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   #include "wx/dynarray.h"
  38 #endif
  39
  40 #include "wx/msw/private.h"
  41 #include "wx/log.h"
  42 #include "wx/module.h"
  43
  44 #if wxUSE_THREADS
  45     #include "wx/thread.h"
  46
  47     // define the array of MSG strutures
  48     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  49
  50     #include "wx/arrimpl.cpp"
  51
  52     WX_DEFINE_OBJARRAY(wxMsgArray);
  53 #endif // wxUSE_THREADS
  54
  55 #if wxUSE_WX_RESOURCES
  56   #include "wx/resource.h"
  57 #endif
  58
  59 // To UG: there's no point in putting this #if here
  60 // if you don't do the same for the Ole calls further down.
  61 // Also, OLE is used not just for drag and drop (it's used by automatn.cpp).
  62 // #if wxUSE_DRAG_AND_DROP
  63 #if !defined(__GNUWIN32__) && !defined(__SC__) && !defined(__SALFORDC__)
  64     #include <ole2.h>
  65 #endif
  66
  67 #include <string.h>
  68 #include <ctype.h>
  69
  70 #if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__)
  71   #include <commctrl.h>
  72 #endif
  73
  74 #include "wx/msw/msvcrt.h"
  75
  76 extern char *wxBuffer;
  77 extern char *wxOsVersion;
  78 extern wxList *wxWinHandleList;
  79 extern wxList WXDLLEXPORT wxPendingDelete;
  80 extern void wxSetKeyboardHook(bool doIt);
  81 extern wxCursor *g_globalCursor;
  82
  83 HINSTANCE wxhInstance = 0;
  84 static MSG s_currentMsg;
  85 wxApp *wxTheApp = NULL;
  86
  87 // @@ why not const? and not static?
  88 char wxFrameClassName[]         = "wxFrameClass";
  89 char wxMDIFrameClassName[]      = "wxMDIFrameClass";
  90 char wxMDIChildFrameClassName[] = "wxMDIChildFrameClass";
  91 char wxPanelClassName[]         = "wxPanelClass";
  92 char wxCanvasClassName[]        = "wxCanvasClass";
  93
  94 HICON wxSTD_FRAME_ICON = (HICON) NULL;
  95 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
  96 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
  97
  98 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
  99 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 100 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 101
 102 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 103
 104 LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 105
 106 #if !USE_SHARED_LIBRARY
 107   IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 108
 109   BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 110       EVT_IDLE(wxApp::OnIdle)
 111       EVT_END_SESSION(wxApp::OnEndSession)
 112       EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 113   END_EVENT_TABLE()
 114 #endif
 115
 116 long wxApp::sm_lastMessageTime = 0;
 117
 118 #if defined(__WIN95__) && !defined(__TWIN32__)
 119 #define wxUSE_RICHEDIT 1
 120 #else
 121 #define wxUSE_RICHEDIT 0
 122 #endif
 123
 124 #if wxUSE_RICHEDIT
 125   static HINSTANCE gs_hRichEdit = (HINSTANCE) NULL;
 126 #endif
 127
 128 //// Initialize
 129
 130 bool wxApp::Initialize()
 131 {
 132     // Some people may wish to use this, but
 133     // probably it shouldn't be here by default.
 134 #ifdef __WXDEBUG__
 135 //    wxRedirectIOToConsole();
 136 #endif
 137
 138     wxBuffer = new char[1500];
 139
 140     wxClassInfo::InitializeClasses();
 141
 142 #if wxUSE_RESOURCES
 143     wxGetResource("wxWindows", "OsVersion", &wxOsVersion);
 144 #endif
 145
 146     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 147     wxTheColourDatabase->Initialize();
 148
 149     wxInitializeStockLists();
 150     wxInitializeStockObjects();
 151
 152 #if wxUSE_WX_RESOURCES
 153     wxInitializeResourceSystem();
 154 #endif
 155
 156     wxBitmap::InitStandardHandlers();
 157
 158 #if defined(__WIN95__)
 159     InitCommonControls();
 160
 161 #if wxUSE_RICHEDIT
 162     gs_hRichEdit = LoadLibrary("RICHED32.DLL");
 163
 164     if (gs_hRichEdit == (HINSTANCE) NULL)
 165     {
 166       wxMessageBox("Could not initialise Rich Edit DLL");
 167     }
 168 #endif
 169
 170 #endif
 171
 172     int iMsg = 96;
 173
 174    // for OLE, enlarge message queue to be as large as possible
 175    while (!SetMessageQueue(iMsg) && (iMsg -= 8));
 176
 177 /*
 178     DWORD dwOleVer;
 179     dwOleVer = CoBuildVersion();
 180
 181     // check the OLE library version
 182     if (rmm != HIWORD(dwOleVer))
 183     {
 184         wxMessageBox("Incorrect version of OLE libraries.");
 185         return FALSE;
 186     }
 187 */
 188
 189 #if !defined(__GNUWIN32__) && !defined(__SC__) && !defined(__SALFORDC__)
 190     // we need to initialize OLE library
 191     if ( FAILED(::OleInitialize(NULL)) )
 192       wxFatalError(_("Cannot initialize OLE"));
 193 #endif
 194
 195 #if wxUSE_CTL3D
 196     if (!Ctl3dRegister(wxhInstance))
 197       wxFatalError("Cannot register CTL3D");
 198
 199     Ctl3dAutoSubclass(wxhInstance);
 200 #endif
 201
 202     g_globalCursor = new wxCursor;
 203
 204     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, "wxSTD_FRAME");
 205     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDIPARENTFRAME");
 206     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDICHILDFRAME");
 207
 208     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_FRAME");
 209     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDIPARENTFRAME");
 210     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDICHILDFRAME");
 211
 212     RegisterWindowClasses();
 213
 214     // Create the brush for disabling bitmap buttons
 215
 216     LOGBRUSH lb ;
 217     lb.lbStyle = BS_PATTERN;
 218     lb.lbHatch = (int)LoadBitmap( wxhInstance, "wxDISABLE_BUTTON_BITMAP" ) ;
 219     wxDisableButtonBrush = ::CreateBrushIndirect( & lb ) ;
 220     ::DeleteObject( (HGDIOBJ)lb.lbHatch ) ;
 221
 222 #if wxUSE_PENWINDOWS
 223     wxRegisterPenWin();
 224 #endif
 225
 226     wxWinHandleList = new wxList(wxKEY_INTEGER);
 227
 228     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 229     // PLEASE DO NOT ALTER THIS.
 230 #if defined(__VISUALC__) && !defined(WXMAKINGDLL)
 231     extern char wxDummyChar;
 232     if (wxDummyChar) wxDummyChar++;
 233 #endif
 234
 235     wxSetKeyboardHook(TRUE);
 236
 237     wxModule::RegisterModules();
 238     if (!wxModule::InitializeModules())
 239         return FALSE;
 240     return TRUE;
 241 }
 242
 243 //// RegisterWindowClasses
 244
 245 bool wxApp::RegisterWindowClasses()
 246 {
 247 ///////////////////////////////////////////////////////////////////////
 248 // Register the frame window class.
 249   WNDCLASS wndclass;   // Structure used to register Windows class.
 250
 251   wndclass.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 252   wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 253   wndclass.cbClsExtra    = 0;
 254   wndclass.cbWndExtra    = sizeof( DWORD ); // was 4
 255   wndclass.hInstance     = wxhInstance;
 256   wndclass.hIcon         = (HICON) NULL;        // wxSTD_FRAME_ICON;
 257   wndclass.hCursor       = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
 258   wndclass.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 259 //  wndclass.hbrBackground = GetStockObject( WHITE_BRUSH );
 260   wndclass.lpszMenuName  = NULL;
 261 #ifdef _MULTIPLE_INSTANCES
 262   sprintf( wxFrameClassName,"wxFrameClass%d", wxhInstance );
 263 #endif
 264   wndclass.lpszClassName = wxFrameClassName;
 265
 266   if (!RegisterClass( &wndclass ))
 267   {
 268     // wxFatalError("Can't register Frame Window class");
 269   }
 270
 271 ///////////////////////////////////////////////////////////////////////
 272 // Register the MDI frame window class.
 273   WNDCLASS wndclass1;   // Structure used to register Windows class.
 274
 275   wndclass1.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 276   wndclass1.lpfnWndProc   = (WNDPROC)wxWndProc;
 277   wndclass1.cbClsExtra    = 0;
 278   wndclass1.cbWndExtra    = sizeof( DWORD ); // was 4
 279   wndclass1.hInstance     = wxhInstance;
 280   wndclass1.hIcon         = (HICON) NULL; // wxSTD_MDIPARENTFRAME_ICON;
 281   wndclass1.hCursor       = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
 282 //  wndclass1.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 283   wndclass1.hbrBackground = (HBRUSH) NULL;
 284   wndclass1.lpszMenuName  = NULL;
 285
 286   wndclass1.lpszClassName = wxMDIFrameClassName;
 287   if (!RegisterClass( &wndclass1 ))
 288   {
 289 //    wxFatalError("Can't register MDI Frame window class");
 290 //  return FALSE;
 291   }
 292
 293 ///////////////////////////////////////////////////////////////////////
 294 // Register the MDI child frame window class.
 295   WNDCLASS wndclass4;   // Structure used to register Windows class.
 296
 297   wndclass4.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 298   wndclass4.lpfnWndProc   = (WNDPROC)wxWndProc;
 299   wndclass4.cbClsExtra    = 0;
 300   wndclass4.cbWndExtra    = sizeof( DWORD ); // was 4
 301   wndclass4.hInstance     = wxhInstance;
 302   wndclass4.hIcon         = (HICON) NULL;       // wxSTD_MDICHILDFRAME_ICON;
 303   wndclass4.hCursor       = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
 304   // TODO: perhaps this should be NULL so that Windows doesn't
 305   // paint the background itself (would OnEraseBackground duplicate
 306   // this?)
 307   wndclass4.hbrBackground =  (HBRUSH)(COLOR_WINDOW+1) ;
 308 //  wndclass4.hbrBackground = NULL;
 309   wndclass4.lpszMenuName  = NULL;
 310   wndclass4.lpszClassName = wxMDIChildFrameClassName;
 311
 312   if (!RegisterClass( &wndclass4 ))
 313   {
 314 //   wxFatalError("Can't register MDI child frame window class");
 315 //   return FALSE;
 316   }
 317
 318 ///////////////////////////////////////////////////////////////////////
 319 // Register the panel window class.
 320   WNDCLASS wndclass2;   // Structure used to register Windows class.
 321   memset(&wndclass2, 0, sizeof(WNDCLASS));   // start with NULL defaults
 322   wndclass2.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 323   wndclass2.lpfnWndProc   = (WNDPROC)wxWndProc;
 324   wndclass2.cbClsExtra    = 0;
 325   wndclass2.cbWndExtra    = sizeof( DWORD ); // was 4
 326   wndclass2.hInstance     = wxhInstance;
 327   wndclass2.hIcon         = (HICON) NULL;
 328   wndclass2.hCursor       = (HCURSOR) NULL;
 329 //  wndclass2.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1) ;
 330   wndclass2.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 331   wndclass2.lpszMenuName  = NULL;
 332   wndclass2.lpszClassName = wxPanelClassName;
 333   if (!RegisterClass( &wndclass2 ))
 334   {
 335 //   wxFatalError("Can't register Panel Window class");
 336 //   return FALSE;
 337   }
 338
 339 ///////////////////////////////////////////////////////////////////////
 340 // Register the canvas and textsubwindow class name
 341   WNDCLASS wndclass3;   // Structure used to register Windows class.
 342   memset(&wndclass3, 0, sizeof(WNDCLASS));   // start with NULL defaults
 343   // Use CS_OWNDC to avoid messing about restoring the context
 344   // for every graphic operation.
 345 //  wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_OWNDC | CS_DBLCLKS ;
 346   // wxWin 2.0
 347   wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 348   wndclass3.lpfnWndProc   = (WNDPROC)wxWndProc;
 349   wndclass3.cbClsExtra    = 0;
 350   wndclass3.cbWndExtra    = sizeof( DWORD ); // was 4
 351   wndclass3.hInstance     = wxhInstance;
 352   wndclass3.hIcon         = (HICON) NULL;
 353   wndclass3.hCursor       = (HCURSOR) NULL;
 354 //  wndclass3.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ;
 355   wndclass3.hbrBackground = (HBRUSH) NULL;
 356   wndclass3.lpszMenuName  = NULL;
 357   wndclass3.lpszClassName = wxCanvasClassName;
 358   if (!RegisterClass( &wndclass3))
 359   {
 360 //   wxFatalError("Can't register Canvas class");
 361 //   return FALSE;
 362   }
 363
 364   return TRUE;
 365 }
 366
 367 //// Convert Windows to argc, argv style
 368
 369 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 370 {
 371     wxStringList args;
 372
 373     wxString cmdLine(lpCmdLine);
 374     int count = 0;
 375
 376     // Get application name
 377     char name[260]; // 260 is MAX_PATH value from windef.h
 378     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 379
 380     // GNUWIN32 already fills in the first arg with the application name.
 381     // JACS: apparently not now (b20 and above?)
 382 #if 0 // !defined(__GNUWIN32__)
 383     args.Add(name);
 384     count ++;
 385 #endif
 386
 387     strcpy(name, wxFileNameFromPath(name));
 388     wxStripExtension(name);
 389     wxTheApp->SetAppName(name);
 390
 391     // Break up string
 392     // Treat strings enclosed in double-quotes as single arguments
 393     int i = 0;
 394     int len = cmdLine.Length();
 395     while (i < len)
 396     {
 397         // Skip whitespace
 398         while ((i < len) && isspace(cmdLine.GetChar(i)))
 399             i ++;
 400
 401         if (i < len)
 402         {
 403             if (cmdLine.GetChar(i) == '"') // We found the start of a string
 404             {
 405                 i ++;
 406                 int first = i;
 407                 while ((i < len) && (cmdLine.GetChar(i) != '"'))
 408                     i ++;
 409
 410                 wxString arg(cmdLine.Mid(first, (i - first)));
 411
 412                 args.Add(arg);
 413                 count ++;
 414
 415                 if (i < len)
 416                     i ++; // Skip past 2nd quote
 417             }
 418             else // Unquoted argument
 419             {
 420                 int first = i;
 421                 while ((i < len) && !isspace(cmdLine.GetChar(i)))
 422                     i ++;
 423
 424                 wxString arg(cmdLine.Mid(first, (i - first)));
 425
 426                 args.Add(arg);
 427                 count ++;
 428             }
 429         }
 430     }
 431
 432     wxTheApp->argv = new char*[count + 1];
 433     for (i = 0; i < count; i++)
 434     {
 435         wxString arg(args[i]);
 436         wxTheApp->argv[i] = copystring((const char*)arg);
 437     }
 438     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 439     wxTheApp->argc = count;
 440 }
 441
 442 //// Cleans up any wxWindows internal structures left lying around
 443
 444 void wxApp::CleanUp()
 445 {
 446   //// COMMON CLEANUP
 447
 448   // flush the logged messages if any
 449   wxLog *pLog = wxLog::GetActiveTarget();
 450   if ( pLog != NULL && pLog->HasPendingMessages() )
 451     pLog->Flush();
 452
 453   // One last chance for pending objects to be cleaned up
 454   wxTheApp->DeletePendingObjects();
 455
 456   wxModule::CleanUpModules();
 457
 458 #if wxUSE_WX_RESOURCES
 459   wxCleanUpResourceSystem();
 460
 461 //  wxDefaultResourceTable->ClearTable();
 462 #endif
 463
 464   // Indicate that the cursor can be freed,
 465   // so that cursor won't be deleted by deleting
 466   // the bitmap list before g_globalCursor goes out
 467   // of scope (double deletion of the cursor).
 468   wxSetCursor(wxNullCursor);
 469   delete g_globalCursor;
 470
 471   wxDeleteStockObjects() ;
 472
 473   // Destroy all GDI lists, etc.
 474   wxDeleteStockLists();
 475
 476   delete wxTheColourDatabase;
 477   wxTheColourDatabase = NULL;
 478
 479   wxBitmap::CleanUpHandlers();
 480
 481   delete[] wxBuffer;
 482   wxBuffer = NULL;
 483
 484   //// WINDOWS-SPECIFIC CLEANUP
 485
 486   wxSetKeyboardHook(FALSE);
 487
 488 #ifdef __WIN95__
 489
 490 #if wxUSE_RICHEDIT
 491   if (gs_hRichEdit != (HINSTANCE) NULL)
 492     FreeLibrary(gs_hRichEdit);
 493 #endif
 494
 495 #endif
 496
 497 #if wxUSE_PENWINDOWS
 498   wxCleanUpPenWin();
 499 #endif
 500
 501   if (wxSTD_FRAME_ICON)
 502     DestroyIcon(wxSTD_FRAME_ICON);
 503   if (wxSTD_MDICHILDFRAME_ICON)
 504     DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 505   if (wxSTD_MDIPARENTFRAME_ICON)
 506     DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 507
 508   if (wxDEFAULT_FRAME_ICON)
 509     DestroyIcon(wxDEFAULT_FRAME_ICON);
 510   if (wxDEFAULT_MDICHILDFRAME_ICON)
 511     DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 512   if (wxDEFAULT_MDIPARENTFRAME_ICON)
 513     DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 514
 515   if ( wxDisableButtonBrush )
 516     ::DeleteObject( wxDisableButtonBrush ) ;
 517
 518 #if !defined(__GNUWIN32__) && !defined(__SC__) && !defined(__SALFORDC__)
 519   ::OleUninitialize();
 520 #endif
 521
 522 #if wxUSE_CTL3D
 523   Ctl3dUnregister(wxhInstance);
 524 #endif
 525
 526   if (wxWinHandleList)
 527     delete wxWinHandleList ;
 528
 529   wxClassInfo::CleanUpClasses();
 530
 531   delete wxTheApp;
 532   wxTheApp = NULL;
 533
 534 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 535   // At this point we want to check if there are any memory
 536   // blocks that aren't part of the wxDebugContext itself,
 537   // as a special case. Then when dumping we need to ignore
 538   // wxDebugContext, too.
 539   if (wxDebugContext::CountObjectsLeft() > 0)
 540   {
 541       wxLogDebug("There were memory leaks.");
 542       wxDebugContext::Dump();
 543       wxDebugContext::PrintStatistics();
 544   }
 545 //  wxDebugContext::SetStream(NULL, NULL);
 546 #endif
 547
 548   // do it as the very last thing because everything else can log messages
 549   wxLog::DontCreateOnDemand();
 550   delete wxLog::SetActiveTarget(NULL);
 551 }
 552
 553 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 554
 555 // temporarily disable this warning
 556 #ifdef __VISUALC__
 557     #pragma warning(disable: 4715) // not all control paths return a value
 558 #endif // Visual C++
 559
 560 //// Main wxWindows entry point
 561 int wxEntry(WXHINSTANCE hInstance,
 562             WXHINSTANCE WXUNUSED(hPrevInstance),
 563             char *lpCmdLine,
 564             int nCmdShow,
 565             bool enterLoop)
 566 {
 567     // do check for memory leaks on program exit
 568     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 569     //  deallocated memory which may be used to simulate low-memory condition)
 570     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 571
 572   // take everything into a try-except block in release build
 573   // FIXME other compilers must support Win32 SEH (structured exception
 574   //       handling) too, just find the appropriate keyword in their docs!
 575   //       Please note that it's _not_ the same as C++ exceptions!
 576 #if !defined(__WXDEBUG__) && defined(__VISUALC__)
 577     #define CATCH_PROGRAM_EXCEPTIONS
 578
 579     __try {
 580 #else
 581     #undef  CATCH_PROGRAM_EXCEPTIONS
 582 #endif
 583
 584   wxhInstance = (HINSTANCE) hInstance;
 585
 586   if (!wxApp::Initialize())
 587     return 0;
 588
 589   // create the application object or ensure that one already exists
 590   if (!wxTheApp)
 591   {
 592     // The app may have declared a global application object, but we recommend
 593     // the IMPLEMENT_APP macro is used instead, which sets an initializer
 594     // function for delayed, dynamic app object construction.
 595     wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 596                  "No initializer - use IMPLEMENT_APP macro." );
 597
 598     wxTheApp = (*wxApp::GetInitializerFunction()) ();
 599   }
 600
 601   wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 602
 603   // save the WinMain() parameters
 604   wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 605   wxTheApp->m_nCmdShow = nCmdShow;
 606
 607   // GUI-specific initialisation. In fact on Windows we don't have any,
 608   // but this call is provided for compatibility across platforms.
 609   wxTheApp->OnInitGui() ;
 610
 611   int retValue = 0;
 612
 613   if ( wxTheApp->OnInit() )
 614   {
 615       if ( enterLoop )
 616       {
 617           retValue = wxTheApp->OnRun();
 618       }
 619       else
 620         // We want to initialize, but not run or exit immediately.
 621         return 1;
 622   }
 623   //else: app initialization failed, so we skipped OnRun()
 624
 625   wxWindow *topWindow = wxTheApp->GetTopWindow();
 626   if ( topWindow )
 627   {
 628       // Forcibly delete the window.
 629       if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 630            topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 631       {
 632           topWindow->Close(TRUE);
 633           wxTheApp->DeletePendingObjects();
 634       }
 635       else
 636       {
 637           delete topWindow;
 638           wxTheApp->SetTopWindow(NULL);
 639       }
 640   }
 641
 642   wxTheApp->OnExit();
 643
 644   wxApp::CleanUp();
 645
 646   return retValue;
 647
 648 #ifdef CATCH_PROGRAM_EXCEPTIONS
 649   }
 650   __except ( EXCEPTION_EXECUTE_HANDLER ) {
 651     /*
 652     if ( wxTheApp )
 653       wxTheApp->OnFatalException();
 654     */
 655
 656     ::ExitProcess(3); // the same exit code as abort()
 657
 658     // NOTREACHED
 659   }
 660 #endif // CATCH_PROGRAM_EXCEPTIONS
 661 }
 662
 663 // restore warning state
 664 #ifdef __VISUALC__
 665     #pragma warning(default: 4715) // not all control paths return a value
 666 #endif // Visual C++
 667
 668 #else /*  _WINDLL  */
 669
 670 //// Entry point for DLLs
 671
 672 int wxEntry(WXHINSTANCE hInstance)
 673 {
 674   wxhInstance = (HINSTANCE) hInstance;
 675   wxApp::Initialize();
 676
 677   // The app may have declared a global application object, but we recommend
 678   // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 679   // for delayed, dynamic app object construction.
 680
 681   if (!wxTheApp)
 682   {
 683     if (!wxApp::GetInitializerFunction())
 684     {
 685       MessageBox(NULL, "No initializer - use IMPLEMENT_APP macro.", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 686     return 0;
 687     }
 688
 689     wxTheApp = (* wxApp::GetInitializerFunction()) ();
 690   }
 691
 692   if (!wxTheApp) {
 693     MessageBox(NULL, "You have to define an instance of wxApp!", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 694     return 0;
 695   }
 696
 697   wxTheApp->argc = 0;
 698   wxTheApp->argv = NULL;
 699
 700   wxTheApp->OnInitGui();
 701
 702   wxTheApp->OnInit();
 703
 704   if (wxTheApp->GetTopWindow() && wxTheApp->GetTopWindow()->GetHWND()) {
 705     wxTheApp->GetTopWindow()->Show(TRUE);
 706   }
 707
 708   return 1;
 709 }
 710 #endif // _WINDLL
 711
 712 //// Static member initialization
 713
 714 wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
 715
 716 wxApp::wxApp()
 717 {
 718   m_topWindow = NULL;
 719   wxTheApp = this;
 720   m_className = "";
 721   m_wantDebugOutput = TRUE ;
 722   m_appName = "";
 723   argc = 0;
 724   argv = NULL;
 725 #ifdef __WXMSW__
 726   m_printMode = wxPRINT_WINDOWS;
 727 #else
 728   m_printMode = wxPRINT_POSTSCRIPT;
 729 #endif
 730   m_exitOnFrameDelete = TRUE;
 731   m_auto3D = TRUE;
 732 }
 733
 734 wxApp::~wxApp()
 735 {
 736   // Delete command-line args
 737   int i;
 738   for (i = 0; i < argc; i++)
 739   {
 740     delete[] argv[i];
 741   }
 742   delete[] argv;
 743 }
 744
 745 bool wxApp::Initialized()
 746 {
 747 #ifndef _WINDLL
 748   if (GetTopWindow())
 749     return TRUE;
 750   else
 751     return FALSE;
 752 #endif
 753 #ifdef _WINDLL // Assume initialized if DLL (no way of telling)
 754   return TRUE;
 755 #endif
 756 }
 757
 758 /*
 759  * Get and process a message, returning FALSE if WM_QUIT
 760  * received (and also set the flag telling the app to exit the main loop)
 761  *
 762  */
 763 bool wxApp::DoMessage()
 764 {
 765     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 766     if ( rc == 0 )
 767     {
 768         // got WM_QUIT
 769         m_keepGoing = FALSE;
 770
 771         return FALSE;
 772     }
 773     else if ( rc == -1 )
 774     {
 775         // should never happen, but let's test for it nevertheless
 776         wxLogLastError("GetMessage");
 777     }
 778     else
 779     {
 780 #if wxUSE_THREADS
 781         wxASSERT_MSG( wxThread::IsMain(),
 782                       "only the main thread can process Windows messages" );
 783
 784         static bool s_hadGuiLock = TRUE;
 785         static wxMsgArray s_aSavedMessages;
 786
 787         // if a secondary thread owns is doing GUI calls, save all messages for
 788         // later processing - we can't process them right now because it will
 789         // lead to recursive library calls (and we're not reentrant)
 790         if ( !wxGuiOwnedByMainThread() )
 791         {
 792             s_hadGuiLock = FALSE;
 793
 794             // leave out WM_COMMAND messages: too dangerous, sometimes
 795             // the message will be processed twice
 796             if ( !wxIsWaitingForThread() ||
 797                  s_currentMsg.message != WM_COMMAND )
 798             {
 799                 s_aSavedMessages.Add(s_currentMsg);
 800             }
 801
 802             return TRUE;
 803         }
 804         else
 805         {
 806             // have we just regained the GUI lock? if so, post all of the saved
 807             // messages
 808             //
 809             // FIXME of course, it's not _exactly_ the same as processing the
 810             //       messages normally - expect some things to break...
 811             if ( !s_hadGuiLock )
 812             {
 813                 s_hadGuiLock = TRUE;
 814
 815                 size_t count = s_aSavedMessages.Count();
 816                 for ( size_t n = 0; n < count; n++ )
 817                 {
 818                     MSG& msg = s_aSavedMessages[n];
 819
 820                     if ( !ProcessMessage((WXMSG *)&msg) )
 821                     {
 822                         ::TranslateMessage(&msg);
 823                         ::DispatchMessage(&msg);
 824                     }
 825                 }
 826
 827                 s_aSavedMessages.Empty();
 828             }
 829         }
 830 #endif // wxUSE_THREADS
 831
 832         // Process the message
 833         if ( !ProcessMessage((WXMSG *)&s_currentMsg) )
 834         {
 835             ::TranslateMessage(&s_currentMsg);
 836             wxApp::sm_lastMessageTime = s_currentMsg.time; /* MATTHEW: timeStamp impl. */
 837             ::DispatchMessage(&s_currentMsg);
 838         }
 839     }
 840
 841     return TRUE;
 842 }
 843
 844 /*
 845  * Keep trying to process messages until WM_QUIT
 846  * received.
 847  *
 848  * If there are messages to be processed, they will all be
 849  * processed and OnIdle will not be called.
 850  * When there are no more messages, OnIdle is called.
 851  * If OnIdle requests more time,
 852  * it will be repeatedly called so long as there are no pending messages.
 853  * A 'feature' of this is that once OnIdle has decided that no more processing
 854  * is required, then it won't get processing time until further messages
 855  * are processed (it'll sit in DoMessage).
 856  */
 857
 858 int wxApp::MainLoop()
 859 {
 860   m_keepGoing = TRUE;
 861
 862   while ( m_keepGoing )
 863   {
 864     #if wxUSE_THREADS
 865         wxMutexGuiLeaveOrEnter();
 866     #endif // wxUSE_THREADS
 867
 868     while ( !::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
 869             ProcessIdle() )
 870     {
 871     }
 872
 873     DoMessage();
 874   }
 875
 876   return s_currentMsg.wParam;
 877 }
 878
 879 // Returns TRUE if more time is needed.
 880 bool wxApp::ProcessIdle()
 881 {
 882     wxIdleEvent event;
 883     event.SetEventObject(this);
 884     ProcessEvent(event);
 885
 886     return event.MoreRequested();
 887 }
 888
 889 void wxApp::ExitMainLoop()
 890 {
 891   m_keepGoing = FALSE;
 892 }
 893
 894 bool wxApp::Pending()
 895 {
 896   return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0) ;
 897 }
 898
 899 void wxApp::Dispatch()
 900 {
 901     DoMessage();
 902 }
 903
 904 /*
 905  * Give all windows a chance to preprocess
 906  * the message. Some may have accelerator tables, or have
 907  * MDI complications.
 908  */
 909 bool wxApp::ProcessMessage(WXMSG *Msg)
 910 {
 911   MSG *msg = (MSG *)Msg;
 912
 913   HWND hWnd;
 914
 915   // Try translations first; find the youngest window with
 916   // a translation table.
 917   for (hWnd = msg->hwnd; hWnd != (HWND) NULL; hWnd = ::GetParent(hWnd))
 918   {
 919     wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
 920     if (wnd)
 921     {
 922        if (wnd->MSWTranslateMessage(Msg))
 923          return TRUE;
 924     }
 925   }
 926
 927   // Anyone for a non-translation message? Try youngest descendants first.
 928   for (hWnd = msg->hwnd; hWnd != (HWND) NULL; hWnd = ::GetParent(hWnd))
 929   {
 930     wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
 931     if (wnd)
 932     {
 933        if (wnd->MSWProcessMessage(Msg))
 934          return TRUE;
 935     }
 936   }
 937   return FALSE;
 938 }
 939
 940 void wxApp::OnIdle(wxIdleEvent& event)
 941 {
 942     static bool s_inOnIdle = FALSE;
 943
 944     // Avoid recursion (via ProcessEvent default case)
 945     if ( s_inOnIdle )
 946         return;
 947
 948     s_inOnIdle = TRUE;
 949
 950     // 'Garbage' collection of windows deleted with Close().
 951     DeletePendingObjects();
 952
 953     // flush the logged messages if any
 954     wxLog *pLog = wxLog::GetActiveTarget();
 955     if ( pLog != NULL && pLog->HasPendingMessages() )
 956         pLog->Flush();
 957
 958     // Send OnIdle events to all windows
 959     if ( SendIdleEvents() )
 960     {
 961         // SendIdleEvents() returns TRUE if at least one window requested more
 962         // idle events
 963         event.RequestMore(TRUE);
 964     }
 965
 966     s_inOnIdle = FALSE;
 967 }
 968
 969 // Send idle event to all top-level windows
 970 bool wxApp::SendIdleEvents()
 971 {
 972     bool needMore = FALSE;
 973     wxNode* node = wxTopLevelWindows.First();
 974     while (node)
 975     {
 976         wxWindow* win = (wxWindow*) node->Data();
 977         if (SendIdleEvents(win))
 978             needMore = TRUE;
 979
 980         node = node->Next();
 981     }
 982
 983     return needMore;
 984 }
 985
 986 // Send idle event to window and all subwindows
 987 bool wxApp::SendIdleEvents(wxWindow* win)
 988 {
 989   bool needMore = FALSE;
 990
 991   wxIdleEvent event;
 992   event.SetEventObject(win);
 993   win->GetEventHandler()->ProcessEvent(event);
 994
 995   if (event.MoreRequested())
 996     needMore = TRUE;
 997
 998   wxNode* node = win->GetChildren().First();
 999   while (node)
1000   {
1001     wxWindow* win = (wxWindow*) node->Data();
1002     if (SendIdleEvents(win))
1003       needMore = TRUE;
1004
1005     node = node->Next();
1006   }
1007   return needMore ;
1008 }
1009
1010 void wxApp::DeletePendingObjects()
1011 {
1012   wxNode *node = wxPendingDelete.First();
1013   while (node)
1014   {
1015     wxObject *obj = (wxObject *)node->Data();
1016
1017     delete obj;
1018
1019     if (wxPendingDelete.Member(obj))
1020       delete node;
1021
1022     // Deleting one object may have deleted other pending
1023     // objects, so start from beginning of list again.
1024     node = wxPendingDelete.First();
1025   }
1026 }
1027
1028 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1029 {
1030     if (GetTopWindow())
1031         GetTopWindow()->Close(TRUE);
1032 }
1033
1034 // Default behaviour: close the application with prompts. The
1035 // user can veto the close, and therefore the end session.
1036 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1037 {
1038     if (GetTopWindow())
1039     {
1040         if (!GetTopWindow()->Close(!event.CanVeto()))
1041             event.Veto(TRUE);
1042     }
1043 }
1044
1045 wxLog* wxApp::CreateLogTarget()
1046 {
1047     return new wxLogGui;
1048 }
1049
1050 wxWindow* wxApp::GetTopWindow() const
1051 {
1052     if (m_topWindow)
1053         return m_topWindow;
1054     else if (wxTopLevelWindows.Number() > 0)
1055         return (wxWindow*) wxTopLevelWindows.First()->Data();
1056     else
1057         return NULL;
1058 }
1059
1060 int wxApp::GetComCtl32Version() const
1061 {
1062     // have we loaded COMCTL32 yet?
1063     HMODULE theModule = ::GetModuleHandle("COMCTL32");
1064     int version = 0;
1065
1066     // if so, then we can check for the version
1067     if (theModule)
1068     {
1069         // InitCommonControlsEx is unique to 4.7 and later
1070         FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx");
1071
1072         if (! theProc)
1073         {                    // not found, must be 4.00
1074       version = 400;
1075         }
1076         else
1077         {
1078       // The following symbol are unique to 4.71
1079       //   DllInstall
1080       //   FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos
1081       //   FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo
1082       //   FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange
1083       //   FlatSB_ShowScrollBar
1084       //   _DrawIndirectImageList _DuplicateImageList
1085       //   InitializeFlatSB
1086       //   UninitializeFlatSB
1087       // we could check for any of these - I chose DllInstall
1088       FARPROC theProc = ::GetProcAddress(theModule, "DllInstall");
1089       if (! theProc)
1090       {
1091         // not found, must be 4.70
1092         version = 470;
1093       }
1094       else
1095       {                         // found, must be 4.71
1096         version = 471;
1097       }
1098         }
1099     }
1100     return version;
1101 }
1102
1103 void wxExit()
1104 {
1105   wxApp::CleanUp();
1106   FatalAppExit(0, "Fatal error: exiting");
1107 }
1108
1109 // Yield to incoming messages
1110 bool wxYield()
1111 {
1112   MSG msg;
1113   // We want to go back to the main message loop
1114   // if we see a WM_QUIT. (?)
1115   while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT)
1116   {
1117     if ( !wxTheApp->DoMessage() )
1118       break;
1119   }
1120
1121   return TRUE;
1122 }
1123
1124 HINSTANCE wxGetInstance()
1125 {
1126   return wxhInstance;
1127 }
1128
1129 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1130 // if in a separate file. So include it here to ensure it's linked.
1131 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__))
1132   #include "main.cpp"
1133 #endif