxGuiOwnedByMainThread() )
 839         {
 840             s_hadGuiLock = FALSE;
 841
 842             // leave out WM_COMMAND messages: too dangerous, sometimes
 843             // the message will be processed twice
 844             if ( !wxIsWaitingForThread() ||
 845                     s_currentMsg.message != WM_COMMAND )
 846             {
 847                 s_aSavedMessages.Add(s_currentMsg);
 848             }
 849
 850             return TRUE;
 851         }
 852         else
 853         {
 854             // have we just regained the GUI lock? if so, post all of the saved
 855             // messages
 856             //
 857             // FIXME of course, it's not _exactly_ the same as processing the
 858             //       messages normally - expect some things to break...
 859             if ( !s_hadGuiLock )
 860             {
 861                 s_hadGuiLock = TRUE;
 862
 863                 size_t count = s_aSavedMessages.Count();
 864                 for ( size_t n = 0; n < count; n++ )
 865                 {
 866                     MSG& msg = s_aSavedMessages[n];
 867
 868                     if ( !ProcessMessage((WXMSG *)&msg) )
 869                     {
 870                         ::TranslateMessage(&msg);
 871                         ::DispatchMessage(&msg);
 872                     }
 873                 }
 874
 875                 s_aSavedMessages.Empty();
 876             }
 877         }
 878 #endif // wxUSE_THREADS
 879
 880         // Process the message
 881         if ( !ProcessMessage((WXMSG *)&s_currentMsg) )
 882         {
 883             ::TranslateMessage(&s_currentMsg);
 884             ::DispatchMessage(&s_currentMsg);
 885         }
 886     }
 887
 888     return TRUE;
 889 }
 890
 891 /*
 892  * Keep trying to process messages until WM_QUIT
 893  * received.
 894  *
 895  * If there are messages to be processed, they will all be
 896  * processed and OnIdle will not be called.
 897  * When there are no more messages, OnIdle is called.
 898  * If OnIdle requests more time,
 899  * it will be repeatedly called so long as there are no pending messages.
 900  * A 'feature' of this is that once OnIdle has decided that no more processing
 901  * is required, then it won't get processing time until further messages
 902  * are processed (it'll sit in DoMessage).
 903  */
 904
 905 int wxApp::MainLoop()
 906 {
 907     m_keepGoing = TRUE;
 908
 909     while ( m_keepGoing )
 910     {
 911 #if wxUSE_THREADS
 912         wxMutexGuiLeaveOrEnter();
 913 #endif // wxUSE_THREADS
 914
 915         while ( !::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
 916                 ProcessIdle() )
 917         {
 918         }
 919
 920
 921         DoMessage();
 922     }
 923
 924     return s_currentMsg.wParam;
 925 }
 926
 927 // Returns TRUE if more time is needed.
 928 bool wxApp::ProcessIdle()
 929 {
 930     wxIdleEvent event;
 931     event.SetEventObject(this);
 932     ProcessEvent(event);
 933
 934     return event.MoreRequested();
 935 }
 936
 937 void wxApp::ExitMainLoop()
 938 {
 939     m_keepGoing = FALSE;
 940 }
 941
 942 bool wxApp::Pending()
 943 {
 944     return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0);
 945 }
 946
 947 void wxApp::Dispatch()
 948 {
 949     DoMessage();
 950 }
 951
 952 /*
 953  * Give all windows a chance to preprocess
 954  * the message. Some may have accelerator tables, or have
 955  * MDI complications.
 956  */
 957
 958 bool wxApp::ProcessMessage(WXMSG *wxmsg)
 959 {
 960     MSG *msg = (MSG *)wxmsg;
 961     HWND hWnd = msg->hwnd;
 962     wxWindow *wndThis = wxFindWinFromHandle((WXHWND)hWnd), *wnd;
 963
 964     // for some composite controls (like a combobox), wndThis might be NULL
 965     // because the subcontrol is not a wxWindow, but only the control itself
 966     // is - try to catch this case
 967     while ( hWnd && !wndThis )
 968     {
 969         hWnd = ::GetParent(hWnd);
 970         wndThis = wxFindWinFromHandle((WXHWND)hWnd);
 971     }
 972
 973     // Try translations first; find the youngest window with
 974     // a translation table.
 975     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 976     {
 977         if ( wnd->MSWTranslateMessage(wxmsg) )
 978             return TRUE;
 979     }
 980
 981     // Anyone for a non-translation message? Try youngest descendants first.
 982     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 983     {
 984         if ( wnd->MSWProcessMessage(wxmsg) )
 985             return TRUE;
 986     }
 987
 988     return FALSE;
 989 }
 990
 991 void wxApp::OnIdle(wxIdleEvent& event)
 992 {
 993     static bool s_inOnIdle = FALSE;
 994
 995     // Avoid recursion (via ProcessEvent default case)
 996     if ( s_inOnIdle )
 997         return;
 998
 999     s_inOnIdle = TRUE;
1000
1001     // 'Garbage' collection of windows deleted with Close().
1002     DeletePendingObjects();
1003
1004 #if wxUSE_LOG
1005     // flush the logged messages if any
1006     wxLog *pLog = wxLog::GetActiveTarget();
1007     if ( pLog != NULL && pLog->HasPendingMessages() )
1008         pLog->Flush();
1009 #endif // wxUSE_LOG
1010
1011     // Send OnIdle events to all windows
1012     if ( SendIdleEvents() )
1013     {
1014         // SendIdleEvents() returns TRUE if at least one window requested more
1015         // idle events
1016         event.RequestMore(TRUE);
1017     }
1018
1019     // If they are pending events, we must process them: pending events are
1020     // either events to the threads other than main or events posted with
1021     // wxPostEvent() functions
1022     ProcessPendingEvents();
1023
1024     s_inOnIdle = FALSE;
1025 }
1026
1027 // Send idle event to all top-level windows
1028 bool wxApp::SendIdleEvents()
1029 {
1030     bool needMore = FALSE;
1031
1032     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1033     while (node)
1034     {
1035         wxWindow* win = node->GetData();
1036         if (SendIdleEvents(win))
1037             needMore = TRUE;
1038         node = node->GetNext();
1039     }
1040
1041     return needMore;
1042 }
1043
1044 // Send idle event to window and all subwindows
1045 bool wxApp::SendIdleEvents(wxWindow* win)
1046 {
1047     bool needMore = FALSE;
1048
1049     wxIdleEvent event;
1050     event.SetEventObject(win);
1051     win->GetEventHandler()->ProcessEvent(event);
1052
1053     if (event.MoreRequested())
1054         needMore = TRUE;
1055
1056     wxNode* node = win->GetChildren().First();
1057     while (node)
1058     {
1059         wxWindow* win = (wxWindow*) node->Data();
1060         if (SendIdleEvents(win))
1061             needMore = TRUE;
1062
1063         node = node->Next();
1064     }
1065     return needMore;
1066 }
1067
1068 void wxApp::DeletePendingObjects()
1069 {
1070     wxNode *node = wxPendingDelete.First();
1071     while (node)
1072     {
1073         wxObject *obj = (wxObject *)node->Data();
1074
1075         delete obj;
1076
1077         if (wxPendingDelete.Member(obj))
1078             delete node;
1079
1080         // Deleting one object may have deleted other pending
1081         // objects, so start from beginning of list again.
1082         node = wxPendingDelete.First();
1083     }
1084 }
1085
1086 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1087 {
1088     if (GetTopWindow())
1089         GetTopWindow()->Close(TRUE);
1090 }
1091
1092 // Default behaviour: close the application with prompts. The
1093 // user can veto the close, and therefore the end session.
1094 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1095 {
1096     if (GetTopWindow())
1097     {
1098         if (!GetTopWindow()->Close(!event.CanVeto()))
1099             event.Veto(TRUE);
1100     }
1101 }
1102
1103 /* static */
1104 int wxApp::GetComCtl32Version()
1105 {
1106     // cache the result
1107     static int s_verComCtl32 = -1;
1108
1109     wxCRIT_SECT_DECLARE(csComCtl32);
1110     wxCRIT_SECT_LOCKER(lock, csComCtl32);
1111
1112     if ( s_verComCtl32 == -1 )
1113     {
1114         // initally assume no comctl32.dll at all
1115         s_verComCtl32 = 0;
1116
1117         // do we have it?
1118         HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
1119
1120         // if so, then we can check for the version
1121         if ( hModuleComCtl32 )
1122         {
1123             // try to use DllGetVersion() if available in _headers_
1124             #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
1125                 DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
1126                     ::GetProcAddress(hModuleComCtl32, _T("DllGetVersion"));
1127                 if ( pfnDllGetVersion )
1128                 {
1129                     DLLVERSIONINFO dvi;
1130                     dvi.cbSize = sizeof(dvi);
1131
1132                     HRESULT hr = (*pfnDllGetVersion)(&dvi);
1133                     if ( FAILED(hr) )
1134                     {
1135                         wxLogApiError(_T("DllGetVersion"), hr);
1136                     }
1137                     else
1138                     {
1139                         // this is incompatible with _WIN32_IE values, but
1140                         // compatible with the other values returned by
1141                         // GetComCtl32Version()
1142                         s_verComCtl32 = 100*dvi.dwMajorVersion +
1143                                             dvi.dwMinorVersion;
1144                     }
1145                 }
1146             #endif
1147                 // DllGetVersion() unavailable either during compile or
1148                 // run-time, try to guess the version otherwise
1149                 if ( !s_verComCtl32 )
1150                 {
1151                     // InitCommonControlsEx is unique to 4.70 and later
1152                     FARPROC theProc = ::GetProcAddress
1153                                         (
1154                                          hModuleComCtl32,
1155 #if defined(__BORLANDC__) && (__BORLANDC__ <= 0x520)
1156                                          "InitCommonControlsEx"
1157 #else
1158                                          _T("InitCommonControlsEx")
1159 #endif
1160                                         );
1161
1162                     if ( !theProc )
1163                     {
1164                         // not found, must be 4.00
1165                         s_verComCtl32 = 400;
1166                     }
1167                     else
1168                     {
1169                         // many symbols appeared in comctl32 4.71, could use
1170                         // any of them except may be DllInstall
1171                         theProc = ::GetProcAddress
1172                                     (
1173                                      hModuleComCtl32,
1174 #if defined(__BORLANDC__) && (__BORLANDC__ <= 0x520)
1175                                      "InitializeFlatSB"
1176 #else
1177                                      _T("InitializeFlatSB")
1178 #endif
1179                                     );
1180                         if ( !theProc )
1181                         {
1182                             // not found, must be 4.70
1183                             s_verComCtl32 = 470;
1184                         }
1185                         else
1186                         {
1187                             // found, must be 4.71
1188                             s_verComCtl32 = 471;
1189                         }
1190                     }
1191                 }
1192         }
1193     }
1194
1195     return s_verComCtl32;
1196 }
1197
1198 void wxExit()
1199 {
1200     wxLogError(_("Fatal error: exiting"));
1201
1202     wxApp::CleanUp();
1203 }
1204
1205 // Yield to incoming messages
1206 bool wxYield()
1207 {
1208     // we don't want to process WM_QUIT from here - it should be processed in
1209     // the main event loop in order to stop it
1210
1211     MSG msg;
1212     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1213             msg.message != WM_QUIT )
1214     {
1215         if ( !wxTheApp->DoMessage() )
1216             break;
1217     }
1218
1219     // If they are pending events, we must process them.
1220     wxTheApp->ProcessPendingEvents();
1221
1222     return TRUE;
1223 }
1224
1225 //-----------------------------------------------------------------------------
1226 // wxWakeUpIdle
1227 //-----------------------------------------------------------------------------
1228
1229 void wxWakeUpIdle()
1230 {
1231     // Send the top window a dummy message so idle handler processing will
1232     // start up again.  Doing it this way ensures that the idle handler
1233     // wakes up in the right thread (see also wxWakeUpMainThread() which does
1234     // the same for the main app thread only)
1235     wxWindow *topWindow = wxTheApp->GetTopWindow();
1236     if ( topWindow )
1237     {
1238         if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
1239         {
1240             // should never happen
1241             wxLogLastError("PostMessage(WM_NULL)");
1242         }
1243     }
1244 }
1245
1246 //-----------------------------------------------------------------------------
1247
1248 wxIcon
1249 wxApp::GetStdIcon(int which) const
1250 {
1251     switch(which)
1252     {
1253         case wxICON_INFORMATION:
1254             return wxIcon("wxICON_INFO");
1255
1256         case wxICON_QUESTION:
1257             return wxIcon("wxICON_QUESTION");
1258
1259         case wxICON_EXCLAMATION:
1260             return wxIcon("wxICON_WARNING");
1261
1262         default:
1263             wxFAIL_MSG(wxT("requested non existent standard icon"));
1264             // still fall through
1265
1266         case wxICON_HAND:
1267             return wxIcon("wxICON_ERROR");
1268     }
1269 }
1270
1271 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1272 // if in a separate file. So include it here to ensure it's linked.
1273 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL))
1274 #include "main.cpp"
1275 #endif