src/os2/app.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        app.cpp
   3 // Purpose:     wxApp
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/13/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/frame.h"
  17     #include "wx/app.h"
  18     #include "wx/utils.h"
  19     #include "wx/gdicmn.h"
  20     #include "wx/pen.h"
  21     #include "wx/brush.h"
  22     #include "wx/cursor.h"
  23     #include "wx/icon.h"
  24     #include "wx/palette.h"
  25     #include "wx/dc.h"
  26     #include "wx/dialog.h"
  27     #include "wx/msgdlg.h"
  28     #include "wx/intl.h"
  29     #include "wx/dynarray.h"
  30     #include "wx/wxchar.h"
  31     #include "wx/icon.h"
  32     #include "wx/timer.h"
  33 #endif
  34
  35 #include "wx/log.h"
  36 #include "wx/module.h"
  37
  38 #include "wx/os2/private.h"
  39
  40 #ifdef __EMX__
  41
  42 #include <sys/ioctl.h>
  43 #include <sys/select.h>
  44
  45 #else
  46
  47 #include <nerrno.h>
  48 #include <sys/ioctl.h>
  49 #include <sys/select.h>
  50 #include <sys/time.h>
  51
  52 #endif //
  53
  54 #ifndef __EMX__
  55
  56 #define select(a,b,c,d,e) bsdselect(a,b,c,d,e)
  57 extern "C" int _System bsdselect(int,
  58                                  struct fd_set *,
  59                                  struct fd_set *,
  60                                  struct fd_set *,
  61                                  struct timeval *);
  62 #endif
  63
  64 #if wxUSE_THREADS
  65     #include "wx/thread.h"
  66
  67     // define the array of QMSG strutures
  68     WX_DECLARE_OBJARRAY(QMSG, wxMsgArray);
  69
  70     #include "wx/arrimpl.cpp"
  71
  72     WX_DEFINE_OBJARRAY(wxMsgArray);
  73 #endif // wxUSE_THREADS
  74
  75 #if wxUSE_WX_RESOURCES
  76     #include "wx/resource.h"
  77 #endif
  78
  79 #if wxUSE_TOOLTIPS
  80     #include "wx/tooltip.h"
  81 #endif // wxUSE_TOOLTIPS
  82
  83 #include <string.h>
  84 #include <ctype.h>
  85
  86 // ---------------------------------------------------------------------------
  87 // global variables
  88 // ---------------------------------------------------------------------------
  89
  90 extern wxChar*                      wxBuffer;
  91 extern wxList*                      wxWinHandleList;
  92 extern wxList WXDLLEXPORT           wxPendingDelete;
  93 extern wxCursor*                    g_globalCursor;
  94
  95 HAB                                 vHabmain = NULLHANDLE;
  96 QMSG                                svCurrentMsg;
  97 wxApp*                              wxTheApp = NULL;
  98
  99
 100 HICON wxSTD_FRAME_ICON          = (HICON) NULL;
 101 HICON wxSTD_MDICHILDFRAME_ICON  = (HICON) NULL;
 102 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 103
 104 HICON wxDEFAULT_FRAME_ICON           = (HICON) NULL;
 105 HICON wxDEFAULT_MDICHILDFRAME_ICON   = (HICON) NULL;
 106 HICON wxDEFAULT_MDIPARENTFRAME_ICON  = (HICON) NULL;
 107
 108 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 109
 110 MRESULT EXPENTRY wxWndProc( HWND hWnd,ULONG message,MPARAM mp1,MPARAM mp2);
 111 MRESULT EXPENTRY wxFrameWndProc( HWND hWnd,ULONG message,MPARAM mp1,MPARAM mp2);
 112
 113 // ===========================================================================
 114 // implementation
 115 // ===========================================================================
 116
 117 // ---------------------------------------------------------------------------
 118 // helper struct and functions for socket handling
 119 // ---------------------------------------------------------------------------
 120
 121 struct GsocketCallbackInfo{
 122     void (*proc)(void *);
 123     int type;
 124     int handle;
 125     void* gsock;
 126 };
 127
 128 // These defines and wrapper functions are used here and in gsockpm.c
 129 #define wxSockReadMask  0x01
 130 #define wxSockWriteMask 0x02
 131
 132 #ifdef __EMX__
 133 extern "C"
 134 int wxAppAddSocketHandler(int handle, int mask,
 135                            void (*callback)(void*), void * gsock)
 136 {
 137     return wxTheApp->AddSocketHandler(handle, mask, callback, gsock);
 138 }
 139 extern "C"
 140 void wxAppRemoveSocketHandler(int handle)
 141 {
 142     wxTheApp->RemoveSocketHandler(handle);
 143 }
 144 #else
 145 //  Linkage mode problems using callbacks with extern C in a .cpp module
 146 int wxAppAddSocketHandler(int handle, int mask,
 147                            void (*callback)(void*), void * gsock)
 148 {
 149     return wxTheApp->AddSocketHandler(handle, mask, callback, gsock);
 150 }
 151 void wxAppRemoveSocketHandler(int handle)
 152 {
 153     wxTheApp->RemoveSocketHandler(handle);
 154 }
 155 #endif
 156
 157 void wxApp::HandleSockets()
 158 {
 159     bool pendingEvent = FALSE;
 160
 161     // Check whether it's time for Gsocket operation
 162     if (m_maxSocketHandles > 0 && m_maxSocketNr > 0)
 163     {
 164         fd_set readfds = m_readfds;
 165         fd_set writefds = m_writefds;
 166         struct timeval timeout;
 167         int i;
 168         struct GsocketCallbackInfo
 169           *CallbackInfo = (struct GsocketCallbackInfo *)m_sockCallbackInfo;
 170         int r = 0;
 171         timeout.tv_sec = 0;
 172         timeout.tv_usec = 0;
 173         if ( select(m_maxSocketNr, &readfds, &writefds, 0, &timeout) > 0)
 174         {
 175             for (i = m_lastUsedHandle + 1; i != m_lastUsedHandle; i++)
 176             {
 177                 if (i == m_maxSocketNr)
 178                     i = 0;
 179                 if (FD_ISSET(i, &readfds))
 180                 {
 181                     int r;
 182                     for (r = 0; r < m_maxSocketHandles; r++){
 183                         if(CallbackInfo[r].handle == i &&
 184                            CallbackInfo[r].type == wxSockReadMask)
 185                             break;
 186                     }
 187                     if (r < m_maxSocketHandles)
 188                     {
 189                         CallbackInfo[r].proc(CallbackInfo[r].gsock);
 190                         pendingEvent = TRUE;
 191                         wxYield();
 192                     }
 193                 }
 194                 if (FD_ISSET(i, &writefds))
 195                 {
 196                     int r;
 197                     for (r = 0; r < m_maxSocketHandles; r++)
 198                         if(CallbackInfo[r].handle == i &&
 199                            CallbackInfo[r].type == wxSockWriteMask)
 200                             break;
 201                     if (r < m_maxSocketHandles)
 202                     {
 203                         CallbackInfo[r].proc(CallbackInfo[r].gsock);
 204                         pendingEvent = TRUE;
 205                         wxYield();
 206                     }
 207                 }
 208             }
 209             m_lastUsedHandle = i;
 210         }
 211         if (pendingEvent)
 212             wxYield();
 213     }
 214 }
 215 // ---------------------------------------------------------------------------
 216 // wxApp
 217 // ---------------------------------------------------------------------------
 218
 219     IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 220
 221     BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 222         EVT_IDLE(wxApp::OnIdle)
 223         EVT_END_SESSION(wxApp::OnEndSession)
 224         EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 225     END_EVENT_TABLE()
 226
 227 //
 228 // Initialize
 229 //
 230 bool wxApp::Initialize(
 231   HAB                               vHab
 232 )
 233 {
 234 #if defined(wxUSE_CONSOLEDEBUG)
 235   #if wxUSE_CONSOLEDEBUG
 236 /***********************************************/
 237 /* Code for using stdout debug                 */
 238 /* To use it you mast link app as "Window" - EK*/
 239 /***********************************************/
 240   {
 241      PPIB pib;
 242      PTIB tib;
 243
 244     printf("In console\n");
 245
 246   DosGetInfoBlocks(&tib, &pib);
 247 /* Try morphing into a PM application. */
 248 //  if(pib->pib_ultype == 2)    /* VIO */
 249     pib->pib_ultype = 3;
 250    }
 251 /**********************************************/
 252 /**********************************************/
 253   #endif //wxUSE_CONSOLEDEBUG
 254 #endif
 255
 256     wxBuffer = new wxChar[1500]; // FIXME; why?
 257
 258     wxClassInfo::InitializeClasses();
 259
 260 #if wxUSE_THREADS
 261     wxPendingEventsLocker = new wxCriticalSection;
 262 #endif
 263
 264     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 265     wxTheColourDatabase->Initialize();
 266
 267     wxInitializeStockLists();
 268     wxInitializeStockObjects();
 269
 270 #if wxUSE_WX_RESOURCES
 271     wxInitializeResourceSystem();
 272 #endif
 273
 274     wxBitmap::InitStandardHandlers();
 275
 276     //
 277     // OS2 has to have an anchorblock
 278     //
 279     vHab = WinInitialize(0);
 280
 281     if (!vHab)
 282         return FALSE;
 283     else
 284         vHabmain = vHab;
 285
 286     // Some people may wish to use this, but
 287     // probably it shouldn't be here by default.
 288 #ifdef __WXDEBUG__
 289     //    wxRedirectIOToConsole();
 290 #endif
 291
 292     wxWinHandleList = new wxList(wxKEY_INTEGER);
 293
 294     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 295     // PLEASE DO NOT ALTER THIS.
 296 #if !defined(WXMAKINGDLL) && defined(__VISAGECPP__)
 297     extern char wxDummyChar;
 298     if (wxDummyChar) wxDummyChar++;
 299 #endif
 300
 301     // wxSetKeyboardHook(TRUE);
 302
 303     wxModule::RegisterModules();
 304     if (!wxModule::InitializeModules())
 305         return FALSE;
 306     RegisterWindowClasses(vHab);
 307     return TRUE;
 308 } // end of wxApp::Initialize
 309
 310 const char*                         CANTREGISTERCLASS = " Can't register Class ";
 311 // ---------------------------------------------------------------------------
 312 // RegisterWindowClasses
 313 // ---------------------------------------------------------------------------
 314
 315 bool wxApp::RegisterWindowClasses(
 316   HAB                               vHab
 317 )
 318 {
 319     ERRORID                         vError = 0L;
 320     wxString                        sError;
 321
 322     if (!::WinRegisterClass( vHab
 323                             ,wxFrameClassName
 324                             ,wxFrameWndProc
 325                             ,CS_SIZEREDRAW | CS_SYNCPAINT
 326                             ,sizeof(ULONG)
 327                            ))
 328     {
 329         vError = ::WinGetLastError(vHab);
 330         sError = wxPMErrorToStr(vError);
 331         wxLogLastError(sError);
 332         return FALSE;
 333     }
 334
 335     if (!::WinRegisterClass( vHab
 336                             ,wxFrameClassNameNoRedraw
 337                             ,wxWndProc
 338                             ,0
 339                             ,sizeof(ULONG)
 340                            ))
 341     {
 342         vError = ::WinGetLastError(vHab);
 343         sError = wxPMErrorToStr(vError);
 344         wxLogLastError(sError);
 345         return FALSE;
 346     }
 347
 348     if (!::WinRegisterClass( vHab
 349                             ,wxMDIFrameClassName
 350                             ,wxWndProc
 351                             ,CS_SIZEREDRAW | CS_MOVENOTIFY | CS_SYNCPAINT
 352                             ,sizeof(ULONG)
 353                            ))
 354     {
 355         vError = ::WinGetLastError(vHab);
 356         sError = wxPMErrorToStr(vError);
 357         wxLogLastError(sError);
 358         return FALSE;
 359     }
 360
 361     if (!::WinRegisterClass( vHab
 362                             ,wxMDIFrameClassNameNoRedraw
 363                             ,wxWndProc
 364                             ,0
 365                             ,sizeof(ULONG)
 366                            ))
 367     {
 368         vError = ::WinGetLastError(vHab);
 369         sError = wxPMErrorToStr(vError);
 370         wxLogLastError(sError);
 371         return FALSE;
 372     }
 373
 374     if (!::WinRegisterClass( vHab
 375                             ,wxMDIChildFrameClassName
 376                             ,wxWndProc
 377                             ,CS_MOVENOTIFY | CS_SIZEREDRAW | CS_SYNCPAINT | CS_HITTEST
 378                             ,sizeof(ULONG)
 379                            ))
 380     {
 381         vError = ::WinGetLastError(vHab);
 382         sError = wxPMErrorToStr(vError);
 383         wxLogLastError(sError);
 384         return FALSE;
 385     }
 386
 387     if (!::WinRegisterClass( vHab
 388                             ,wxMDIChildFrameClassNameNoRedraw
 389                             ,wxWndProc
 390                             ,CS_HITTEST
 391                             ,sizeof(ULONG)
 392                            ))
 393     {
 394         vError = ::WinGetLastError(vHab);
 395         sError = wxPMErrorToStr(vError);
 396         wxLogLastError(sError);
 397         return FALSE;
 398     }
 399
 400     if (!::WinRegisterClass( vHab
 401                             ,wxPanelClassName
 402                             ,wxWndProc
 403                             ,CS_MOVENOTIFY | CS_SIZEREDRAW | CS_HITTEST | CS_SAVEBITS | CS_SYNCPAINT
 404                             ,sizeof(ULONG)
 405                            ))
 406     {
 407         vError = ::WinGetLastError(vHab);
 408         sError = wxPMErrorToStr(vError);
 409         wxLogLastError(sError);
 410         return FALSE;
 411     }
 412
 413     if (!::WinRegisterClass( vHab
 414                             ,wxCanvasClassName
 415                             ,wxWndProc
 416                             ,CS_SIZEREDRAW | CS_HITTEST | CS_SYNCPAINT
 417                             ,sizeof(ULONG)
 418                            ))
 419     {
 420         vError = ::WinGetLastError(vHab);
 421         sError = wxPMErrorToStr(vError);
 422         wxLogLastError(sError);
 423         return FALSE;
 424     }
 425     return TRUE;
 426 } // end of wxApp::RegisterWindowClasses
 427
 428 //
 429 // Cleans up any wxWindows internal structures left lying around
 430 //
 431 void wxApp::CleanUp()
 432 {
 433     //
 434     // COMMON CLEANUP
 435     //
 436
 437 #if wxUSE_LOG
 438
 439     //
 440     // Flush the logged messages if any and install a 'safer' log target: the
 441     // default one (wxLogGui) can't be used after the resources are freed just
 442     // below and the user suppliedo ne might be even more unsafe (using any
 443     // wxWindows GUI function is unsafe starting from now)
 444     //
 445     wxLog::DontCreateOnDemand();
 446
 447     //
 448     // This will flush the old messages if any
 449     //
 450     delete wxLog::SetActiveTarget(new wxLogStderr);
 451 #endif // wxUSE_LOG
 452
 453     //
 454     // One last chance for pending objects to be cleaned up
 455     //
 456     wxTheApp->DeletePendingObjects();
 457
 458     wxModule::CleanUpModules();
 459
 460 #if wxUSE_WX_RESOURCES
 461     wxCleanUpResourceSystem();
 462 #endif
 463
 464     wxDeleteStockObjects();
 465
 466     //
 467     // Destroy all GDI lists, etc.
 468     //
 469     wxDeleteStockLists();
 470
 471     delete wxTheColourDatabase;
 472     wxTheColourDatabase = NULL;
 473
 474     wxBitmap::CleanUpHandlers();
 475
 476     delete[] wxBuffer;
 477     wxBuffer = NULL;
 478
 479     //
 480     // PM-SPECIFIC CLEANUP
 481     //
 482
 483     // wxSetKeyboardHook(FALSE);
 484
 485     if (wxSTD_FRAME_ICON)
 486         ::WinFreeFileIcon(wxSTD_FRAME_ICON);
 487     if (wxSTD_MDICHILDFRAME_ICON)
 488         ::WinFreeFileIcon(wxSTD_MDICHILDFRAME_ICON);
 489     if (wxSTD_MDIPARENTFRAME_ICON)
 490         ::WinFreeFileIcon(wxSTD_MDIPARENTFRAME_ICON);
 491
 492     if (wxDEFAULT_FRAME_ICON)
 493         ::WinFreeFileIcon(wxDEFAULT_FRAME_ICON);
 494     if (wxDEFAULT_MDICHILDFRAME_ICON)
 495         ::WinFreeFileIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 496     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 497         ::WinFreeFileIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 498
 499     if ( wxDisableButtonBrush )
 500     {
 501 // TODO:        ::DeleteObject( wxDisableButtonBrush );
 502     }
 503
 504     if (wxWinHandleList)
 505         delete wxWinHandleList;
 506
 507     delete wxPendingEvents;
 508 #if wxUSE_THREADS
 509     delete wxPendingEventsLocker;
 510     // If we don't do the following, we get an apparent memory leak.
 511     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 512 #endif
 513
 514     wxClassInfo::CleanUpClasses();
 515
 516     // Delete Message queue
 517     if (wxTheApp->m_hMq)
 518         ::WinDestroyMsgQueue(wxTheApp->m_hMq);
 519
 520     delete wxTheApp;
 521     wxTheApp = NULL;
 522
 523 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 524     // At this point we want to check if there are any memory
 525     // blocks that aren't part of the wxDebugContext itself,
 526     // as a special case. Then when dumping we need to ignore
 527     // wxDebugContext, too.
 528     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 529     {
 530         wxLogDebug(wxT("There were memory leaks."));
 531         wxDebugContext::Dump();
 532         wxDebugContext::PrintStatistics();
 533     }
 534     //  wxDebugContext::SetStream(NULL, NULL);
 535 #endif
 536
 537 #if wxUSE_LOG
 538     // do it as the very last thing because everything else can log messages
 539     delete wxLog::SetActiveTarget(NULL);
 540 #endif // wxUSE_LOG
 541 } // end of wxApp::CleanUp
 542
 543 //----------------------------------------------------------------------
 544 // Main wxWindows entry point
 545 //----------------------------------------------------------------------
 546 int wxEntry(
 547   int                               argc
 548 , char*                             argv[]
 549 )
 550 {
 551     HAB                             vHab = 0;
 552
 553     if (!wxApp::Initialize(vHab))
 554         return 0;
 555
 556     //
 557     // create the application object or ensure that one already exists
 558     //
 559     if (!wxTheApp)
 560     {
 561         // The app may have declared a global application object, but we recommend
 562         // the IMPLEMENT_APP macro is used instead, which sets an initializer
 563         // function for delayed, dynamic app object construction.
 564         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 565                      wxT("No initializer - use IMPLEMENT_APP macro.") );
 566         wxTheApp = (*wxApp::GetInitializerFunction()) ();
 567     }
 568     wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 569     wxTheApp->argc = argc;
 570
 571 #if wxUSE_UNICODE
 572     wxTheApp->argv = new wxChar*[argc+1];
 573
 574     int                             nArgc = 0;
 575
 576     while (nArgc < argc)
 577     {
 578           wxTheApp->argv[nArgc] = wxStrdup(wxConvLibc.cMB2WX(argv[nArgc]));
 579           nArgc++;
 580     }
 581     wxTheApp->argv[nArgc] = (wxChar *)NULL;
 582 #else
 583     wxTheApp->argv = argv;
 584 #endif
 585
 586     wxString                        sName(wxFileNameFromPath(argv[0]));
 587
 588     wxStripExtension(sName);
 589     wxTheApp->SetAppName(sName);
 590
 591     int                             nRetValue = 0;
 592
 593     if (!wxTheApp->OnInitGui())
 594         nRetValue = -1;
 595
 596     if (nRetValue == 0)
 597     {
 598         if (wxTheApp->OnInit())
 599         {
 600             nRetValue = wxTheApp->OnRun();
 601         }
 602         // Normal exit
 603         wxWindow*                   pTopWindow = wxTheApp->GetTopWindow();
 604         if (pTopWindow)
 605         {
 606             // Forcibly delete the window.
 607             if (pTopWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 608                 pTopWindow->IsKindOf(CLASSINFO(wxDialog)) )
 609             {
 610                 pTopWindow->Close(TRUE);
 611                 wxTheApp->DeletePendingObjects();
 612             }
 613             else
 614             {
 615                 delete pTopWindow;
 616                 wxTheApp->SetTopWindow(NULL);
 617             }
 618         }
 619     }
 620     else // app initialization failed
 621     {
 622         wxLogLastError(" Gui initialization failed, exitting");
 623     }
 624 #if wxUSE_CONSOLEDEBUG
 625     printf("wxTheApp->OnExit ");
 626     fflush(stdout);
 627 #endif
 628     wxTheApp->OnExit();
 629 #if wxUSE_CONSOLEDEBUG
 630     printf("wxApp::CleanUp ");
 631     fflush(stdout);
 632 #endif
 633     wxApp::CleanUp();
 634 #if wxUSE_CONSOLEDEBUG
 635     printf("return %i ", nRetValue);
 636     fflush(stdout);
 637 #endif
 638     return(nRetValue);
 639 } // end of wxEntry
 640
 641 bool wxApp::OnInitGui()
 642 {
 643     ERRORID                         vError;
 644     wxString                        sError;
 645
 646     if (!wxAppBase::OnInitGui())
 647         return FALSE;
 648
 649     m_hMq = ::WinCreateMsgQueue(vHabmain, 0);
 650     if (!m_hMq)
 651     {
 652         vError = ::WinGetLastError(vHabmain);
 653         sError = wxPMErrorToStr(vError);
 654         wxLogDebug(sError);
 655         return FALSE;
 656     }
 657
 658     return TRUE;
 659 } // end of wxApp::OnInitGui
 660
 661 //
 662 // Static member initialization
 663 //
 664 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 665
 666 wxApp::wxApp()
 667 {
 668     m_topWindow = NULL;
 669     wxTheApp = this;
 670
 671     argc = 0;
 672     argv = NULL;
 673     m_nPrintMode = wxPRINT_WINDOWS;
 674     m_exitOnFrameDelete = TRUE;
 675     m_bAuto3D = TRUE;
 676     m_hMq = 0;
 677     m_maxSocketHandles = 0;
 678     m_maxSocketNr = 0;
 679     m_sockCallbackInfo = 0;
 680 } // end of wxApp::wxApp
 681
 682 wxApp::~wxApp()
 683 {
 684     //
 685     // Delete command-line args
 686     //
 687 #if wxUSE_UNICODE
 688     int                             i;
 689
 690     for (i = 0; i < argc; i++)
 691     {
 692         delete[] argv[i];
 693     }
 694     delete[] argv;
 695 #endif
 696 } // end of wxApp::~wxApp
 697
 698 bool wxApp::Initialized()
 699 {
 700     if (GetTopWindow())
 701         return TRUE;
 702     else
 703         return FALSE;
 704 } // end of wxApp::Initialized
 705
 706 //
 707 // Get and process a message, returning FALSE if WM_QUIT
 708 // received (and also set the flag telling the app to exit the main loop)
 709 //
 710
 711 bool wxApp::DoMessage()
 712 {
 713     BOOL                            bRc = ::WinGetMsg(vHabmain, &svCurrentMsg, HWND(NULL), 0, 0);
 714
 715     if (bRc == 0)
 716     {
 717         // got WM_QUIT
 718         m_bKeepGoing = FALSE;
 719         return FALSE;
 720     }
 721     else if (bRc == -1)
 722     {
 723         // should never happen, but let's test for it nevertheless
 724         wxLogLastError("GetMessage");
 725     }
 726     else
 727     {
 728 #if wxUSE_THREADS
 729         wxASSERT_MSG( wxThread::IsMain()
 730                      ,wxT("only the main thread can process Windows messages")
 731                     );
 732
 733         static bool                 sbHadGuiLock = TRUE;
 734         static wxMsgArray           svSavedMessages;
 735
 736         //
 737         // If a secondary thread owns is doing GUI calls, save all messages for
 738         // later processing - we can't process them right now because it will
 739         // lead to recursive library calls (and we're not reentrant)
 740         //
 741         if (!wxGuiOwnedByMainThread())
 742         {
 743             sbHadGuiLock = FALSE;
 744
 745             //
 746             // Leave out WM_COMMAND messages: too dangerous, sometimes
 747             // the message will be processed twice
 748             //
 749             if ( !wxIsWaitingForThread() ||
 750                     svCurrentMsg.msg != WM_COMMAND )
 751             {
 752                 svSavedMessages.Add(svCurrentMsg);
 753             }
 754             return TRUE;
 755         }
 756         else
 757         {
 758             //
 759             // Have we just regained the GUI lock? if so, post all of the saved
 760             // messages
 761             //
 762             if (!sbHadGuiLock )
 763             {
 764                 sbHadGuiLock = TRUE;
 765
 766                 size_t             nCount = svSavedMessages.Count();
 767
 768                 for (size_t n = 0; n < nCount; n++)
 769                 {
 770                     QMSG            vMsg = svSavedMessages[n];
 771
 772                     DoMessage((WXMSG*)&vMsg);
 773                 }
 774                 svSavedMessages.Empty();
 775             }
 776         }
 777 #endif // wxUSE_THREADS
 778
 779         //
 780         // Process the message
 781         //
 782         DoMessage((WXMSG *)&svCurrentMsg);
 783     }
 784     return TRUE;
 785 } // end of wxApp::DoMessage
 786
 787 void wxApp::DoMessage(
 788   WXMSG*                            pMsg
 789 )
 790 {
 791     if (!ProcessMessage((WXMSG *)&svCurrentMsg))
 792     {
 793         ::WinDispatchMsg(vHabmain, (PQMSG)&svCurrentMsg);
 794     }
 795 } // end of wxApp::DoMessage
 796
 797 //////////////////////////////////////////////////////////////////////////////
 798 //
 799 // Keep trying to process messages until WM_QUIT
 800 // received.
 801 //
 802 // If there are messages to be processed, they will all be
 803 // processed and OnIdle will not be called.
 804 // When there are no more messages, OnIdle is called.
 805 // If OnIdle requests more time,
 806 // it will be repeatedly called so long as there are no pending messages.
 807 // A 'feature' of this is that once OnIdle has decided that no more processing
 808 // is required, then it won't get processing time until further messages
 809 // are processed (it'll sit in DoMessage).
 810 //
 811 //////////////////////////////////////////////////////////////////////////////
 812 int wxApp::MainLoop()
 813 {
 814     m_bKeepGoing = TRUE;
 815
 816     while (m_bKeepGoing)
 817     {
 818 #if wxUSE_THREADS
 819         wxMutexGuiLeaveOrEnter();
 820 #endif // wxUSE_THREADS
 821         while (!Pending() && ProcessIdle())
 822         {
 823             HandleSockets();
 824             wxUsleep(10000);
 825         }
 826         HandleSockets();
 827         if (Pending())
 828             DoMessage();
 829         else
 830             wxUsleep(10000);
 831
 832     }
 833     return (int)svCurrentMsg.mp1;
 834 } // end of wxApp::MainLoop
 835
 836 //
 837 // Returns TRUE if more time is needed.
 838 //
 839 bool wxApp::ProcessIdle()
 840 {
 841     wxIdleEvent                     vEvent;
 842
 843     vEvent.SetEventObject(this);
 844     ProcessEvent(vEvent);
 845     return vEvent.MoreRequested();
 846 } // end of wxApp::ProcessIdle
 847
 848 void wxApp::ExitMainLoop()
 849 {
 850     m_bKeepGoing = FALSE;
 851 }
 852
 853 bool wxApp::Pending()
 854 {
 855     return (::WinPeekMsg(vHabmain, (PQMSG)&svCurrentMsg, (HWND)NULL, 0, 0, PM_NOREMOVE) != 0);
 856 }
 857
 858 void wxApp::Dispatch()
 859 {
 860     DoMessage();
 861 }
 862
 863 //////////////////////////////////////////////////////////////////////////////
 864 //
 865 // Give all windows a chance to preprocess
 866 // the message. Some may have accelerator tables, or have
 867 // MDI complications.
 868 //
 869 //////////////////////////////////////////////////////////////////////////////
 870 bool wxApp::ProcessMessage(
 871   WXMSG*                            pWxmsg
 872 )
 873 {
 874     QMSG*                           pMsg = (PQMSG)pWxmsg;
 875     HWND                            hWnd = pMsg->hwnd;
 876     wxWindow*                       pWndThis = wxFindWinFromHandle((WXHWND)hWnd);
 877     wxWindow*                       pWnd;
 878
 879     //
 880     // Pass non-system timer messages to the wxTimerProc
 881     //
 882     if (pMsg->msg == WM_TIMER &&
 883         (SHORT1FROMMP(pMsg->mp1) != TID_CURSOR &&
 884          SHORT1FROMMP(pMsg->mp1) != TID_FLASHWINDOW &&
 885          SHORT1FROMMP(pMsg->mp1) != TID_SCROLL &&
 886          SHORT1FROMMP(pMsg->mp1) != 0x0000
 887         ))
 888         wxTimerProc(NULL, 0, (int)pMsg->mp1, 0);
 889
 890     //
 891     // Allow the window to prevent certain messages from being
 892     // translated/processed (this is currently used by wxTextCtrl to always
 893     // grab Ctrl-C/V/X, even if they are also accelerators in some parent)
 894     //
 895     if (pWndThis && !pWndThis->OS2ShouldPreProcessMessage(pWxmsg))
 896     {
 897         return FALSE;
 898     }
 899
 900     //
 901     // For some composite controls (like a combobox), wndThis might be NULL
 902     // because the subcontrol is not a wxWindow, but only the control itself
 903     // is - try to catch this case
 904     //
 905     while (hWnd && !pWndThis)
 906     {
 907         hWnd = ::WinQueryWindow(hWnd, QW_PARENT);
 908         pWndThis = wxFindWinFromHandle((WXHWND)hWnd);
 909     }
 910
 911     //
 912     // Try translations first; find the youngest window with
 913     // a translation table. OS/2 has case sensative accels, so
 914     // this block, coded by BK, removes that and helps make them
 915     // case insensative.
 916     //
 917     if(pMsg->msg == WM_CHAR)
 918     {
 919        PBYTE                        pChmsg = (PBYTE)&(pMsg->msg);
 920        USHORT                       uSch  = CHARMSG(pChmsg)->chr;
 921        bool                         bRc;
 922
 923        //
 924        // Do not process keyup events
 925        //
 926        if(!(CHARMSG(pChmsg)->fs & KC_KEYUP))
 927        {
 928            if((CHARMSG(pChmsg)->fs & (KC_ALT | KC_CTRL)) && CHARMSG(pChmsg)->chr != 0)
 929                 CHARMSG(pChmsg)->chr = (USHORT)wxToupper((UCHAR)uSch);
 930
 931
 932            for(pWnd = pWndThis; pWnd; pWnd = pWnd->GetParent() )
 933            {
 934                if((bRc = pWnd->OS2TranslateMessage(pWxmsg)) == TRUE)
 935                    break;
 936            }
 937
 938             if(!bRc)    // untranslated, should restore original value
 939                 CHARMSG(pChmsg)->chr = uSch;
 940         }
 941     }
 942     //
 943     // Anyone for a non-translation message? Try youngest descendants first.
 944     //
 945 //  for (pWnd = pWndThis; pWnd; pWnd = pWnd->GetParent())
 946 //  {
 947 //      if (pWnd->OS2ProcessMessage(pWxmsg))
 948 //          return TRUE;
 949 //  }
 950     return FALSE;
 951 } // end of wxApp::ProcessMessage
 952
 953 void wxApp::OnIdle(
 954   wxIdleEvent&                      rEvent
 955 )
 956 {
 957     static bool                     sbInOnIdle = FALSE;
 958
 959     //
 960     // Avoid recursion (via ProcessEvent default case)
 961     //
 962     if (sbInOnIdle)
 963         return;
 964
 965     sbInOnIdle = TRUE;
 966
 967     //
 968     // If there are pending events, we must process them: pending events
 969     // are either events to the threads other than main or events posted
 970     // with wxPostEvent() functions
 971     //
 972     ProcessPendingEvents();
 973
 974     //
 975     // 'Garbage' collection of windows deleted with Close().
 976     //
 977     DeletePendingObjects();
 978
 979 #if wxUSE_LOG
 980     //
 981     // Flush the logged messages if any
 982     //
 983     wxLog::FlushActive();
 984 #endif // wxUSE_LOG
 985
 986 #if wxUSE_DC_CACHEING
 987     // automated DC cache management: clear the cached DCs and bitmap
 988     // if it's likely that the app has finished with them, that is, we
 989     // get an idle event and we're not dragging anything.
 990     if (!::WinGetKeyState(HWND_DESKTOP, VK_BUTTON1) &&
 991         !::WinGetKeyState(HWND_DESKTOP, VK_BUTTON3) &&
 992         !::WinGetKeyState(HWND_DESKTOP, VK_BUTTON2))
 993         wxDC::ClearCache();
 994 #endif // wxUSE_DC_CACHEING
 995
 996     //
 997     // Send OnIdle events to all windows
 998     //
 999     if (SendIdleEvents())
1000     {
1001         //
1002         // SendIdleEvents() returns TRUE if at least one window requested more
1003         // idle events
1004         //
1005         rEvent.RequestMore(TRUE);
1006     }
1007     sbInOnIdle = FALSE;
1008 } // end of wxApp::OnIdle
1009
1010 // Send idle event to all top-level windows
1011 bool wxApp::SendIdleEvents()
1012 {
1013     bool                            bNeedMore = FALSE;
1014     wxWindowList::Node*             pNode = wxTopLevelWindows.GetFirst();
1015
1016     while (pNode)
1017     {
1018         wxWindow*                   pWin = pNode->GetData();
1019
1020         if (SendIdleEvents(pWin))
1021             bNeedMore = TRUE;
1022         pNode = pNode->GetNext();
1023     }
1024     return bNeedMore;
1025 } // end of wxApp::SendIdleEvents
1026
1027 //
1028 // Send idle event to window and all subwindows
1029 //
1030 bool wxApp::SendIdleEvents(
1031   wxWindow*                         pWin
1032 )
1033 {
1034     bool                            bNeedMore = FALSE;
1035     wxIdleEvent                     vEvent;
1036
1037     vEvent.SetEventObject(pWin);
1038     pWin->GetEventHandler()->ProcessEvent(vEvent);
1039
1040     if (vEvent.MoreRequested())
1041         bNeedMore = TRUE;
1042
1043     wxNode*                         pNode = pWin->GetChildren().First();
1044
1045     while (pNode)
1046     {
1047         wxWindow*                   pWin = (wxWindow*) pNode->Data();
1048
1049         if (SendIdleEvents(pWin))
1050             bNeedMore = TRUE;
1051         pNode = pNode->Next();
1052     }
1053     return bNeedMore;
1054 } // end of wxApp::SendIdleEvents
1055
1056 void wxApp::DeletePendingObjects()
1057 {
1058     wxNode*                         pNode = wxPendingDelete.First();
1059
1060     while (pNode)
1061     {
1062         wxObject*                   pObj = (wxObject *)pNode->Data();
1063
1064         delete pObj;
1065
1066         if (wxPendingDelete.Member(pObj))
1067             delete pNode;
1068
1069         //
1070         // Deleting one object may have deleted other pending
1071         // objects, so start from beginning of list again.
1072         //
1073         pNode = wxPendingDelete.First();
1074     }
1075 } // end of wxApp::DeletePendingObjects
1076
1077 void wxApp::OnEndSession(
1078   wxCloseEvent&                     WXUNUSED(rEvent))
1079 {
1080     if (GetTopWindow())
1081         GetTopWindow()->Close(TRUE);
1082 } // end of wxApp::OnEndSession
1083
1084 //
1085 // Default behaviour: close the application with prompts. The
1086 // user can veto the close, and therefore the end session.
1087 //
1088 void wxApp::OnQueryEndSession(
1089   wxCloseEvent&                     rEvent
1090 )
1091 {
1092     if (GetTopWindow())
1093     {
1094         if (!GetTopWindow()->Close(!rEvent.CanVeto()))
1095             rEvent.Veto(TRUE);
1096     }
1097 } // end of wxApp::OnQueryEndSession
1098
1099 void wxExit()
1100 {
1101     wxLogError(_("Fatal error: exiting"));
1102
1103     wxApp::CleanUp();
1104 } // end of wxExit
1105
1106 //
1107 // Yield to incoming messages
1108 //
1109 bool wxApp::Yield(bool onlyIfNeeded)
1110 {
1111     static bool s_inYield = FALSE;
1112
1113     if ( s_inYield )
1114     {
1115         if ( !onlyIfNeeded )
1116         {
1117             wxFAIL_MSG( _T("wxYield() called recursively") );
1118         }
1119
1120         return FALSE;
1121     }
1122
1123     HAB                             vHab = 0;
1124     QMSG                            vMsg;
1125
1126     //
1127     // Disable log flushing from here because a call to wxYield() shouldn't
1128     // normally result in message boxes popping up &c
1129     //
1130     wxLog::Suspend();
1131
1132     s_inYield = TRUE;
1133
1134     //
1135     // We want to go back to the main message loop
1136     // if we see a WM_QUIT. (?)
1137     //
1138     while (::WinPeekMsg(vHab, &vMsg, (HWND)NULL, 0, 0, PM_NOREMOVE) && vMsg.msg != WM_QUIT)
1139     {
1140 #if wxUSE_THREADS
1141         wxMutexGuiLeaveOrEnter();
1142 #endif // wxUSE_THREADS
1143         if (!wxTheApp->DoMessage())
1144             break;
1145     }
1146     //
1147     // If they are pending events, we must process them.
1148     //
1149     if (wxTheApp)
1150         wxTheApp->ProcessPendingEvents();
1151
1152     //
1153     // Let the logs be flashed again
1154     //
1155     wxLog::Resume();
1156     s_inYield = FALSE;
1157     return TRUE;
1158 } // end of wxYield
1159
1160 int wxApp::AddSocketHandler(int handle, int mask,
1161                             void (*callback)(void*), void * gsock)
1162 {
1163     int find;
1164     struct GsocketCallbackInfo
1165         *CallbackInfo = (struct GsocketCallbackInfo *)m_sockCallbackInfo;
1166
1167     for (find = 0; find < m_maxSocketHandles; find++)
1168         if (CallbackInfo[find].handle == -1)
1169             break;
1170     if (find == m_maxSocketHandles)
1171     {
1172         // Allocate new memory
1173         m_sockCallbackInfo = realloc(m_sockCallbackInfo,
1174                                      (m_maxSocketHandles+=10)*
1175                                      sizeof(struct GsocketCallbackInfo));
1176         CallbackInfo = (struct GsocketCallbackInfo *)m_sockCallbackInfo;
1177         for (find = m_maxSocketHandles - 10; find < m_maxSocketHandles; find++)
1178             CallbackInfo[find].handle = -1;
1179         find = m_maxSocketHandles - 10;
1180     }
1181     CallbackInfo[find].proc = callback;
1182     CallbackInfo[find].type = mask;
1183     CallbackInfo[find].handle = handle;
1184     CallbackInfo[find].gsock = gsock;
1185     if (mask & wxSockReadMask)
1186         FD_SET(handle, &m_readfds);
1187     if (mask & wxSockWriteMask)
1188         FD_SET(handle, &m_writefds);
1189     if (handle >= m_maxSocketNr)
1190         m_maxSocketNr = handle + 1;
1191     return find;
1192 }
1193
1194 void wxApp::RemoveSocketHandler(int handle)
1195 {
1196     struct GsocketCallbackInfo
1197         *CallbackInfo = (struct GsocketCallbackInfo *)m_sockCallbackInfo;
1198     if (handle < m_maxSocketHandles)
1199     {
1200         if (CallbackInfo[handle].type & wxSockReadMask)
1201             FD_CLR(CallbackInfo[handle].handle, &m_readfds);
1202         if (CallbackInfo[handle].type & wxSockWriteMask)
1203             FD_CLR(CallbackInfo[handle].handle, &m_writefds);
1204         CallbackInfo[handle].handle = -1;
1205     }
1206 }
1207
1208 //-----------------------------------------------------------------------------
1209 // wxWakeUpIdle
1210 //-----------------------------------------------------------------------------
1211
1212 void wxWakeUpIdle()
1213 {
1214     //
1215     // Send the top window a dummy message so idle handler processing will
1216     // start up again.  Doing it this way ensures that the idle handler
1217     // wakes up in the right thread (see also wxWakeUpMainThread() which does
1218     // the same for the main app thread only)
1219     //
1220     wxWindow*                       pTopWindow = wxTheApp->GetTopWindow();
1221
1222     if (pTopWindow)
1223     {
1224         if ( !::WinPostMsg(GetHwndOf(pTopWindow), WM_NULL, (MPARAM)0, (MPARAM)0))
1225         {
1226             //
1227             // Should never happen
1228             //
1229             wxLogLastError("PostMessage(WM_NULL)");
1230         }
1231     }
1232 } // end of wxWakeUpIdle
1233
1234 HAB wxGetInstance()
1235 {
1236     return vHabmain;
1237 }
1238
1239 void wxSetInstance(
1240   HAB                               vHab
1241 )
1242 {
1243     vHabmain = vHab;
1244 }
1245