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 #ifdef __GNUG__
  13 #pragma implementation "app.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #if defined(__BORLANDC__)
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24   #include "wx/frame.h"
  25   #include "wx/app.h"
  26   #include "wx/utils.h"
  27   #include "wx/gdicmn.h"
  28   #include "wx/pen.h"
  29   #include "wx/brush.h"
  30   #include "wx/cursor.h"
  31   #include "wx/icon.h"
  32   #include "wx/palette.h"
  33   #include "wx/dc.h"
  34   #include "wx/dialog.h"
  35   #include "wx/msgdlg.h"
  36   #include "wx/intl.h"
  37 #endif
  38
  39 #include "wx/msw/private.h"
  40 #include "wx/log.h"
  41 #include "wx/module.h"
  42
  43 #if wxUSE_THREADS
  44     #include "wx/thread.h"
  45
  46     // define the array of MSG strutures
  47     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  48
  49     #include "wx/arrimpl.cpp"
  50
  51     WX_DEFINE_OBJARRAY(wxMsgArray);
  52 #endif // wxUSE_THREADS
  53
  54 #if wxUSE_WX_RESOURCES
  55   #include "wx/resource.h"
  56 #endif
  57
  58 // To UG: there's no point in putting this #if here
  59 // if you don't do the same for the Ole calls further down.
  60 // Also, OLE is used not just for drag and drop (it's used by automatn.cpp).
  61 // #if wxUSE_DRAG_AND_DROP
  62 #if !defined(__GNUWIN32__) && !defined(__SC__)
  63 #include <ole2.h>
  64 #endif
  65 // #endif
  66
  67 #include <string.h>
  68 #include <ctype.h>
  69
  70 #if defined(__WIN95__) && !defined(__GNUWIN32__)
  71   #include <commctrl.h>
  72 #endif
  73
  74 // use debug CRT functions for memory leak detections in VC++ if we're not
  75 // using wxWindows own methods
  76 #if defined(__WXDEBUG__) && defined(_MSC_VER) && !wxUSE_GLOBAL_MEMORY_OPERATORS && !defined(__NO_VC_CRTDBG__)
  77     #define wxUSE_VC_CRTDBG
  78 #else
  79     #undef wxUSE_VC_CRTDBG
  80 #endif
  81
  82 #ifdef wxUSE_VC_CRTDBG
  83   // VC++ uses this macro as debug/release mode indicator
  84   #ifndef _DEBUG
  85     #define _DEBUG
  86   #endif
  87
  88   /* Need to undef new if including crtdbg.h */
  89   #ifdef new
  90     #undef new
  91   #endif
  92
  93   #include <crtdbg.h>
  94
  95   #if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
  96     #define new new(__FILE__,__LINE__)
  97   #endif
  98 #endif // wxUSE_VC_CRTDBG
  99
 100 extern char *wxBuffer;
 101 extern char *wxOsVersion;
 102 extern wxList *wxWinHandleList;
 103 extern wxList WXDLLEXPORT wxPendingDelete;
 104 extern void wxSetKeyboardHook(bool doIt);
 105 extern wxCursor *g_globalCursor;
 106
 107 HINSTANCE wxhInstance = 0;
 108 static MSG s_currentMsg;
 109 wxApp *wxTheApp = NULL;
 110
 111 // @@ why not const? and not static?
 112 char wxFrameClassName[]         = "wxFrameClass";
 113 char wxMDIFrameClassName[]      = "wxMDIFrameClass";
 114 char wxMDIChildFrameClassName[] = "wxMDIChildFrameClass";
 115 char wxPanelClassName[]         = "wxPanelClass";
 116 char wxCanvasClassName[]        = "wxCanvasClass";
 117
 118 HICON wxSTD_FRAME_ICON = NULL;
 119 HICON wxSTD_MDICHILDFRAME_ICON = NULL;
 120 HICON wxSTD_MDIPARENTFRAME_ICON = NULL;
 121
 122 HICON wxDEFAULT_FRAME_ICON = NULL;
 123 HICON wxDEFAULT_MDICHILDFRAME_ICON = NULL;
 124 HICON wxDEFAULT_MDIPARENTFRAME_ICON = NULL;
 125
 126 HBRUSH wxDisableButtonBrush = 0;
 127
 128 LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 129
 130 #if !USE_SHARED_LIBRARY
 131   IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 132
 133   BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 134       EVT_IDLE(wxApp::OnIdle)
 135       EVT_END_SESSION(wxApp::OnEndSession)
 136       EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 137   END_EVENT_TABLE()
 138 #endif
 139
 140 long wxApp::sm_lastMessageTime = 0;
 141
 142 #ifdef __WIN95__
 143   static HINSTANCE gs_hRichEdit = NULL;
 144 #endif
 145
 146 //// Initialize
 147
 148 bool wxApp::Initialize()
 149 {
 150     // Some people may wish to use this, but
 151     // probably it shouldn't be here by default.
 152 #ifdef __WXDEBUG__
 153 //    wxRedirectIOToConsole();
 154 #endif
 155
 156     wxBuffer = new char[1500];
 157
 158 #ifdef wxUSE_VC_CRTDBG
 159     // do check for memory leaks on program exit
 160     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 161     //  deallocated memory which may be used to simulate low-memory condition)
 162     _CrtSetDbgFlag(_CrtSetDbgFlag(_CRTDBG_REPORT_FLAG) | _CRTDBG_LEAK_CHECK_DF);
 163 #endif // debug build under MS VC++
 164
 165     wxClassInfo::InitializeClasses();
 166
 167 #if wxUSE_RESOURCES
 168     wxGetResource("wxWindows", "OsVersion", &wxOsVersion);
 169 #endif
 170
 171     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 172     wxTheColourDatabase->Initialize();
 173
 174     wxInitializeStockLists();
 175     wxInitializeStockObjects();
 176
 177 #if wxUSE_WX_RESOURCES
 178     wxInitializeResourceSystem();
 179 #endif
 180
 181     wxBitmap::InitStandardHandlers();
 182
 183 #if defined(__WIN95__)
 184     InitCommonControls();
 185     gs_hRichEdit = LoadLibrary("RICHED32.DLL");
 186
 187     if (gs_hRichEdit == NULL)
 188     {
 189       wxMessageBox("Could not initialise Rich Edit DLL");
 190     }
 191 #endif
 192
 193     int iMsg = 96;
 194
 195    // for OLE, enlarge message queue to be as large as possible
 196    while (!SetMessageQueue(iMsg) && (iMsg -= 8));
 197
 198 /*
 199     DWORD dwOleVer;
 200     dwOleVer = CoBuildVersion();
 201
 202     // check the OLE library version
 203     if (rmm != HIWORD(dwOleVer))
 204     {
 205         wxMessageBox("Incorrect version of OLE libraries.");
 206         return FALSE;
 207     }
 208 */
 209
 210 #if !defined(__GNUWIN32__) && !defined(__SC__)
 211     // we need to initialize OLE library
 212     if ( FAILED(::OleInitialize(NULL)) )
 213       wxFatalError(_("Cannot initialize OLE"));
 214 #endif
 215
 216 #if CTL3D
 217     if (!Ctl3dRegister(wxhInstance))
 218       wxFatalError("Cannot register CTL3D");
 219
 220     Ctl3dAutoSubclass(wxhInstance);
 221 #endif
 222
 223     g_globalCursor = new wxCursor;
 224
 225     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, "wxSTD_FRAME");
 226     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDIPARENTFRAME");
 227     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDICHILDFRAME");
 228
 229     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_FRAME");
 230     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDIPARENTFRAME");
 231     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDICHILDFRAME");
 232
 233     RegisterWindowClasses();
 234
 235     // Create the brush for disabling bitmap buttons
 236
 237     LOGBRUSH lb ;
 238     lb.lbStyle = BS_PATTERN;
 239     lb.lbHatch = (int)LoadBitmap( wxhInstance, "wxDISABLE_BUTTON_BITMAP" ) ;
 240     wxDisableButtonBrush = ::CreateBrushIndirect( & lb ) ;
 241     ::DeleteObject( (HGDIOBJ)lb.lbHatch ) ;
 242
 243 #if wxUSE_PENWINDOWS
 244     wxRegisterPenWin();
 245 #endif
 246
 247     wxWinHandleList = new wxList(wxKEY_INTEGER);
 248
 249     // This is to foil optimizations in Visual C++ that
 250     // throw out dummy.obj.
 251 #if defined(_MSC_VER) && !defined(WXMAKINGDLL)
 252     extern char wxDummyChar;
 253     if (wxDummyChar) wxDummyChar++;
 254 #endif
 255
 256     wxSetKeyboardHook(TRUE);
 257
 258     wxModule::RegisterModules();
 259     if (!wxModule::InitializeModules())
 260         return FALSE;
 261     return TRUE;
 262 }
 263
 264 //// RegisterWindowClasses
 265
 266 bool wxApp::RegisterWindowClasses()
 267 {
 268 ///////////////////////////////////////////////////////////////////////
 269 // Register the frame window class.
 270   WNDCLASS wndclass;   // Structure used to register Windows class.
 271
 272   wndclass.style         = CS_HREDRAW | CS_VREDRAW;
 273   wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 274   wndclass.cbClsExtra    = 0;
 275   wndclass.cbWndExtra    = sizeof( DWORD ); // was 4
 276   wndclass.hInstance     = wxhInstance;
 277   wndclass.hIcon         = NULL;        // wxSTD_FRAME_ICON;
 278   wndclass.hCursor       = LoadCursor( NULL, IDC_ARROW );
 279   wndclass.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 280 //  wndclass.hbrBackground = GetStockObject( WHITE_BRUSH );
 281   wndclass.lpszMenuName  = NULL;
 282 #ifdef _MULTIPLE_INSTANCES
 283   sprintf( wxFrameClassName,"wxFrameClass%d", wxhInstance );
 284 #endif
 285   wndclass.lpszClassName = wxFrameClassName;
 286
 287   if (!RegisterClass( &wndclass ))
 288   {
 289     // wxFatalError("Can't register Frame Window class");
 290   }
 291
 292 ///////////////////////////////////////////////////////////////////////
 293 // Register the MDI frame window class.
 294   WNDCLASS wndclass1;   // Structure used to register Windows class.
 295
 296   wndclass1.style         = CS_HREDRAW | CS_VREDRAW;
 297   wndclass1.lpfnWndProc   = (WNDPROC)wxWndProc;
 298   wndclass1.cbClsExtra    = 0;
 299   wndclass1.cbWndExtra    = sizeof( DWORD ); // was 4
 300   wndclass1.hInstance     = wxhInstance;
 301   wndclass1.hIcon         = NULL; // wxSTD_MDIPARENTFRAME_ICON;
 302   wndclass1.hCursor       = LoadCursor( NULL, IDC_ARROW );
 303 //  wndclass1.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 304   wndclass1.hbrBackground = NULL;
 305   wndclass1.lpszMenuName  = NULL;
 306
 307   wndclass1.lpszClassName = wxMDIFrameClassName;
 308   if (!RegisterClass( &wndclass1 ))
 309   {
 310 //    wxFatalError("Can't register MDI Frame window class");
 311 //  return FALSE;
 312   }
 313
 314 ///////////////////////////////////////////////////////////////////////
 315 // Register the MDI child frame window class.
 316   WNDCLASS wndclass4;   // Structure used to register Windows class.
 317
 318   wndclass4.style         = CS_HREDRAW | CS_VREDRAW;
 319   wndclass4.lpfnWndProc   = (WNDPROC)wxWndProc;
 320   wndclass4.cbClsExtra    = 0;
 321   wndclass4.cbWndExtra    = sizeof( DWORD ); // was 4
 322   wndclass4.hInstance     = wxhInstance;
 323   wndclass4.hIcon         = NULL;       // wxSTD_MDICHILDFRAME_ICON;
 324   wndclass4.hCursor       = LoadCursor( NULL, IDC_ARROW );
 325   // TODO: perhaps this should be NULL so that Windows doesn't
 326   // paint the background itself (would OnEraseBackground duplicate
 327   // this?)
 328   wndclass4.hbrBackground =  (HBRUSH)(COLOR_WINDOW+1) ;
 329 //  wndclass4.hbrBackground = NULL;
 330   wndclass4.lpszMenuName  = NULL;
 331   wndclass4.lpszClassName = wxMDIChildFrameClassName;
 332
 333   if (!RegisterClass( &wndclass4 ))
 334   {
 335 //   wxFatalError("Can't register MDI child frame window class");
 336 //   return FALSE;
 337   }
 338
 339 ///////////////////////////////////////////////////////////////////////
 340 // Register the panel window class.
 341   WNDCLASS wndclass2;   // Structure used to register Windows class.
 342   memset(&wndclass2, 0, sizeof(WNDCLASS));   // start with NULL defaults
 343   // Use CS_OWNDC to avoid messing about restoring the context
 344   // for every graphic operation.
 345   wndclass2.style         = CS_HREDRAW | CS_VREDRAW;
 346   wndclass2.lpfnWndProc   = (WNDPROC)wxWndProc;
 347   wndclass2.cbClsExtra    = 0;
 348   wndclass2.cbWndExtra    = sizeof( DWORD ); // was 4
 349   wndclass2.hInstance     = wxhInstance;
 350   wndclass2.hIcon         = NULL;
 351   wndclass2.hCursor       = NULL;
 352 //  wndclass2.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1) ;
 353   wndclass2.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 354   wndclass2.lpszMenuName  = NULL;
 355   wndclass2.lpszClassName = wxPanelClassName;
 356   if (!RegisterClass( &wndclass2 ))
 357   {
 358 //   wxFatalError("Can't register Panel Window class");
 359 //   return FALSE;
 360   }
 361
 362 ///////////////////////////////////////////////////////////////////////
 363 // Register the canvas and textsubwindow class name
 364   WNDCLASS wndclass3;   // Structure used to register Windows class.
 365   memset(&wndclass3, 0, sizeof(WNDCLASS));   // start with NULL defaults
 366   // Use CS_OWNDC to avoid messing about restoring the context
 367   // for every graphic operation.
 368 //  wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_OWNDC | CS_DBLCLKS ;
 369   // wxWin 2.0
 370   wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 371   wndclass3.lpfnWndProc   = (WNDPROC)wxWndProc;
 372   wndclass3.cbClsExtra    = 0;
 373   wndclass3.cbWndExtra    = sizeof( DWORD ); // was 4
 374   wndclass3.hInstance     = wxhInstance;
 375   wndclass3.hIcon         = NULL;
 376   wndclass3.hCursor       = NULL;
 377 //  wndclass3.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ;
 378   wndclass3.hbrBackground = NULL;
 379   wndclass3.lpszMenuName  = NULL;
 380   wndclass3.lpszClassName = wxCanvasClassName;
 381   if (!RegisterClass( &wndclass3))
 382   {
 383 //   wxFatalError("Can't register Canvas class");
 384 //   return FALSE;
 385   }
 386
 387   return TRUE;
 388 }
 389
 390 //// Convert Windows to argc, argv style
 391
 392 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 393 {
 394     wxStringList args;
 395
 396     wxString cmdLine(lpCmdLine);
 397     int count = 0;
 398
 399     // Get application name
 400     char name[260]; // 260 is MAX_PATH value from windef.h
 401     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 402
 403     // GNUWIN32 already fills in the first arg with the application name.
 404 #if !defined(__GNUWIN32__)
 405     args.Add(name);
 406     count ++;
 407 #endif
 408
 409     strcpy(name, wxFileNameFromPath(name));
 410     wxStripExtension(name);
 411     wxTheApp->SetAppName(name);
 412
 413     // Break up string
 414     // Treat strings enclosed in double-quotes as single arguments
 415     int i = 0;
 416     int len = cmdLine.Length();
 417     while (i < len)
 418     {
 419         // Skip whitespace
 420         while ((i < len) && isspace(cmdLine.GetChar(i)))
 421             i ++;
 422
 423         if (i < len)
 424         {
 425             if (cmdLine.GetChar(i) == '"') // We found the start of a string
 426             {
 427                 i ++;
 428                 int first = i;
 429                 while ((i < len) && (cmdLine.GetChar(i) != '"'))
 430                     i ++;
 431
 432                 wxString arg(cmdLine.Mid(first, (i - first)));
 433
 434                 args.Add(arg);
 435                 count ++;
 436
 437                 if (i < len)
 438                     i ++; // Skip past 2nd quote
 439             }
 440             else // Unquoted argument
 441             {
 442                 int first = i;
 443                 while ((i < len) && !isspace(cmdLine.GetChar(i)))
 444                     i ++;
 445
 446                 wxString arg(cmdLine.Mid(first, (i - first)));
 447
 448                 args.Add(arg);
 449                 count ++;
 450             }
 451         }
 452     }
 453
 454     wxTheApp->argv = new char*[count + 1];
 455     for (i = 0; i < count; i++)
 456     {
 457         wxString arg(args[i]);
 458         wxTheApp->argv[i] = copystring((const char*)arg);
 459     }
 460     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 461     wxTheApp->argc = count;
 462 }
 463
 464 //// Cleans up any wxWindows internal structures left lying around
 465
 466 void wxApp::CleanUp()
 467 {
 468   //// COMMON CLEANUP
 469   wxModule::CleanUpModules();
 470
 471 #if wxUSE_WX_RESOURCES
 472   wxCleanUpResourceSystem();
 473
 474 //  wxDefaultResourceTable->ClearTable();
 475 #endif
 476
 477   // Indicate that the cursor can be freed,
 478   // so that cursor won't be deleted by deleting
 479   // the bitmap list before g_globalCursor goes out
 480   // of scope (double deletion of the cursor).
 481   wxSetCursor(wxNullCursor);
 482   delete g_globalCursor;
 483
 484   wxDeleteStockObjects() ;
 485
 486   // Destroy all GDI lists, etc.
 487   wxDeleteStockLists();
 488
 489   delete wxTheColourDatabase;
 490   wxTheColourDatabase = NULL;
 491
 492   wxBitmap::CleanUpHandlers();
 493
 494   delete[] wxBuffer;
 495   wxBuffer = NULL;
 496
 497   //// WINDOWS-SPECIFIC CLEANUP
 498
 499   wxSetKeyboardHook(FALSE);
 500
 501 #ifdef __WIN95__
 502   if (gs_hRichEdit != NULL)
 503     FreeLibrary(gs_hRichEdit);
 504 #endif
 505
 506 #if wxUSE_PENWINDOWS
 507   wxCleanUpPenWin();
 508 #endif
 509
 510   if (wxSTD_FRAME_ICON)
 511     DestroyIcon(wxSTD_FRAME_ICON);
 512   if (wxSTD_MDICHILDFRAME_ICON)
 513     DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 514   if (wxSTD_MDIPARENTFRAME_ICON)
 515     DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 516
 517   if (wxDEFAULT_FRAME_ICON)
 518     DestroyIcon(wxDEFAULT_FRAME_ICON);
 519   if (wxDEFAULT_MDICHILDFRAME_ICON)
 520     DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 521   if (wxDEFAULT_MDIPARENTFRAME_ICON)
 522     DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 523
 524   if ( wxDisableButtonBrush )
 525     ::DeleteObject( wxDisableButtonBrush ) ;
 526
 527 #if !defined(__GNUWIN32__) && !defined(__SC__)
 528   ::OleUninitialize();
 529 #endif
 530
 531 #if CTL3D
 532   Ctl3dUnregister(wxhInstance);
 533 #endif
 534
 535   if (wxWinHandleList)
 536     delete wxWinHandleList ;
 537
 538   wxClassInfo::CleanUpClasses();
 539
 540   delete wxTheApp;
 541   wxTheApp = NULL;
 542
 543 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 544   // At this point we want to check if there are any memory
 545   // blocks that aren't part of the wxDebugContext itself,
 546   // as a special case. Then when dumping we need to ignore
 547   // wxDebugContext, too.
 548   if (wxDebugContext::CountObjectsLeft() > 0)
 549   {
 550       wxLogDebug("There were memory leaks.");
 551       wxDebugContext::Dump();
 552       wxDebugContext::PrintStatistics();
 553   }
 554 //  wxDebugContext::SetStream(NULL, NULL);
 555 #endif
 556
 557   // do it as the very last thing because everything else can log messages
 558   wxLog::DontCreateOnDemand();
 559   delete wxLog::SetActiveTarget(NULL);
 560 }
 561
 562 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 563
 564 // temporarily disable this warning
 565 #ifdef _MSC_VER
 566     #pragma warning(disable: 4715) // not all control paths return a value
 567 #endif // Visual C++
 568
 569 //// Main wxWindows entry point
 570 int wxEntry(WXHINSTANCE hInstance,
 571             WXHINSTANCE WXUNUSED(hPrevInstance),
 572             char *lpCmdLine,
 573             int nCmdShow,
 574             bool enterLoop)
 575 {
 576   // take everything into a try-except block in release build
 577   // FIXME other compilers must support Win32 SEH (structured exception
 578   //       handling) too, just find the appropriate keyword in their docs!
 579   //       Please note that it's _not_ the same as C++ exceptions!
 580 #if !defined(__WXDEBUG__) && defined(_MSC_VER)
 581     #define CATCH_PROGRAM_EXCEPTIONS
 582
 583   __try {
 584 #else
 585     #undef  CATCH_PROGRAM_EXCEPTIONS
 586 #endif
 587
 588   wxhInstance = (HINSTANCE) hInstance;
 589
 590   if (!wxApp::Initialize())
 591     return 0;
 592
 593   // create the application object or ensure that one already exists
 594   if (!wxTheApp)
 595   {
 596     // The app may have declared a global application object, but we recommend
 597     // the IMPLEMENT_APP macro is used instead, which sets an initializer
 598     // function for delayed, dynamic app object construction.
 599     wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 600                  "No initializer - use IMPLEMENT_APP macro." );
 601
 602     wxTheApp = (*wxApp::GetInitializerFunction()) ();
 603   }
 604
 605   wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 606
 607   // save the WinMain() parameters
 608   wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 609   wxTheApp->m_nCmdShow = nCmdShow;
 610
 611   // GUI-specific initialisation. In fact on Windows we don't have any,
 612   // but this call is provided for compatibility across platforms.
 613   wxTheApp->OnInitGui() ;
 614
 615   int retValue = 0;
 616
 617   if ( wxTheApp->OnInit() )
 618   {
 619       if ( enterLoop )
 620       {
 621           retValue = wxTheApp->OnRun();
 622       }
 623   }
 624   //else: app initialization failed, so we skipped OnRun()
 625
 626   wxWindow *topWindow = wxTheApp->GetTopWindow();
 627   if ( topWindow )
 628   {
 629       // Forcibly delete the window.
 630       if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 631            topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 632       {
 633           topWindow->Close(TRUE);
 634           wxTheApp->DeletePendingObjects();
 635       }
 636       else
 637       {
 638           delete topWindow;
 639           wxTheApp->SetTopWindow(NULL);
 640       }
 641   }
 642
 643   wxTheApp->OnExit();
 644
 645   // flush the logged messages if any
 646   wxLog *pLog = wxLog::GetActiveTarget();
 647   if ( pLog != NULL && pLog->HasPendingMessages() )
 648     pLog->Flush();
 649
 650
 651   wxApp::CleanUp();
 652
 653   return retValue;
 654
 655 #ifdef CATCH_PROGRAM_EXCEPTIONS
 656   }
 657   __except ( EXCEPTION_EXECUTE_HANDLER ) {
 658     /*
 659     if ( wxTheApp )
 660       wxTheApp->OnFatalException();
 661     */
 662
 663     ::ExitProcess(3); // the same exit code as abort()
 664
 665     // NOTREACHED
 666   }
 667 #endif // CATCH_PROGRAM_EXCEPTIONS
 668 }
 669
 670 // restore warning state
 671 #ifdef _MSC_VER
 672     #pragma warning(default: 4715) // not all control paths return a value
 673 #endif // Visual C++
 674
 675 #else /*  _WINDLL  */
 676
 677 //// Entry point for DLLs
 678
 679 int wxEntry(WXHINSTANCE hInstance)
 680 {
 681   wxhInstance = (HINSTANCE) hInstance;
 682   wxApp::Initialize();
 683
 684   // The app may have declared a global application object, but we recommend
 685   // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 686   // for delayed, dynamic app object construction.
 687
 688   if (!wxTheApp)
 689   {
 690     if (!wxApp::GetInitializerFunction())
 691     {
 692       MessageBox(NULL, "No initializer - use IMPLEMENT_APP macro.", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 693     return 0;
 694     }
 695
 696     wxTheApp = (* wxApp::GetInitializerFunction()) ();
 697   }
 698
 699   if (!wxTheApp) {
 700     MessageBox(NULL, "You have to define an instance of wxApp!", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 701     return 0;
 702   }
 703
 704   wxTheApp->argc = 0;
 705   wxTheApp->argv = NULL;
 706
 707   wxTheApp->OnInitGui();
 708
 709   wxTheApp->OnInit();
 710
 711   if (wxTheApp->GetTopWindow() && wxTheApp->GetTopWindow()->GetHWND()) {
 712     wxTheApp->GetTopWindow()->Show(TRUE);
 713   }
 714
 715   return 1;
 716 }
 717 #endif // _WINDLL
 718
 719 //// Static member initialization
 720
 721 wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
 722
 723 wxApp::wxApp()
 724 {
 725   m_topWindow = NULL;
 726   wxTheApp = this;
 727   m_className = "";
 728   m_wantDebugOutput = TRUE ;
 729   m_appName = "";
 730   argc = 0;
 731   argv = NULL;
 732 #ifdef __WXMSW__
 733   m_printMode = wxPRINT_WINDOWS;
 734 #else
 735   m_printMode = wxPRINT_POSTSCRIPT;
 736 #endif
 737   m_exitOnFrameDelete = TRUE;
 738   m_auto3D = TRUE;
 739 }
 740
 741 wxApp::~wxApp()
 742 {
 743   // Delete command-line args
 744   int i;
 745   for (i = 0; i < argc; i++)
 746   {
 747     delete[] argv[i];
 748   }
 749   delete[] argv;
 750 }
 751
 752 bool wxApp::Initialized()
 753 {
 754 #ifndef _WINDLL
 755   if (GetTopWindow())
 756     return TRUE;
 757   else
 758     return FALSE;
 759 #endif
 760 #ifdef _WINDLL // Assume initialized if DLL (no way of telling)
 761   return TRUE;
 762 #endif
 763 }
 764
 765 /*
 766  * Get and process a message, returning FALSE if WM_QUIT
 767  * received (and also set the flag telling the app to exit the main loop)
 768  *
 769  */
 770 bool wxApp::DoMessage()
 771 {
 772     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 773     if ( rc == 0 )
 774     {
 775         // got WM_QUIT
 776         m_keepGoing = FALSE;
 777
 778         return FALSE;
 779     }
 780     else if ( rc == -1 )
 781     {
 782         // should never happen, but let's test for it nevertheless
 783         wxLogLastError("GetMessage");
 784     }
 785     else
 786     {
 787 #if wxUSE_THREADS
 788         wxASSERT_MSG( wxThread::IsMain(),
 789                       "only the main thread can process Windows messages" );
 790
 791         static bool s_hadGuiLock = TRUE;
 792         static wxMsgArray s_aSavedMessages;
 793
 794         // if a secondary thread owns is doing GUI calls, save all messages for
 795         // later processing - we can't process them right now because it will
 796         // lead to recursive library calls (and we're not reentrant)
 797         if ( !wxGuiOwnedByMainThread() )
 798         {
 799             s_hadGuiLock = FALSE;
 800
 801             // leave out WM_COMMAND messages: too dangerous, sometimes
 802             // the message will be processed twice
 803             if ( !wxIsWaitingForThread() ||
 804                  s_currentMsg.message != WM_COMMAND )
 805             {
 806                 s_aSavedMessages.Add(s_currentMsg);
 807             }
 808
 809             return TRUE;
 810         }
 811         else
 812         {
 813             // have we just regained the GUI lock? if so, post all of the saved
 814             // messages
 815             //
 816             // FIXME of course, it's not _exactly_ the same as processing the
 817             //       messages normally - expect some things to break...
 818             if ( !s_hadGuiLock )
 819             {
 820                 s_hadGuiLock = TRUE;
 821
 822                 size_t count = s_aSavedMessages.Count();
 823                 for ( size_t n = 0; n < count; n++ )
 824                 {
 825                     MSG& msg = s_aSavedMessages[n];
 826
 827                     if ( !ProcessMessage((WXMSG *)&msg) )
 828                     {
 829                         ::TranslateMessage(&msg);
 830                         ::DispatchMessage(&msg);
 831                     }
 832                 }
 833
 834                 s_aSavedMessages.Empty();
 835             }
 836         }
 837 #endif // wxUSE_THREADS
 838
 839         // Process the message
 840         if ( !ProcessMessage((WXMSG *)&s_currentMsg) )
 841         {
 842             ::TranslateMessage(&s_currentMsg);
 843             wxApp::sm_lastMessageTime = s_currentMsg.time; /* MATTHEW: timeStamp impl. */
 844             ::DispatchMessage(&s_currentMsg);
 845         }
 846     }
 847
 848     return TRUE;
 849 }
 850
 851 /*
 852  * Keep trying to process messages until WM_QUIT
 853  * received.
 854  *
 855  * If there are messages to be processed, they will all be
 856  * processed and OnIdle will not be called.
 857  * When there are no more messages, OnIdle is called.
 858  * If OnIdle requests more time,
 859  * it will be repeatedly called so long as there are no pending messages.
 860  * A 'feature' of this is that once OnIdle has decided that no more processing
 861  * is required, then it won't get processing time until further messages
 862  * are processed (it'll sit in DoMessage).
 863  */
 864
 865 int wxApp::MainLoop()
 866 {
 867   m_keepGoing = TRUE;
 868
 869   while ( m_keepGoing )
 870   {
 871     #if wxUSE_THREADS
 872         wxMutexGuiLeaveOrEnter();
 873     #endif // wxUSE_THREADS
 874
 875     while ( !::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
 876             ProcessIdle() )
 877     {
 878     }
 879
 880     DoMessage();
 881   }
 882
 883   return s_currentMsg.wParam;
 884 }
 885
 886 // Returns TRUE if more time is needed.
 887 bool wxApp::ProcessIdle()
 888 {
 889     wxIdleEvent event;
 890     event.SetEventObject(this);
 891     ProcessEvent(event);
 892
 893     return event.MoreRequested();
 894 }
 895
 896 void wxApp::ExitMainLoop()
 897 {
 898   m_keepGoing = FALSE;
 899 }
 900
 901 bool wxApp::Pending()
 902 {
 903   return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0) ;
 904 }
 905
 906 void wxApp::Dispatch()
 907 {
 908     DoMessage();
 909 }
 910
 911 /*
 912  * Give all windows a chance to preprocess
 913  * the message. Some may have accelerator tables, or have
 914  * MDI complications.
 915  */
 916 bool wxApp::ProcessMessage(WXMSG *Msg)
 917 {
 918   MSG *msg = (MSG *)Msg;
 919
 920   HWND hWnd;
 921
 922   // Try translations first; find the youngest window with
 923   // a translation table.
 924   for (hWnd = msg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd))
 925   {
 926     wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
 927     if (wnd)
 928     {
 929        if (wnd->MSWTranslateMessage(Msg))
 930          return TRUE;
 931     }
 932   }
 933
 934   // Anyone for a non-translation message? Try youngest descendants first.
 935   for (hWnd = msg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd))
 936   {
 937     wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
 938     if (wnd)
 939     {
 940        if (wnd->MSWProcessMessage(Msg))
 941          return TRUE;
 942     }
 943   }
 944   return FALSE;
 945 }
 946
 947 void wxApp::OnIdle(wxIdleEvent& event)
 948 {
 949     static bool s_inOnIdle = FALSE;
 950
 951     // Avoid recursion (via ProcessEvent default case)
 952     if ( s_inOnIdle )
 953         return;
 954
 955     s_inOnIdle = TRUE;
 956
 957     // 'Garbage' collection of windows deleted with Close().
 958     DeletePendingObjects();
 959
 960     // flush the logged messages if any
 961     wxLog *pLog = wxLog::GetActiveTarget();
 962     if ( pLog != NULL && pLog->HasPendingMessages() )
 963         pLog->Flush();
 964
 965     // Send OnIdle events to all windows
 966     if ( SendIdleEvents() )
 967     {
 968         // SendIdleEvents() returns TRUE if at least one window requested more
 969         // idle events
 970         event.RequestMore(TRUE);
 971     }
 972
 973     s_inOnIdle = FALSE;
 974 }
 975
 976 // Send idle event to all top-level windows
 977 bool wxApp::SendIdleEvents()
 978 {
 979     bool needMore = FALSE;
 980     wxNode* node = wxTopLevelWindows.First();
 981     while (node)
 982     {
 983         wxWindow* win = (wxWindow*) node->Data();
 984         if (SendIdleEvents(win))
 985             needMore = TRUE;
 986
 987         node = node->Next();
 988     }
 989
 990     return needMore;
 991 }
 992
 993 // Send idle event to window and all subwindows
 994 bool wxApp::SendIdleEvents(wxWindow* win)
 995 {
 996   bool needMore = FALSE;
 997
 998   wxIdleEvent event;
 999   event.SetEventObject(win);
1000   win->GetEventHandler()->ProcessEvent(event);
1001
1002   if (event.MoreRequested())
1003     needMore = TRUE;
1004
1005   wxNode* node = win->GetChildren().First();
1006   while (node)
1007   {
1008     wxWindow* win = (wxWindow*) node->Data();
1009     if (SendIdleEvents(win))
1010       needMore = TRUE;
1011
1012     node = node->Next();
1013   }
1014   return needMore ;
1015 }
1016
1017 void wxApp::DeletePendingObjects()
1018 {
1019   wxNode *node = wxPendingDelete.First();
1020   while (node)
1021   {
1022     wxObject *obj = (wxObject *)node->Data();
1023
1024     delete obj;
1025
1026     if (wxPendingDelete.Member(obj))
1027       delete node;
1028
1029     // Deleting one object may have deleted other pending
1030     // objects, so start from beginning of list again.
1031     node = wxPendingDelete.First();
1032   }
1033 }
1034
1035 void wxApp::OnEndSession(wxCloseEvent& event)
1036 {
1037     if (GetTopWindow())
1038         GetTopWindow()->Close(TRUE);
1039 }
1040
1041 // Default behaviour: close the application with prompts. The
1042 // user can veto the close, and therefore the end session.
1043 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1044 {
1045     if (GetTopWindow())
1046     {
1047         if (!GetTopWindow()->Close(!event.CanVeto()))
1048             event.Veto(TRUE);
1049     }
1050 }
1051
1052 wxLog* wxApp::CreateLogTarget()
1053 {
1054     return new wxLogGui;
1055 }
1056
1057 wxWindow* wxApp::GetTopWindow() const
1058 {
1059     if (m_topWindow)
1060         return m_topWindow;
1061     else if (wxTopLevelWindows.Number() > 0)
1062         return (wxWindow*) wxTopLevelWindows.First()->Data();
1063     else
1064         return NULL;
1065 }
1066
1067 int wxApp::GetComCtl32Version() const
1068 {
1069     // have we loaded COMCTL32 yet?
1070     HMODULE theModule = ::GetModuleHandle("COMCTL32");
1071     int version = 0;
1072
1073     // if so, then we can check for the version
1074     if (theModule)
1075     {
1076         // InitCommonControlsEx is unique to 4.7 and later
1077         FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx");
1078
1079         if (! theProc)
1080         {                    // not found, must be 4.00
1081       version = 400;
1082         }
1083         else
1084         {
1085       // The following symbol are unique to 4.71
1086       //   DllInstall
1087       //   FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos
1088       //   FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo
1089       //   FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange
1090       //   FlatSB_ShowScrollBar
1091       //   _DrawIndirectImageList _DuplicateImageList
1092       //   InitializeFlatSB
1093       //   UninitializeFlatSB
1094       // we could check for any of these - I chose DllInstall
1095       FARPROC theProc = ::GetProcAddress(theModule, "DllInstall");
1096       if (! theProc)
1097       {
1098         // not found, must be 4.70
1099         version = 470;
1100       }
1101       else
1102       {                         // found, must be 4.71
1103         version = 471;
1104       }
1105         }
1106     }
1107     return version;
1108 }
1109
1110 void wxExit()
1111 {
1112   wxApp::CleanUp();
1113   FatalAppExit(0, "Fatal error: exiting");
1114 }
1115
1116 // Yield to incoming messages
1117 bool wxYield()
1118 {
1119   MSG msg;
1120   // We want to go back to the main message loop
1121   // if we see a WM_QUIT. (?)
1122   while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT)
1123   {
1124     if ( !wxTheApp->DoMessage() )
1125       break;
1126   }
1127
1128   return TRUE;
1129 }
1130
1131 HINSTANCE wxGetInstance()
1132 {
1133   return wxhInstance;
1134 }
1135
1136 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1137 // if in a separate file. So include it here to ensure it's linked.
1138 #if (defined(_MSC_VER) && !defined(__WIN32__)) || defined(__GNUWIN32__)
1139   #include "main.cpp"
1140 #endif