src/gtk/app.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        app.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Julian Smart
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11     #pragma implementation "app.h"
  12 #endif
  13
  14 #ifdef __VMS
  15 #include <vms_jackets.h>
  16 #endif
  17
  18 #include "wx/app.h"
  19 #include "wx/gdicmn.h"
  20 #include "wx/utils.h"
  21 #include "wx/intl.h"
  22 #include "wx/log.h"
  23 #include "wx/memory.h"
  24 #include "wx/font.h"
  25 #include "wx/settings.h"
  26 #include "wx/dialog.h"
  27 #include "wx/msgdlg.h"
  28 #include "wx/file.h"
  29
  30 #if wxUSE_WX_RESOURCES
  31     #include "wx/resource.h"
  32 #endif
  33
  34 #include "wx/module.h"
  35 #include "wx/image.h"
  36
  37 #ifdef __WXUNIVERSAL__
  38     #include "wx/univ/theme.h"
  39     #include "wx/univ/renderer.h"
  40 #endif
  41
  42 #if wxUSE_THREADS
  43     #include "wx/thread.h"
  44 #endif
  45
  46 #include <unistd.h>
  47 #if defined(__DARWIN__)
  48 // FIXME: select must be used instead of poll (GD)
  49 #elif defined(__VMS)
  50 # include <poll.h>
  51 #else
  52 # include <sys/poll.h>
  53 #endif
  54 #include "wx/gtk/win_gtk.h"
  55
  56 #include <gtk/gtk.h>
  57
  58
  59 //-----------------------------------------------------------------------------
  60 // global data
  61 //-----------------------------------------------------------------------------
  62
  63 wxApp *wxTheApp = (wxApp *)  NULL;
  64 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
  65
  66 bool   g_mainThreadLocked = FALSE;
  67 gint   g_pendingTag = 0;
  68
  69 static GtkWidget *gs_RootWindow = (GtkWidget*) NULL;
  70
  71 //-----------------------------------------------------------------------------
  72 // idle system
  73 //-----------------------------------------------------------------------------
  74
  75 extern bool g_isIdle;
  76
  77 void wxapp_install_idle_handler();
  78
  79 //-----------------------------------------------------------------------------
  80 // wxExit
  81 //-----------------------------------------------------------------------------
  82
  83 void wxExit()
  84 {
  85     gtk_main_quit();
  86 }
  87
  88 //-----------------------------------------------------------------------------
  89 // wxYield
  90 //-----------------------------------------------------------------------------
  91
  92 // not static because used by textctrl.cpp
  93 //
  94 // MT-FIXME
  95 bool wxIsInsideYield = FALSE;
  96
  97 bool wxApp::Yield(bool onlyIfNeeded)
  98 {
  99     if ( wxIsInsideYield )
 100     {
 101         if ( !onlyIfNeeded )
 102         {
 103             wxFAIL_MSG( wxT("wxYield called recursively" ) );
 104         }
 105
 106         return FALSE;
 107     }
 108
 109 #if wxUSE_THREADS
 110     if ( !wxThread::IsMain() )
 111     {
 112         // can't call gtk_main_iteration() from other threads like this
 113         return TRUE;
 114     }
 115 #endif // wxUSE_THREADS
 116
 117     wxIsInsideYield = TRUE;
 118
 119     if (!g_isIdle)
 120     {
 121         // We need to remove idle callbacks or the loop will
 122         // never finish.
 123         gtk_idle_remove( m_idleTag );
 124         m_idleTag = 0;
 125         g_isIdle = TRUE;
 126     }
 127
 128     // disable log flushing from here because a call to wxYield() shouldn't
 129     // normally result in message boxes popping up &c
 130     wxLog::Suspend();
 131
 132     while (gtk_events_pending())
 133         gtk_main_iteration();
 134
 135     // It's necessary to call ProcessIdle() to update the frames sizes which
 136     // might have been changed (it also will update other things set from
 137     // OnUpdateUI() which is a nice (and desired) side effect). But we
 138     // call ProcessIdle() only once since this is not meant for longish
 139     // background jobs (controlled by wxIdleEvent::RequestMore() and the
 140     // return value of Processidle().
 141     ProcessIdle();
 142
 143     // let the logs be flashed again
 144     wxLog::Resume();
 145
 146     wxIsInsideYield = FALSE;
 147
 148     return TRUE;
 149 }
 150
 151 //-----------------------------------------------------------------------------
 152 // wxWakeUpIdle
 153 //-----------------------------------------------------------------------------
 154
 155 void wxWakeUpIdle()
 156 {
 157 #if wxUSE_THREADS
 158     if (!wxThread::IsMain())
 159         wxMutexGuiEnter();
 160 #endif
 161
 162     if (g_isIdle)
 163         wxapp_install_idle_handler();
 164
 165 #if wxUSE_THREADS
 166     if (!wxThread::IsMain())
 167         wxMutexGuiLeave();
 168 #endif
 169 }
 170
 171 //-----------------------------------------------------------------------------
 172 // local functions
 173 //-----------------------------------------------------------------------------
 174
 175 // the callback functions must be extern "C" to comply with GTK+ declarations
 176 extern "C"
 177 {
 178
 179 static gint wxapp_pending_callback( gpointer WXUNUSED(data) )
 180 {
 181     if (!wxTheApp) return TRUE;
 182
 183     // When getting called from GDK's time-out handler
 184     // we are no longer within GDK's grab on the GUI
 185     // thread so we must lock it here ourselves.
 186     gdk_threads_enter();
 187
 188     // Sent idle event to all who request them.
 189     wxTheApp->ProcessPendingEvents();
 190
 191     g_pendingTag = 0;
 192
 193     // Flush the logged messages if any.
 194 #if wxUSE_LOG
 195     wxLog::FlushActive();
 196 #endif // wxUSE_LOG
 197
 198     // Release lock again
 199     gdk_threads_leave();
 200
 201     // Return FALSE to indicate that no more idle events are
 202     // to be sent (single shot instead of continuous stream)
 203     return FALSE;
 204 }
 205
 206 static gint wxapp_idle_callback( gpointer WXUNUSED(data) )
 207 {
 208     if (!wxTheApp)
 209         return TRUE;
 210
 211 #ifdef __WXDEBUG__
 212     // don't generate the idle events while the assert modal dialog is shown,
 213     // this completely confuses the apps which don't expect to be reentered
 214     // from some safely-looking functions
 215     if ( wxTheApp->IsInAssert() )
 216     {
 217         // But repaint the assertion message if necessary
 218         if (wxTopLevelWindows.GetCount() > 0)
 219         {
 220             wxWindow* win = (wxWindow*) wxTopLevelWindows.Last()->Data();
 221             if (win->IsKindOf(CLASSINFO(wxGenericMessageDialog)))
 222                 win->OnInternalIdle();
 223         }
 224         return TRUE;
 225     }
 226 #endif // __WXDEBUG__
 227
 228     // When getting called from GDK's time-out handler
 229     // we are no longer within GDK's grab on the GUI
 230     // thread so we must lock it here ourselves.
 231     gdk_threads_enter();
 232
 233     // Indicate that we are now in idle mode and event handlers
 234     // will have to reinstall the idle handler again.
 235     g_isIdle = TRUE;
 236     wxTheApp->m_idleTag = 0;
 237
 238     // Send idle event to all who request them as long as
 239     // no events have popped up in the event queue.
 240     while (wxTheApp->ProcessIdle() && (gtk_events_pending() == 0))
 241         ;
 242
 243     // Release lock again
 244     gdk_threads_leave();
 245
 246     // Return FALSE to indicate that no more idle events are
 247     // to be sent (single shot instead of continuous stream).
 248     return FALSE;
 249 }
 250
 251 #if wxUSE_THREADS
 252
 253 static gint wxapp_poll_func( GPollFD *ufds, guint nfds, gint timeout )
 254 {
 255     gint res;
 256     gdk_threads_enter();
 257
 258     wxMutexGuiLeave();
 259     g_mainThreadLocked = TRUE;
 260
 261 #ifdef __DARWIN__
 262     // FIXME: poll is not available under Darwin/Mac OS X and this needs
 263     //        to be implemented using select instead (GD)
 264     //        what about other BSD derived systems?
 265     res = -1;
 266 #else
 267     res = poll( (struct pollfd*) ufds, nfds, timeout );
 268 #endif
 269
 270     wxMutexGuiEnter();
 271     g_mainThreadLocked = FALSE;
 272
 273     gdk_threads_leave();
 274
 275     return res;
 276 }
 277
 278 #endif // wxUSE_THREADS
 279
 280 } // extern "C"
 281
 282 void wxapp_install_idle_handler()
 283 {
 284     wxASSERT_MSG( wxTheApp->m_idleTag == 0, wxT("attempt to install idle handler twice") );
 285
 286     g_isIdle = FALSE;
 287
 288     if (g_pendingTag == 0)
 289         g_pendingTag = gtk_idle_add_priority( 900, wxapp_pending_callback, (gpointer) NULL );
 290
 291     // This routine gets called by all event handlers
 292     // indicating that the idle is over. It may also
 293     // get called from other thread for sending events
 294     // to the main thread (and processing these in
 295     // idle time). Very low priority.
 296     wxTheApp->m_idleTag = gtk_idle_add_priority( 1000, wxapp_idle_callback, (gpointer) NULL );
 297 }
 298
 299 //-----------------------------------------------------------------------------
 300 // Access to the root window global
 301 //-----------------------------------------------------------------------------
 302
 303 GtkWidget* wxGetRootWindow()
 304 {
 305     if (gs_RootWindow == NULL)
 306     {
 307         gs_RootWindow = gtk_window_new( GTK_WINDOW_TOPLEVEL );
 308         gtk_widget_realize( gs_RootWindow );
 309     }
 310     return gs_RootWindow;
 311 }
 312
 313 //-----------------------------------------------------------------------------
 314 // wxApp
 315 //-----------------------------------------------------------------------------
 316
 317 IMPLEMENT_DYNAMIC_CLASS(wxApp,wxEvtHandler)
 318
 319 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 320     EVT_IDLE(wxApp::OnIdle)
 321 END_EVENT_TABLE()
 322
 323 wxApp::wxApp()
 324 {
 325     m_initialized = FALSE;
 326 #ifdef __WXDEBUG__
 327     m_isInAssert = FALSE;
 328 #endif // __WXDEBUG__
 329
 330     m_idleTag = 0;
 331     wxapp_install_idle_handler();
 332
 333 #if wxUSE_THREADS
 334     g_main_set_poll_func( wxapp_poll_func );
 335 #endif
 336
 337     m_colorCube = (unsigned char*) NULL;
 338
 339     // this is NULL for a "regular" wxApp, but is set (and freed) by a wxGLApp
 340     m_glVisualInfo = (void *) NULL;
 341 }
 342
 343 wxApp::~wxApp()
 344 {
 345     if (m_idleTag) gtk_idle_remove( m_idleTag );
 346
 347     if (m_colorCube) free(m_colorCube);
 348 }
 349
 350 bool wxApp::OnInitGui()
 351 {
 352     if ( !wxAppBase::OnInitGui() )
 353         return FALSE;
 354
 355     GdkVisual *visual = gdk_visual_get_system();
 356
 357     // if this is a wxGLApp (derived from wxApp), and we've already
 358     // chosen a specific visual, then derive the GdkVisual from that
 359     if (m_glVisualInfo != NULL)
 360     {
 361 #ifdef __WXGTK20__
 362         // seems gtk_widget_set_default_visual no longer exists?
 363         GdkVisual* vis = gtk_widget_get_default_visual();
 364 #else
 365         GdkVisual* vis = gdkx_visual_get(
 366             ((XVisualInfo *) m_glVisualInfo) ->visualid );
 367         gtk_widget_set_default_visual( vis );
 368 #endif
 369
 370         GdkColormap *colormap = gdk_colormap_new( vis, FALSE );
 371         gtk_widget_set_default_colormap( colormap );
 372
 373         visual = vis;
 374     }
 375
 376     // On some machines, the default visual is just 256 colours, so
 377     // we make sure we get the best. This can sometimes be wasteful.
 378
 379     else
 380     if ((gdk_visual_get_best() != gdk_visual_get_system()) && (m_useBestVisual))
 381     {
 382 #ifdef __WXGTK20__
 383         /* seems gtk_widget_set_default_visual no longer exists? */
 384         GdkVisual* vis = gtk_widget_get_default_visual();
 385 #else
 386         GdkVisual* vis = gdk_visual_get_best();
 387         gtk_widget_set_default_visual( vis );
 388 #endif
 389
 390         GdkColormap *colormap = gdk_colormap_new( vis, FALSE );
 391         gtk_widget_set_default_colormap( colormap );
 392
 393         visual = vis;
 394     }
 395
 396     // Nothing to do for 15, 16, 24, 32 bit displays
 397     if (visual->depth > 8) return TRUE;
 398
 399     // initialize color cube for 8-bit color reduction dithering
 400
 401     GdkColormap *cmap = gtk_widget_get_default_colormap();
 402
 403     m_colorCube = (unsigned char*)malloc(32 * 32 * 32);
 404
 405     for (int r = 0; r < 32; r++)
 406     {
 407         for (int g = 0; g < 32; g++)
 408         {
 409             for (int b = 0; b < 32; b++)
 410             {
 411                 int rr = (r << 3) | (r >> 2);
 412                 int gg = (g << 3) | (g >> 2);
 413                 int bb = (b << 3) | (b >> 2);
 414
 415                 int index = -1;
 416
 417                 GdkColor *colors = cmap->colors;
 418                 if (colors)
 419                 {
 420                     int max = 3 * 65536;
 421
 422                     for (int i = 0; i < cmap->size; i++)
 423                     {
 424                         int rdiff = ((rr << 8) - colors[i].red);
 425                         int gdiff = ((gg << 8) - colors[i].green);
 426                         int bdiff = ((bb << 8) - colors[i].blue);
 427                         int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
 428                         if (sum < max)
 429                         {
 430                             index = i; max = sum;
 431                         }
 432                     }
 433                 }
 434                 else
 435                 {
 436                     // assume 8-bit true or static colors. this really exists
 437                     GdkVisual* vis = gdk_colormap_get_visual( cmap );
 438                     index = (r >> (5 - vis->red_prec)) << vis->red_shift;
 439                     index |= (g >> (5 - vis->green_prec)) << vis->green_shift;
 440                     index |= (b >> (5 - vis->blue_prec)) << vis->blue_shift;
 441                 }
 442                 m_colorCube[ (r*1024) + (g*32) + b ] = index;
 443             }
 444         }
 445     }
 446
 447     return TRUE;
 448 }
 449
 450 GdkVisual *wxApp::GetGdkVisual()
 451 {
 452     GdkVisual *visual = NULL;
 453
 454     if (m_glVisualInfo)
 455         visual = gdkx_visual_get( ((XVisualInfo *) m_glVisualInfo)->visualid );
 456     else
 457         visual = gdk_window_get_visual( wxGetRootWindow()->window );
 458
 459     wxASSERT( visual );
 460
 461     return visual;
 462 }
 463
 464 bool wxApp::ProcessIdle()
 465 {
 466     wxIdleEvent event;
 467     event.SetEventObject( this );
 468     ProcessEvent( event );
 469
 470     return event.MoreRequested();
 471 }
 472
 473 void wxApp::OnIdle( wxIdleEvent &event )
 474 {
 475     static bool s_inOnIdle = FALSE;
 476
 477     // Avoid recursion (via ProcessEvent default case)
 478     if (s_inOnIdle)
 479         return;
 480
 481     s_inOnIdle = TRUE;
 482
 483     // Resend in the main thread events which have been prepared in other
 484     // threads
 485     ProcessPendingEvents();
 486
 487     // 'Garbage' collection of windows deleted with Close()
 488     DeletePendingObjects();
 489
 490     // Send OnIdle events to all windows
 491     bool needMore = SendIdleEvents();
 492
 493     if (needMore)
 494         event.RequestMore(TRUE);
 495
 496     s_inOnIdle = FALSE;
 497 }
 498
 499 bool wxApp::SendIdleEvents()
 500 {
 501     bool needMore = FALSE;
 502
 503     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
 504     while (node)
 505     {
 506         wxWindow* win = node->GetData();
 507         if (SendIdleEvents(win))
 508             needMore = TRUE;
 509
 510         node = node->GetNext();
 511     }
 512
 513     node = wxTopLevelWindows.GetFirst();
 514     while (node)
 515     {
 516         wxWindow* win = node->GetData();
 517         CallInternalIdle( win );
 518
 519         node = node->GetNext();
 520     }
 521     return needMore;
 522 }
 523
 524 bool wxApp::CallInternalIdle( wxWindow* win )
 525 {
 526     win->OnInternalIdle();
 527
 528     wxNode* node = win->GetChildren().First();
 529     while (node)
 530     {
 531         wxWindow* win = (wxWindow*) node->Data();
 532         CallInternalIdle( win );
 533
 534         node = node->Next();
 535     }
 536
 537     return TRUE;
 538 }
 539
 540 bool wxApp::SendIdleEvents( wxWindow* win )
 541 {
 542     bool needMore = FALSE;
 543
 544     wxIdleEvent event;
 545     event.SetEventObject(win);
 546
 547     win->GetEventHandler()->ProcessEvent(event);
 548
 549     if (event.MoreRequested())
 550         needMore = TRUE;
 551
 552     wxNode* node = win->GetChildren().First();
 553     while (node)
 554     {
 555         wxWindow* win = (wxWindow*) node->Data();
 556         if (SendIdleEvents(win))
 557             needMore = TRUE;
 558
 559         node = node->Next();
 560     }
 561
 562     return needMore;
 563 }
 564
 565 int wxApp::MainLoop()
 566 {
 567     gtk_main();
 568     return 0;
 569 }
 570
 571 void wxApp::ExitMainLoop()
 572 {
 573     if (gtk_main_level() > 0)
 574         gtk_main_quit();
 575 }
 576
 577 bool wxApp::Initialized()
 578 {
 579     return m_initialized;
 580 }
 581
 582 bool wxApp::Pending()
 583 {
 584     return (gtk_events_pending() > 0);
 585 }
 586
 587 void wxApp::Dispatch()
 588 {
 589     gtk_main_iteration();
 590 }
 591
 592 void wxApp::DeletePendingObjects()
 593 {
 594     wxNode *node = wxPendingDelete.First();
 595     while (node)
 596     {
 597         wxObject *obj = (wxObject *)node->Data();
 598
 599         delete obj;
 600
 601         if (wxPendingDelete.Find(obj))
 602             delete node;
 603
 604         node = wxPendingDelete.First();
 605     }
 606 }
 607
 608 bool wxApp::Initialize()
 609 {
 610     wxClassInfo::InitializeClasses();
 611
 612 #if wxUSE_INTL
 613     wxFont::SetDefaultEncoding(wxLocale::GetSystemEncoding());
 614 #endif
 615
 616     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 617     // create a module for that as it's part of the core.
 618 #if wxUSE_THREADS
 619     wxPendingEvents = new wxList();
 620     wxPendingEventsLocker = new wxCriticalSection();
 621 #endif
 622
 623     wxTheColourDatabase = new wxColourDatabase( wxKEY_STRING );
 624     wxTheColourDatabase->Initialize();
 625
 626     wxInitializeStockLists();
 627     wxInitializeStockObjects();
 628
 629 #if wxUSE_WX_RESOURCES
 630     wxInitializeResourceSystem();
 631 #endif
 632
 633     wxModule::RegisterModules();
 634     if (!wxModule::InitializeModules()) return FALSE;
 635
 636     return TRUE;
 637 }
 638
 639 void wxApp::CleanUp()
 640 {
 641     wxModule::CleanUpModules();
 642
 643 #if wxUSE_WX_RESOURCES
 644     wxCleanUpResourceSystem();
 645 #endif
 646
 647     delete wxTheColourDatabase;
 648     wxTheColourDatabase = (wxColourDatabase*) NULL;
 649
 650     wxDeleteStockObjects();
 651
 652     wxDeleteStockLists();
 653
 654     delete wxTheApp;
 655     wxTheApp = (wxApp*) NULL;
 656
 657     wxClassInfo::CleanUpClasses();
 658
 659 #if wxUSE_THREADS
 660     delete wxPendingEvents;
 661     delete wxPendingEventsLocker;
 662 #endif
 663
 664     // check for memory leaks
 665 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 666     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 667     {
 668         wxLogDebug(wxT("There were memory leaks.\n"));
 669         wxDebugContext::Dump();
 670         wxDebugContext::PrintStatistics();
 671     }
 672 #endif // Debug
 673
 674 #if wxUSE_LOG
 675     // do this as the very last thing because everything else can log messages
 676     wxLog::DontCreateOnDemand();
 677
 678     wxLog *oldLog = wxLog::SetActiveTarget( (wxLog*) NULL );
 679     if (oldLog)
 680         delete oldLog;
 681 #endif // wxUSE_LOG
 682 }
 683
 684 //-----------------------------------------------------------------------------
 685 // wxEntry
 686 //-----------------------------------------------------------------------------
 687
 688 // NB: argc and argv may be changed here, pass by reference!
 689 int wxEntryStart( int& argc, char *argv[] )
 690 {
 691 #if wxUSE_THREADS
 692     // GTK 1.2 up to version 1.2.3 has broken threads
 693     if ((gtk_major_version == 1) &&
 694         (gtk_minor_version == 2) &&
 695         (gtk_micro_version < 4))
 696     {
 697         printf( "wxWindows warning: GUI threading disabled due to outdated GTK version\n" );
 698     }
 699     else
 700     {
 701         g_thread_init(NULL);
 702     }
 703 #endif
 704
 705     gtk_set_locale();
 706
 707     // We should have the wxUSE_WCHAR_T test on the _outside_
 708 #if wxUSE_WCHAR_T
 709 #if defined(__WXGTK20__)
 710     // gtk+ 2.0 supports Unicode through UTF-8 strings
 711     wxConvCurrent = &wxConvUTF8;
 712 #else
 713     if (!wxOKlibc()) wxConvCurrent = &wxConvLocal;
 714 #endif
 715 #else
 716     if (!wxOKlibc()) wxConvCurrent = (wxMBConv*) NULL;
 717 #endif
 718
 719     gdk_threads_enter();
 720
 721     gtk_init( &argc, &argv );
 722
 723     wxSetDetectableAutoRepeat( TRUE );
 724
 725     if (!wxApp::Initialize())
 726     {
 727         gdk_threads_leave();
 728         return -1;
 729     }
 730
 731     return 0;
 732 }
 733
 734
 735 int wxEntryInitGui()
 736 {
 737     int retValue = 0;
 738
 739     if ( !wxTheApp->OnInitGui() )
 740         retValue = -1;
 741
 742     wxGetRootWindow();
 743
 744     return retValue;
 745 }
 746
 747
 748 void wxEntryCleanup()
 749 {
 750 #if wxUSE_LOG
 751     // flush the logged messages if any
 752     wxLog *log = wxLog::GetActiveTarget();
 753     if (log != NULL && log->HasPendingMessages())
 754         log->Flush();
 755
 756     // continuing to use user defined log target is unsafe from now on because
 757     // some resources may be already unavailable, so replace it by something
 758     // more safe
 759     wxLog *oldlog = wxLog::SetActiveTarget(new wxLogStderr);
 760     if ( oldlog )
 761         delete oldlog;
 762 #endif // wxUSE_LOG
 763
 764     wxApp::CleanUp();
 765
 766     gdk_threads_leave();
 767 }
 768
 769
 770 int wxEntry( int argc, char *argv[] )
 771 {
 772 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 773     // This seems to be necessary since there are 'rogue'
 774     // objects present at this point (perhaps global objects?)
 775     // Setting a checkpoint will ignore them as far as the
 776     // memory checking facility is concerned.
 777     // Of course you may argue that memory allocated in globals should be
 778     // checked, but this is a reasonable compromise.
 779     wxDebugContext::SetCheckpoint();
 780 #endif
 781     int err = wxEntryStart(argc, argv);
 782     if (err)
 783         return err;
 784
 785     if (!wxTheApp)
 786     {
 787         wxCHECK_MSG( wxApp::GetInitializerFunction(), -1,
 788                      wxT("wxWindows error: No initializer - use IMPLEMENT_APP macro.\n") );
 789
 790         wxAppInitializerFunction app_ini = wxApp::GetInitializerFunction();
 791
 792         wxObject *test_app = app_ini();
 793
 794         wxTheApp = (wxApp*) test_app;
 795     }
 796
 797     wxCHECK_MSG( wxTheApp, -1, wxT("wxWindows error: no application object") );
 798
 799     wxTheApp->argc = argc;
 800 #if wxUSE_UNICODE
 801     wxTheApp->argv = new wxChar*[argc+1];
 802     int mb_argc = 0;
 803     while (mb_argc < argc)
 804     {
 805         wxTheApp->argv[mb_argc] = wxStrdup(wxConvLibc.cMB2WX(argv[mb_argc]));
 806         mb_argc++;
 807     }
 808     wxTheApp->argv[mb_argc] = (wxChar *)NULL;
 809 #else
 810     wxTheApp->argv = argv;
 811 #endif
 812
 813     wxString name(wxFileNameFromPath(argv[0]));
 814     wxStripExtension( name );
 815     wxTheApp->SetAppName( name );
 816
 817     int retValue;
 818     retValue = wxEntryInitGui();
 819
 820     // Here frames insert themselves automatically into wxTopLevelWindows by
 821     // getting created in OnInit().
 822     if ( retValue == 0 )
 823     {
 824         if ( !wxTheApp->OnInit() )
 825             retValue = -1;
 826     }
 827
 828     if ( retValue == 0 )
 829     {
 830         // Delete pending toplevel windows
 831         wxTheApp->DeletePendingObjects();
 832
 833         // When is the app not initialized ?
 834         wxTheApp->m_initialized = TRUE;
 835
 836         if (wxTheApp->Initialized())
 837         {
 838             wxTheApp->OnRun();
 839
 840             wxWindow *topWindow = wxTheApp->GetTopWindow();
 841
 842             // Delete all pending windows if any
 843             wxTheApp->DeletePendingObjects();
 844
 845             // Reset top window
 846             if (topWindow)
 847                 wxTheApp->SetTopWindow( (wxWindow*) NULL );
 848
 849             retValue = wxTheApp->OnExit();
 850         }
 851     }
 852
 853     wxEntryCleanup();
 854
 855     return retValue;
 856 }
 857
 858 #ifdef __WXDEBUG__
 859
 860 void wxApp::OnAssert(const wxChar *file, int line, const wxChar* cond, const wxChar *msg)
 861 {
 862     m_isInAssert = TRUE;
 863
 864     wxAppBase::OnAssert(file, line, cond, msg);
 865
 866     m_isInAssert = FALSE;
 867 }
 868
 869 #endif // __WXDEBUG__
 870