src/msw/app.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        app.cpp
   3 // Purpose:     wxApp
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "app.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #if defined(__BORLANDC__)
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/frame.h"
  33     #include "wx/app.h"
  34     #include "wx/utils.h"
  35     #include "wx/gdicmn.h"
  36     #include "wx/pen.h"
  37     #include "wx/brush.h"
  38     #include "wx/cursor.h"
  39     #include "wx/icon.h"
  40     #include "wx/palette.h"
  41     #include "wx/dc.h"
  42     #include "wx/dialog.h"
  43     #include "wx/msgdlg.h"
  44     #include "wx/intl.h"
  45     #include "wx/dynarray.h"
  46     #include "wx/wxchar.h"
  47     #include "wx/icon.h"
  48 #endif
  49
  50 #include "wx/log.h"
  51 #include "wx/module.h"
  52
  53 #include "wx/msw/private.h"
  54
  55 #if wxUSE_THREADS
  56     #include "wx/thread.h"
  57
  58     // define the array of MSG strutures
  59     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  60
  61     #include "wx/arrimpl.cpp"
  62
  63     WX_DEFINE_OBJARRAY(wxMsgArray);
  64 #endif // wxUSE_THREADS
  65
  66 #if wxUSE_WX_RESOURCES
  67     #include "wx/resource.h"
  68 #endif
  69
  70 // OLE is used for drag-and-drop, clipboard, OLE Automation...
  71 #ifndef wxUSE_NORLANDER_HEADERS
  72 #if defined(__GNUWIN32__) || defined(__SC__) || defined(__SALFORDC__)
  73     #undef wxUSE_OLE
  74
  75     #define  wxUSE_OLE 0
  76 #endif // broken compilers
  77 #endif
  78
  79 #if wxUSE_OLE
  80     #include <ole2.h>
  81 #endif
  82
  83 #include <string.h>
  84 #include <ctype.h>
  85
  86 #if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
  87     #include <commctrl.h>
  88 #endif
  89
  90 #include "wx/msw/msvcrt.h"
  91
  92 // ----------------------------------------------------------------------------
  93 // conditional compilation
  94 // ----------------------------------------------------------------------------
  95
  96 // The macro _WIN32_IE is defined by commctrl.h (unless it had already been
  97 // defined before) and shows us what common control features are available
  98 // during the compile time (it doesn't mean that they will be available during
  99 // the run-time, use GetComCtl32Version() to test for them!). The possible
 100 // values are:
 101 //
 102 // 0x0200     for comctl32.dll 4.00 shipped with Win95/NT 4.0
 103 // 0x0300                      4.70              IE 3.x
 104 // 0x0400                      4.71              IE 4.0
 105 // 0x0401                      4.72              IE 4.01 and Win98
 106 // 0x0500                      5.00              IE 5.x and NT 5.0 (Win2000)
 107
 108 #ifndef _WIN32_IE
 109     // minimal set of features by default
 110     #define _WIN32_IE 0x0200
 111 #endif
 112
 113 #if _WIN32_IE >= 0x0300
 114     #include <shlwapi.h>
 115 #endif
 116
 117 // ---------------------------------------------------------------------------
 118 // global variables
 119 // ---------------------------------------------------------------------------
 120
 121 extern wxChar *wxBuffer;
 122 extern wxChar *wxOsVersion;
 123 extern wxList *wxWinHandleList;
 124 extern wxList WXDLLEXPORT wxPendingDelete;
 125 extern void wxSetKeyboardHook(bool doIt);
 126 extern wxCursor *g_globalCursor;
 127
 128 MSG s_currentMsg;
 129 wxApp *wxTheApp = NULL;
 130
 131 // FIXME why not const? and not static?
 132
 133 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 134 //     with NR suffix - wxWindow::MSWCreate() supposes this
 135 wxChar wxFrameClassName[]         = wxT("wxFrameClass");
 136 wxChar wxFrameClassNameNoRedraw[] = wxT("wxFrameClassNR");
 137 wxChar wxMDIFrameClassName[]      = wxT("wxMDIFrameClass");
 138 wxChar wxMDIFrameClassNameNoRedraw[] = wxT("wxMDIFrameClassNR");
 139 wxChar wxMDIChildFrameClassName[] = wxT("wxMDIChildFrameClass");
 140 wxChar wxMDIChildFrameClassNameNoRedraw[] = wxT("wxMDIChildFrameClassNR");
 141 wxChar wxPanelClassName[]         = wxT("wxPanelClass");
 142 wxChar wxCanvasClassName[]        = wxT("wxCanvasClass");
 143
 144 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 145 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 146 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 147
 148 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 149 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 150 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 151
 152 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 153
 154 LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 155
 156 #if wxUSE_RICHEDIT
 157     // the handle to richedit DLL and the version of the DLL loaded
 158     static HINSTANCE gs_hRichEdit = (HINSTANCE)NULL;
 159     static int gs_verRichEdit = -1;
 160 #endif
 161
 162 // ===========================================================================
 163 // implementation
 164 // ===========================================================================
 165
 166 // ---------------------------------------------------------------------------
 167 // wxApp
 168 // ---------------------------------------------------------------------------
 169
 170 #if !USE_SHARED_LIBRARY
 171     IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 172
 173     BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 174         EVT_IDLE(wxApp::OnIdle)
 175         EVT_END_SESSION(wxApp::OnEndSession)
 176         EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 177     END_EVENT_TABLE()
 178 #endif
 179
 180 //// Initialize
 181 bool wxApp::Initialize()
 182 {
 183     // Some people may wish to use this, but
 184     // probably it shouldn't be here by default.
 185 #ifdef __WXDEBUG__
 186     //    wxRedirectIOToConsole();
 187 #endif
 188
 189     wxBuffer = new wxChar[1500]; // FIXME
 190
 191     wxClassInfo::InitializeClasses();
 192
 193 #if wxUSE_RESOURCES
 194     wxGetResource(wxT("wxWindows"), wxT("OsVersion"), &wxOsVersion);
 195 #endif
 196
 197 #if wxUSE_THREADS
 198     wxPendingEventsLocker = new wxCriticalSection;
 199 #endif
 200
 201     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 202     wxTheColourDatabase->Initialize();
 203
 204     wxInitializeStockLists();
 205     wxInitializeStockObjects();
 206
 207 #if wxUSE_WX_RESOURCES
 208     wxInitializeResourceSystem();
 209 #endif
 210
 211     wxBitmap::InitStandardHandlers();
 212
 213 #if defined(__WIN95__)
 214     InitCommonControls();
 215
 216 #endif // __WIN95__
 217
 218 #if wxUSE_OLE
 219
 220 #ifdef __WIN16__
 221     // for OLE, enlarge message queue to be as large as possible
 222     int iMsg = 96;
 223     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 224         ;
 225 #endif // Win16
 226     // we need to initialize OLE library
 227     if ( FAILED(::OleInitialize(NULL)) )
 228         wxLogError(_("Cannot initialize OLE"));
 229 #endif // wxUSE_OLE
 230
 231 #if wxUSE_CTL3D
 232     if (!Ctl3dRegister(wxhInstance))
 233         wxLogError(wxT("Cannot register CTL3D"));
 234
 235     Ctl3dAutoSubclass(wxhInstance);
 236 #endif
 237
 238     g_globalCursor = new wxCursor;
 239
 240     // VZ: these icons are not in wx.rc anyhow (but should they?)!
 241 #if 0
 242     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
 243     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
 244     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 245
 246     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
 247     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
 248     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
 249 #endif // 0
 250
 251     RegisterWindowClasses();
 252
 253     // Create the brush for disabling bitmap buttons
 254
 255     LOGBRUSH lb;
 256     lb.lbStyle = BS_PATTERN;
 257     lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
 258     if ( lb.lbHatch )
 259     {
 260         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
 261         ::DeleteObject( (HGDIOBJ)lb.lbHatch );
 262     }
 263     //else: wxWindows resources are probably not linked in
 264
 265 #if wxUSE_PENWINDOWS
 266     wxRegisterPenWin();
 267 #endif
 268
 269     wxWinHandleList = new wxList(wxKEY_INTEGER);
 270
 271     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 272     // PLEASE DO NOT ALTER THIS.
 273 #if defined(__VISUALC__) && !defined(WXMAKINGDLL)
 274     extern char wxDummyChar;
 275     if (wxDummyChar) wxDummyChar++;
 276 #endif
 277
 278     wxSetKeyboardHook(TRUE);
 279
 280     wxModule::RegisterModules();
 281     if (!wxModule::InitializeModules())
 282         return FALSE;
 283     return TRUE;
 284 }
 285
 286 // ---------------------------------------------------------------------------
 287 // RegisterWindowClasses
 288 // ---------------------------------------------------------------------------
 289
 290 // TODO we should only register classes really used by the app. For this it
 291 //      would be enough to just delay the class registration until an attempt
 292 //      to create a window of this class is made.
 293 bool wxApp::RegisterWindowClasses()
 294 {
 295     WNDCLASS wndclass;
 296
 297     // for each class we register one with CS_(V|H)REDRAW style and one
 298     // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
 299     static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 300     static const long styleNoRedraw = CS_DBLCLKS;
 301
 302     // the fields which are common to all classes
 303     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 304     wndclass.cbClsExtra    = 0;
 305     wndclass.cbWndExtra    = sizeof( DWORD ); // VZ: what is this DWORD used for?
 306     wndclass.hInstance     = wxhInstance;
 307     wndclass.hIcon         = (HICON) NULL;
 308     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 309     wndclass.lpszMenuName  = NULL;
 310
 311     // Register the frame window class.
 312     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
 313     wndclass.lpszClassName = wxFrameClassName;
 314     wndclass.style         = styleNormal;
 315
 316     if ( !RegisterClass(&wndclass) )
 317     {
 318         wxLogLastError("RegisterClass(frame)");
 319
 320         return FALSE;
 321     }
 322
 323     // "no redraw" frame
 324     wndclass.lpszClassName = wxFrameClassNameNoRedraw;
 325     wndclass.style         = styleNoRedraw;
 326
 327     if ( !RegisterClass(&wndclass) )
 328     {
 329         wxLogLastError("RegisterClass(no redraw frame)");
 330
 331         return FALSE;
 332     }
 333
 334     // Register the MDI frame window class.
 335     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
 336     wndclass.lpszClassName = wxMDIFrameClassName;
 337     wndclass.style         = styleNormal;
 338
 339     if ( !RegisterClass(&wndclass) )
 340     {
 341         wxLogLastError("RegisterClass(MDI parent)");
 342
 343         return FALSE;
 344     }
 345
 346     // "no redraw" MDI frame
 347     wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
 348     wndclass.style         = styleNoRedraw;
 349
 350     if ( !RegisterClass(&wndclass) )
 351     {
 352         wxLogLastError("RegisterClass(no redraw MDI parent frame)");
 353
 354         return FALSE;
 355     }
 356
 357     // Register the MDI child frame window class.
 358     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 359     wndclass.lpszClassName = wxMDIChildFrameClassName;
 360     wndclass.style         = styleNormal;
 361
 362     if ( !RegisterClass(&wndclass) )
 363     {
 364         wxLogLastError("RegisterClass(MDI child)");
 365
 366         return FALSE;
 367     }
 368
 369     // "no redraw" MDI child frame
 370     wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
 371     wndclass.style         = styleNoRedraw;
 372
 373     if ( !RegisterClass(&wndclass) )
 374     {
 375         wxLogLastError("RegisterClass(no redraw MDI child)");
 376
 377         return FALSE;
 378     }
 379
 380     // Register the panel window class.
 381     wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 382     wndclass.lpszClassName = wxPanelClassName;
 383     wndclass.style         = styleNormal;
 384
 385     if ( !RegisterClass(&wndclass) )
 386     {
 387         wxLogLastError("RegisterClass(panel)");
 388
 389         return FALSE;
 390     }
 391
 392     // Register the canvas and textsubwindow class name
 393     wndclass.hbrBackground = (HBRUSH)NULL;
 394     wndclass.lpszClassName = wxCanvasClassName;
 395
 396     if ( !RegisterClass(&wndclass) )
 397     {
 398         wxLogLastError("RegisterClass(canvas)");
 399
 400         return FALSE;
 401     }
 402
 403     return TRUE;
 404 }
 405
 406 // ---------------------------------------------------------------------------
 407 // Convert Windows to argc, argv style
 408 // ---------------------------------------------------------------------------
 409
 410 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 411 {
 412     wxStringList args;
 413
 414     wxString cmdLine(lpCmdLine);
 415     int count = 0;
 416
 417     // Get application name
 418     wxChar name[260]; // 260 is MAX_PATH value from windef.h
 419     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 420
 421     args.Add(name);
 422     count++;
 423
 424     wxStrcpy(name, wxFileNameFromPath(name));
 425     wxStripExtension(name);
 426     wxTheApp->SetAppName(name);
 427
 428     // Break up string
 429     // Treat strings enclosed in double-quotes as single arguments
 430     int i = 0;
 431     int len = cmdLine.Length();
 432     while (i < len)
 433     {
 434         // Skip whitespace
 435         while ((i < len) && wxIsspace(cmdLine.GetChar(i)))
 436             i ++;
 437
 438         if (i < len)
 439         {
 440             if (cmdLine.GetChar(i) == wxT('"')) // We found the start of a string
 441             {
 442                 i ++;
 443                 int first = i;
 444                 while ((i < len) && (cmdLine.GetChar(i) != wxT('"')))
 445                     i ++;
 446
 447                 wxString arg(cmdLine.Mid(first, (i - first)));
 448
 449                 args.Add(arg);
 450                 count ++;
 451
 452                 if (i < len)
 453                     i ++; // Skip past 2nd quote
 454             }
 455             else // Unquoted argument
 456             {
 457                 int first = i;
 458                 while ((i < len) && !wxIsspace(cmdLine.GetChar(i)))
 459                     i ++;
 460
 461                 wxString arg(cmdLine.Mid(first, (i - first)));
 462
 463                 args.Add(arg);
 464                 count ++;
 465             }
 466         }
 467     }
 468
 469     wxTheApp->argv = new wxChar*[count + 1];
 470     for (i = 0; i < count; i++)
 471     {
 472         wxString arg(args[i]);
 473         wxTheApp->argv[i] = copystring((const wxChar*)arg);
 474     }
 475     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 476     wxTheApp->argc = count;
 477 }
 478
 479 //// Cleans up any wxWindows internal structures left lying around
 480
 481 void wxApp::CleanUp()
 482 {
 483     //// COMMON CLEANUP
 484
 485 #if wxUSE_LOG
 486     // flush the logged messages if any and install a 'safer' log target: the
 487     // default one (wxLogGui) can't be used after the resources are freed just
 488     // below and the user suppliedo ne might be even more unsafe (using any
 489     // wxWindows GUI function is unsafe starting from now)
 490     wxLog::DontCreateOnDemand();
 491
 492     // this will flush the old messages if any
 493     delete wxLog::SetActiveTarget(new wxLogStderr);
 494 #endif // wxUSE_LOG
 495
 496     // One last chance for pending objects to be cleaned up
 497     wxTheApp->DeletePendingObjects();
 498
 499     wxModule::CleanUpModules();
 500
 501 #if wxUSE_WX_RESOURCES
 502     wxCleanUpResourceSystem();
 503
 504     //  wxDefaultResourceTable->ClearTable();
 505 #endif
 506
 507     // Indicate that the cursor can be freed, so that cursor won't be deleted
 508     // by deleting the bitmap list before g_globalCursor goes out of scope
 509     // (double deletion of the cursor).
 510     wxSetCursor(wxNullCursor);
 511     delete g_globalCursor;
 512     g_globalCursor = NULL;
 513
 514     wxDeleteStockObjects();
 515
 516     // Destroy all GDI lists, etc.
 517     wxDeleteStockLists();
 518
 519     delete wxTheColourDatabase;
 520     wxTheColourDatabase = NULL;
 521
 522     wxBitmap::CleanUpHandlers();
 523
 524     delete[] wxBuffer;
 525     wxBuffer = NULL;
 526
 527     //// WINDOWS-SPECIFIC CLEANUP
 528
 529     wxSetKeyboardHook(FALSE);
 530
 531 #if wxUSE_RICHEDIT
 532     if (gs_hRichEdit != (HINSTANCE) NULL)
 533         FreeLibrary(gs_hRichEdit);
 534 #endif
 535
 536 #if wxUSE_PENWINDOWS
 537     wxCleanUpPenWin();
 538 #endif
 539
 540     if (wxSTD_FRAME_ICON)
 541         DestroyIcon(wxSTD_FRAME_ICON);
 542     if (wxSTD_MDICHILDFRAME_ICON)
 543         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 544     if (wxSTD_MDIPARENTFRAME_ICON)
 545         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 546
 547     if (wxDEFAULT_FRAME_ICON)
 548         DestroyIcon(wxDEFAULT_FRAME_ICON);
 549     if (wxDEFAULT_MDICHILDFRAME_ICON)
 550         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 551     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 552         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 553
 554     if ( wxDisableButtonBrush )
 555         ::DeleteObject( wxDisableButtonBrush );
 556
 557 #if wxUSE_OLE
 558     ::OleUninitialize();
 559 #endif
 560
 561 #if wxUSE_CTL3D
 562     Ctl3dUnregister(wxhInstance);
 563 #endif
 564
 565     if (wxWinHandleList)
 566         delete wxWinHandleList;
 567
 568     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 569     // create a module for that as it's part of the core.
 570     delete wxPendingEvents;
 571 #if wxUSE_THREADS
 572     delete wxPendingEventsLocker;
 573     // If we don't do the following, we get an apparent memory leak.
 574     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 575 #endif
 576
 577     wxClassInfo::CleanUpClasses();
 578
 579     delete wxTheApp;
 580     wxTheApp = NULL;
 581
 582 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 583     // At this point we want to check if there are any memory
 584     // blocks that aren't part of the wxDebugContext itself,
 585     // as a special case. Then when dumping we need to ignore
 586     // wxDebugContext, too.
 587     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 588     {
 589         wxLogDebug(wxT("There were memory leaks."));
 590         wxDebugContext::Dump();
 591         wxDebugContext::PrintStatistics();
 592     }
 593     //  wxDebugContext::SetStream(NULL, NULL);
 594 #endif
 595
 596 #if wxUSE_LOG
 597     // do it as the very last thing because everything else can log messages
 598     delete wxLog::SetActiveTarget(NULL);
 599 #endif // wxUSE_LOG
 600 }
 601
 602 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 603
 604 // temporarily disable this warning which would be generated in release builds
 605 // because of __try
 606 #ifdef __VISUALC__
 607     #pragma warning(disable: 4715) // not all control paths return a value
 608 #endif // Visual C++
 609
 610 //// Main wxWindows entry point
 611 int wxEntry(WXHINSTANCE hInstance,
 612             WXHINSTANCE WXUNUSED(hPrevInstance),
 613             char *lpCmdLine,
 614             int nCmdShow,
 615             bool enterLoop)
 616 {
 617     // do check for memory leaks on program exit
 618     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 619     //  deallocated memory which may be used to simulate low-memory condition)
 620     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 621 #ifdef __MWERKS__
 622 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 623     // This seems to be necessary since there are 'rogue'
 624     // objects present at this point (perhaps global objects?)
 625     // Setting a checkpoint will ignore them as far as the
 626     // memory checking facility is concerned.
 627     // Of course you may argue that memory allocated in globals should be
 628     // checked, but this is a reasonable compromise.
 629     wxDebugContext::SetCheckpoint();
 630 #endif
 631 #endif
 632     // take everything into a try-except block in release build
 633     // FIXME other compilers must support Win32 SEH (structured exception
 634     //       handling) too, just find the appropriate keyword in their docs!
 635     //       Please note that it's _not_ the same as C++ exceptions!
 636 #if !defined(__WXDEBUG__) && defined(__VISUALC__)
 637     #define CATCH_PROGRAM_EXCEPTIONS
 638
 639     __try {
 640 #else
 641     #undef  CATCH_PROGRAM_EXCEPTIONS
 642 #endif
 643         wxhInstance = (HINSTANCE) hInstance;
 644
 645         if (!wxApp::Initialize())
 646             return 0;
 647
 648         // create the application object or ensure that one already exists
 649         if (!wxTheApp)
 650         {
 651             // The app may have declared a global application object, but we recommend
 652             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 653             // function for delayed, dynamic app object construction.
 654             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 655                          wxT("No initializer - use IMPLEMENT_APP macro.") );
 656
 657             wxTheApp = (*wxApp::GetInitializerFunction()) ();
 658         }
 659
 660         wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 661
 662         // save the WinMain() parameters
 663         wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 664         wxTheApp->m_nCmdShow = nCmdShow;
 665
 666         // GUI-specific initialisation. In fact on Windows we don't have any,
 667         // but this call is provided for compatibility across platforms.
 668         wxTheApp->OnInitGui();
 669
 670         // We really don't want timestamps by default, because it means
 671         // we can't simply double-click on the error message and get to that
 672         // line in the source. So VC++ at least, let's have a sensible default.
 673 #ifdef __VISUALC__
 674         wxLog::SetTimestamp(NULL);
 675 #endif
 676
 677         int retValue = 0;
 678
 679         if ( wxTheApp->OnInit() )
 680         {
 681             if ( enterLoop )
 682             {
 683                 retValue = wxTheApp->OnRun();
 684             }
 685             else
 686                 // We want to initialize, but not run or exit immediately.
 687                 return 1;
 688         }
 689         //else: app initialization failed, so we skipped OnRun()
 690
 691         wxWindow *topWindow = wxTheApp->GetTopWindow();
 692         if ( topWindow )
 693         {
 694             // Forcibly delete the window.
 695             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 696                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 697             {
 698                 topWindow->Close(TRUE);
 699                 wxTheApp->DeletePendingObjects();
 700             }
 701             else
 702             {
 703                 delete topWindow;
 704                 wxTheApp->SetTopWindow(NULL);
 705             }
 706         }
 707
 708         wxTheApp->OnExit();
 709
 710         wxApp::CleanUp();
 711
 712         return retValue;
 713
 714 #ifdef CATCH_PROGRAM_EXCEPTIONS
 715     }
 716     __except ( EXCEPTION_EXECUTE_HANDLER ) {
 717         /*
 718            if ( wxTheApp )
 719            wxTheApp->OnFatalException();
 720          */
 721
 722         // using wxLog would be unsafe here
 723         ::MessageBox(NULL,
 724                      _("Unrecoverable program error detected: "
 725                      " the application will terminate."),
 726                      _("Fatal Error"),
 727                      MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 728
 729         ::ExitProcess(3); // the same exit code as abort()
 730
 731         // NOTREACHED
 732     }
 733 #endif // CATCH_PROGRAM_EXCEPTIONS
 734 }
 735
 736 // restore warning state
 737 #ifdef __VISUALC__
 738     #pragma warning(default: 4715) // not all control paths return a value
 739 #endif // Visual C++
 740
 741 #else /*  _WINDLL  */
 742
 743 //// Entry point for DLLs
 744
 745 int wxEntry(WXHINSTANCE hInstance)
 746 {
 747     wxhInstance = (HINSTANCE) hInstance;
 748     wxApp::Initialize();
 749
 750     // The app may have declared a global application object, but we recommend
 751     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 752     // for delayed, dynamic app object construction.
 753     if (!wxTheApp)
 754     {
 755         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 756                      "No initializer - use IMPLEMENT_APP macro." );
 757
 758         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 759     }
 760
 761     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 762
 763     wxTheApp->argc = 0;
 764     wxTheApp->argv = NULL;
 765
 766     wxTheApp->OnInitGui();
 767
 768     wxTheApp->OnInit();
 769
 770     wxWindow *topWindow = wxTheApp->GetTopWindow();
 771     if ( topWindow && topWindow->GetHWND())
 772     {
 773         topWindow->Show(TRUE);
 774     }
 775
 776     return 1;
 777 }
 778 #endif // _WINDLL
 779
 780 //// Static member initialization
 781
 782 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 783
 784 wxApp::wxApp()
 785 {
 786     m_topWindow = NULL;
 787     wxTheApp = this;
 788     m_wantDebugOutput = TRUE;
 789
 790     argc = 0;
 791     argv = NULL;
 792     m_printMode = wxPRINT_WINDOWS;
 793     m_exitOnFrameDelete = TRUE;
 794     m_auto3D = TRUE;
 795 }
 796
 797 wxApp::~wxApp()
 798 {
 799     // Delete command-line args
 800     int i;
 801     for (i = 0; i < argc; i++)
 802     {
 803         delete[] argv[i];
 804     }
 805     delete[] argv;
 806 }
 807
 808 bool wxApp::Initialized()
 809 {
 810 #ifndef _WINDLL
 811     if (GetTopWindow())
 812         return TRUE;
 813     else
 814         return FALSE;
 815 #endif
 816 #ifdef _WINDLL // Assume initialized if DLL (no way of telling)
 817     return TRUE;
 818 #endif
 819 }
 820
 821 /*
 822  * Get and process a message, returning FALSE if WM_QUIT
 823  * received (and also set the flag telling the app to exit the main loop)
 824  *
 825  */
 826 bool wxApp::DoMessage()
 827 {
 828     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 829     if ( rc == 0 )
 830     {
 831         // got WM_QUIT
 832         m_keepGoing = FALSE;
 833
 834         return FALSE;
 835     }
 836     else if ( rc == -1 )
 837     {
 838         // should never happen, but let's test for it nevertheless
 839         wxLogLastError("GetMessage");
 840     }
 841     else
 842     {
 843 #if wxUSE_THREADS
 844         wxASSERT_MSG( wxThread::IsMain(),
 845                       wxT("only the main thread can process Windows messages") );
 846
 847         static bool s_hadGuiLock = TRUE;
 848         static wxMsgArray s_aSavedMessages;
 849
 850         // if a secondary thread owns is doing GUI calls, save all messages for
 851         // later processing - we can't process them right now because it will
 852         // lead to recursive library calls (and we're not reentrant)
 853         if ( !wxGuiOwnedByMainThread() )
 854         {
 855             s_hadGuiLock = FALSE;
 856
 857             // leave out WM_COMMAND messages: too dangerous, sometimes
 858             // the message will be processed twice
 859             if ( !wxIsWaitingForThread() ||
 860                     s_currentMsg.message != WM_COMMAND )
 861             {
 862                 s_aSavedMessages.Add(s_currentMsg);
 863             }
 864
 865             return TRUE;
 866         }
 867         else
 868         {
 869             // have we just regained the GUI lock? if so, post all of the saved
 870             // messages
 871             //
 872             // FIXME of course, it's not _exactly_ the same as processing the
 873             //       messages normally - expect some things to break...
 874             if ( !s_hadGuiLock )
 875             {
 876                 s_hadGuiLock = TRUE;
 877
 878                 size_t count = s_aSavedMessages.Count();
 879                 for ( size_t n = 0; n < count; n++ )
 880                 {
 881                     MSG& msg = s_aSavedMessages[n];
 882
 883                     if ( !ProcessMessage((WXMSG *)&msg) )
 884                     {
 885                         ::TranslateMessage(&msg);
 886                         ::DispatchMessage(&msg);
 887                     }
 888                 }
 889
 890                 s_aSavedMessages.Empty();
 891             }
 892         }
 893 #endif // wxUSE_THREADS
 894
 895         // Process the message
 896         if ( !ProcessMessage((WXMSG *)&s_currentMsg) )
 897         {
 898             ::TranslateMessage(&s_currentMsg);
 899             ::DispatchMessage(&s_currentMsg);
 900         }
 901     }
 902
 903     return TRUE;
 904 }
 905
 906 /*
 907  * Keep trying to process messages until WM_QUIT
 908  * received.
 909  *
 910  * If there are messages to be processed, they will all be
 911  * processed and OnIdle will not be called.
 912  * When there are no more messages, OnIdle is called.
 913  * If OnIdle requests more time,
 914  * it will be repeatedly called so long as there are no pending messages.
 915  * A 'feature' of this is that once OnIdle has decided that no more processing
 916  * is required, then it won't get processing time until further messages
 917  * are processed (it'll sit in DoMessage).
 918  */
 919
 920 int wxApp::MainLoop()
 921 {
 922     m_keepGoing = TRUE;
 923
 924     while ( m_keepGoing )
 925     {
 926 #if wxUSE_THREADS
 927         wxMutexGuiLeaveOrEnter();
 928 #endif // wxUSE_THREADS
 929
 930         while ( !::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
 931                 ProcessIdle() )
 932         {
 933         }
 934
 935
 936         DoMessage();
 937     }
 938
 939     return s_currentMsg.wParam;
 940 }
 941
 942 // Returns TRUE if more time is needed.
 943 bool wxApp::ProcessIdle()
 944 {
 945     wxIdleEvent event;
 946     event.SetEventObject(this);
 947     ProcessEvent(event);
 948
 949     return event.MoreRequested();
 950 }
 951
 952 void wxApp::ExitMainLoop()
 953 {
 954     m_keepGoing = FALSE;
 955 }
 956
 957 bool wxApp::Pending()
 958 {
 959     return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0);
 960 }
 961
 962 void wxApp::Dispatch()
 963 {
 964     DoMessage();
 965 }
 966
 967 /*
 968  * Give all windows a chance to preprocess
 969  * the message. Some may have accelerator tables, or have
 970  * MDI complications.
 971  */
 972
 973 bool wxApp::ProcessMessage(WXMSG *wxmsg)
 974 {
 975     MSG *msg = (MSG *)wxmsg;
 976     HWND hWnd = msg->hwnd;
 977     wxWindow *wndThis = wxFindWinFromHandle((WXHWND)hWnd), *wnd;
 978
 979     // for some composite controls (like a combobox), wndThis might be NULL
 980     // because the subcontrol is not a wxWindow, but only the control itself
 981     // is - try to catch this case
 982     while ( hWnd && !wndThis )
 983     {
 984         hWnd = ::GetParent(hWnd);
 985         wndThis = wxFindWinFromHandle((WXHWND)hWnd);
 986     }
 987
 988     // Try translations first; find the youngest window with
 989     // a translation table.
 990     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 991     {
 992         if ( wnd->MSWTranslateMessage(wxmsg) )
 993             return TRUE;
 994     }
 995
 996     // Anyone for a non-translation message? Try youngest descendants first.
 997     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 998     {
 999         if ( wnd->MSWProcessMessage(wxmsg) )
1000             return TRUE;
1001     }
1002
1003     return FALSE;
1004 }
1005
1006 void wxApp::OnIdle(wxIdleEvent& event)
1007 {
1008     static bool s_inOnIdle = FALSE;
1009
1010     // Avoid recursion (via ProcessEvent default case)
1011     if ( s_inOnIdle )
1012         return;
1013
1014     s_inOnIdle = TRUE;
1015
1016     // 'Garbage' collection of windows deleted with Close().
1017     DeletePendingObjects();
1018
1019 #if wxUSE_LOG
1020     // flush the logged messages if any
1021     wxLog *pLog = wxLog::GetActiveTarget();
1022     if ( pLog != NULL && pLog->HasPendingMessages() )
1023         pLog->Flush();
1024 #endif // wxUSE_LOG
1025
1026     // Send OnIdle events to all windows
1027     if ( SendIdleEvents() )
1028     {
1029         // SendIdleEvents() returns TRUE if at least one window requested more
1030         // idle events
1031         event.RequestMore(TRUE);
1032     }
1033
1034     // If they are pending events, we must process them: pending events are
1035     // either events to the threads other than main or events posted with
1036     // wxPostEvent() functions
1037     ProcessPendingEvents();
1038
1039     s_inOnIdle = FALSE;
1040 }
1041
1042 // Send idle event to all top-level windows
1043 bool wxApp::SendIdleEvents()
1044 {
1045     bool needMore = FALSE;
1046
1047     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1048     while (node)
1049     {
1050         wxWindow* win = node->GetData();
1051         if (SendIdleEvents(win))
1052             needMore = TRUE;
1053         node = node->GetNext();
1054     }
1055
1056     return needMore;
1057 }
1058
1059 // Send idle event to window and all subwindows
1060 bool wxApp::SendIdleEvents(wxWindow* win)
1061 {
1062     bool needMore = FALSE;
1063
1064     wxIdleEvent event;
1065     event.SetEventObject(win);
1066     win->GetEventHandler()->ProcessEvent(event);
1067
1068     if (event.MoreRequested())
1069         needMore = TRUE;
1070
1071     wxNode* node = win->GetChildren().First();
1072     while (node)
1073     {
1074         wxWindow* win = (wxWindow*) node->Data();
1075         if (SendIdleEvents(win))
1076             needMore = TRUE;
1077
1078         node = node->Next();
1079     }
1080     return needMore;
1081 }
1082
1083 void wxApp::DeletePendingObjects()
1084 {
1085     wxNode *node = wxPendingDelete.First();
1086     while (node)
1087     {
1088         wxObject *obj = (wxObject *)node->Data();
1089
1090         delete obj;
1091
1092         if (wxPendingDelete.Member(obj))
1093             delete node;
1094
1095         // Deleting one object may have deleted other pending
1096         // objects, so start from beginning of list again.
1097         node = wxPendingDelete.First();
1098     }
1099 }
1100
1101 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1102 {
1103     if (GetTopWindow())
1104         GetTopWindow()->Close(TRUE);
1105 }
1106
1107 // Default behaviour: close the application with prompts. The
1108 // user can veto the close, and therefore the end session.
1109 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1110 {
1111     if (GetTopWindow())
1112     {
1113         if (!GetTopWindow()->Close(!event.CanVeto()))
1114             event.Veto(TRUE);
1115     }
1116 }
1117
1118 #if wxUSE_RICHEDIT
1119
1120 /* static */
1121 bool wxApp::InitRichEdit(int version)
1122 {
1123     wxCHECK_MSG( version >= 1 && version <= 3, FALSE,
1124                  _T("incorrect richedit control version requested") );
1125
1126     if ( version <= gs_verRichEdit )
1127     {
1128         // we've already got this or better
1129         return TRUE;
1130     }
1131
1132     if ( gs_hRichEdit )
1133     {
1134         ::FreeLibrary(gs_hRichEdit);
1135     }
1136
1137     // always try load riched20.dll first - like this we won't have to reload
1138     // it later if we're first asked for RE 1 and then for RE 2 or 3
1139     wxString dllname = _T("riched20.dll");
1140     gs_hRichEdit = ::LoadLibrary(dllname);
1141     if ( !gs_hRichEdit && (version == 1) )
1142     {
1143         // fall back to RE 1
1144         dllname = _T("riched32.dll");
1145         gs_hRichEdit = ::LoadLibrary(dllname);
1146     }
1147
1148     if ( !gs_hRichEdit )
1149     {
1150         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
1151
1152         gs_verRichEdit = -1;
1153
1154         return FALSE;
1155     }
1156
1157     gs_verRichEdit = version;
1158
1159     return TRUE;
1160 }
1161
1162 #endif // wxUSE_RICHEDIT
1163
1164 /* static */
1165 int wxApp::GetComCtl32Version()
1166 {
1167     // cache the result
1168     static int s_verComCtl32 = -1;
1169
1170     wxCRIT_SECT_DECLARE(csComCtl32);
1171     wxCRIT_SECT_LOCKER(lock, csComCtl32);
1172
1173     if ( s_verComCtl32 == -1 )
1174     {
1175         // initally assume no comctl32.dll at all
1176         s_verComCtl32 = 0;
1177
1178         // do we have it?
1179         HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
1180
1181         // if so, then we can check for the version
1182         if ( hModuleComCtl32 )
1183         {
1184             // try to use DllGetVersion() if available in _headers_
1185             #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
1186                 DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
1187                     ::GetProcAddress(hModuleComCtl32, _T("DllGetVersion"));
1188                 if ( pfnDllGetVersion )
1189                 {
1190                     DLLVERSIONINFO dvi;
1191                     dvi.cbSize = sizeof(dvi);
1192
1193                     HRESULT hr = (*pfnDllGetVersion)(&dvi);
1194                     if ( FAILED(hr) )
1195                     {
1196                         wxLogApiError(_T("DllGetVersion"), hr);
1197                     }
1198                     else
1199                     {
1200                         // this is incompatible with _WIN32_IE values, but
1201                         // compatible with the other values returned by
1202                         // GetComCtl32Version()
1203                         s_verComCtl32 = 100*dvi.dwMajorVersion +
1204                                             dvi.dwMinorVersion;
1205                     }
1206                 }
1207             #endif
1208                 // DllGetVersion() unavailable either during compile or
1209                 // run-time, try to guess the version otherwise
1210                 if ( !s_verComCtl32 )
1211                 {
1212                     // InitCommonControlsEx is unique to 4.70 and later
1213                     FARPROC theProc = ::GetProcAddress
1214                                         (
1215                                          hModuleComCtl32,
1216                                          _T("InitCommonControlsEx")
1217                                         );
1218
1219                     if ( !theProc )
1220                     {
1221                         // not found, must be 4.00
1222                         s_verComCtl32 = 400;
1223                     }
1224                     else
1225                     {
1226                         // many symbols appeared in comctl32 4.71, could use
1227                         // any of them except may be DllInstall
1228                         theProc = ::GetProcAddress
1229                                     (
1230                                      hModuleComCtl32,
1231                                      _T("InitializeFlatSB")
1232                                     );
1233                         if ( !theProc )
1234                         {
1235                             // not found, must be 4.70
1236                             s_verComCtl32 = 470;
1237                         }
1238                         else
1239                         {
1240                             // found, must be 4.71
1241                             s_verComCtl32 = 471;
1242                         }
1243                     }
1244                 }
1245         }
1246     }
1247
1248     return s_verComCtl32;
1249 }
1250
1251 void wxExit()
1252 {
1253     wxLogError(_("Fatal error: exiting"));
1254
1255     wxApp::CleanUp();
1256 }
1257
1258 // Yield to incoming messages
1259 bool wxYield()
1260 {
1261     // we don't want to process WM_QUIT from here - it should be processed in
1262     // the main event loop in order to stop it
1263
1264     MSG msg;
1265     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1266             msg.message != WM_QUIT )
1267     {
1268         if ( !wxTheApp->DoMessage() )
1269             break;
1270     }
1271
1272     // If they are pending events, we must process them.
1273     wxTheApp->ProcessPendingEvents();
1274
1275     return TRUE;
1276 }
1277
1278 //-----------------------------------------------------------------------------
1279 // wxWakeUpIdle
1280 //-----------------------------------------------------------------------------
1281
1282 void wxWakeUpIdle()
1283 {
1284     // Send the top window a dummy message so idle handler processing will
1285     // start up again.  Doing it this way ensures that the idle handler
1286     // wakes up in the right thread (see also wxWakeUpMainThread() which does
1287     // the same for the main app thread only)
1288     wxWindow *topWindow = wxTheApp->GetTopWindow();
1289     if ( topWindow )
1290     {
1291         if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
1292         {
1293             // should never happen
1294             wxLogLastError("PostMessage(WM_NULL)");
1295         }
1296     }
1297 }
1298
1299 //-----------------------------------------------------------------------------
1300
1301 wxIcon
1302 wxApp::GetStdIcon(int which) const
1303 {
1304     switch(which)
1305     {
1306         case wxICON_INFORMATION:
1307             return wxIcon("wxICON_INFO");
1308
1309         case wxICON_QUESTION:
1310             return wxIcon("wxICON_QUESTION");
1311
1312         case wxICON_EXCLAMATION:
1313             return wxIcon("wxICON_WARNING");
1314
1315         default:
1316             wxFAIL_MSG(wxT("requested non existent standard icon"));
1317             // still fall through
1318
1319         case wxICON_HAND:
1320             return wxIcon("wxICON_ERROR");
1321     }
1322 }
1323
1324 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1325 // if in a separate file. So include it here to ensure it's linked.
1326 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__))
1327 #include "main.cpp"
1328 #endif