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 #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 #ifndef WX_PRECOMP
  20     #include "wx/frame.h"
  21     #include "wx/app.h"
  22     #include "wx/utils.h"
  23     #include "wx/gdicmn.h"
  24     #include "wx/pen.h"
  25     #include "wx/brush.h"
  26     #include "wx/cursor.h"
  27     #include "wx/icon.h"
  28     #include "wx/palette.h"
  29     #include "wx/dc.h"
  30     #include "wx/dialog.h"
  31     #include "wx/msgdlg.h"
  32     #include "wx/intl.h"
  33     #include "wx/dynarray.h"
  34     #include "wx/wxchar.h"
  35     #include "wx/icon.h"
  36     #include "wx/timer.h"
  37 #endif
  38
  39 #include "wx/log.h"
  40 #include "wx/module.h"
  41
  42 #include "wx/os2/private.h"
  43
  44 #ifdef __EMX__
  45
  46 #include <sys/ioctl.h>
  47 #include <sys/select.h>
  48
  49 #else
  50
  51 #include <nerrno.h>
  52 #include <sys/ioctl.h>
  53 #include <sys/select.h>
  54 #include <sys/time.h>
  55
  56 #endif //
  57
  58 #ifndef __EMX__
  59
  60 #define select(a,b,c,d,e) bsdselect(a,b,c,d,e)
  61 extern "C" int _System bsdselect(int,
  62                                  struct fd_set *,
  63                                  struct fd_set *,
  64                                  struct fd_set *,
  65                                  struct timeval *);
  66 #endif
  67
  68 #if wxUSE_THREADS
  69     #include "wx/thread.h"
  70
  71     // define the array of QMSG strutures
  72     WX_DECLARE_OBJARRAY(QMSG, wxMsgArray);
  73
  74     #include "wx/arrimpl.cpp"
  75
  76     WX_DEFINE_OBJARRAY(wxMsgArray);
  77 #endif // wxUSE_THREADS
  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
  98
  99 HICON wxSTD_FRAME_ICON          = (HICON) NULL;
 100 HICON wxSTD_MDICHILDFRAME_ICON  = (HICON) NULL;
 101 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 102
 103 HICON wxDEFAULT_FRAME_ICON           = (HICON) NULL;
 104 HICON wxDEFAULT_MDICHILDFRAME_ICON   = (HICON) NULL;
 105 HICON wxDEFAULT_MDIPARENTFRAME_ICON  = (HICON) NULL;
 106
 107 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 108
 109 MRESULT EXPENTRY wxWndProc( HWND hWnd,ULONG message,MPARAM mp1,MPARAM mp2);
 110 MRESULT EXPENTRY wxFrameWndProc( HWND hWnd,ULONG message,MPARAM mp1,MPARAM mp2);
 111
 112 // ===========================================================================
 113 // implementation
 114 // ===========================================================================
 115
 116 // ---------------------------------------------------------------------------
 117 // helper struct and functions for socket handling
 118 // ---------------------------------------------------------------------------
 119
 120 struct GsocketCallbackInfo{
 121     void (*proc)(void *);
 122     int type;
 123     int handle;
 124     void* gsock;
 125 };
 126
 127 // These defines and wrapper functions are used here and in gsockpm.c
 128 #define wxSockReadMask  0x01
 129 #define wxSockWriteMask 0x02
 130
 131 #ifdef __EMX__
 132 extern "C"
 133 int wxAppAddSocketHandler(int handle, int mask,
 134                            void (*callback)(void*), void * gsock)
 135 {
 136     return wxTheApp->AddSocketHandler(handle, mask, callback, gsock);
 137 }
 138 extern "C"
 139 void wxAppRemoveSocketHandler(int handle)
 140 {
 141     wxTheApp->RemoveSocketHandler(handle);
 142 }
 143 #else
 144 //  Linkage mode problems using callbacks with extern C in a .cpp module
 145 int wxAppAddSocketHandler(int handle, int mask,
 146                            void (*callback)(void*), void * gsock)
 147 {
 148     return wxTheApp->AddSocketHandler(handle, mask, callback, gsock);
 149 }
 150 void wxAppRemoveSocketHandler(int handle)
 151 {
 152     wxTheApp->RemoveSocketHandler(handle);
 153 }
 154 #endif
 155
 156 void wxApp::HandleSockets()
 157 {
 158     bool pendingEvent = FALSE;
 159
 160     // Check whether it's time for Gsocket operation
 161     if (m_maxSocketHandles > 0 && m_maxSocketNr > 0)
 162     {
 163         fd_set readfds = m_readfds;
 164         fd_set writefds = m_writefds;
 165         struct timeval timeout;
 166         int i;
 167         struct GsocketCallbackInfo
 168           *CallbackInfo = (struct GsocketCallbackInfo *)m_sockCallbackInfo;
 169         int r = 0;
 170         timeout.tv_sec = 0;
 171         timeout.tv_usec = 0;
 172         if ( select(m_maxSocketNr, &readfds, &writefds, 0, &timeout) > 0)
 173         {
 174             for (i = m_lastUsedHandle + 1; i != m_lastUsedHandle; i++)
 175             {
 176                 if (i == m_maxSocketNr)
 177                     i = 0;
 178                 if (FD_ISSET(i, &readfds))
 179                 {
 180                     int r;
 181                     for (r = 0; r < m_maxSocketHandles; r++){
 182                         if(CallbackInfo[r].handle == i &&
 183                            CallbackInfo[r].type == wxSockReadMask)
 184                             break;
 185                     }
 186                     if (r < m_maxSocketHandles)
 187                     {
 188                         CallbackInfo[r].proc(CallbackInfo[r].gsock);
 189                         pendingEvent = TRUE;
 190                         wxYield();
 191                     }
 192                 }
 193                 if (FD_ISSET(i, &writefds))
 194                 {
 195                     int r;
 196                     for (r = 0; r < m_maxSocketHandles; r++)
 197                         if(CallbackInfo[r].handle == i &&
 198                            CallbackInfo[r].type == wxSockWriteMask)
 199                             break;
 200                     if (r < m_maxSocketHandles)
 201                     {
 202                         CallbackInfo[r].proc(CallbackInfo[r].gsock);
 203                         pendingEvent = TRUE;
 204                         wxYield();
 205                     }
 206                 }
 207             }
 208             m_lastUsedHandle = i;
 209         }
 210         if (pendingEvent)
 211             wxYield();
 212     }
 213 }
 214 // ---------------------------------------------------------------------------
 215 // wxApp
 216 // ---------------------------------------------------------------------------
 217
 218     IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 219
 220     BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 221         EVT_IDLE(wxApp::OnIdle)
 222         EVT_END_SESSION(wxApp::OnEndSession)
 223         EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 224     END_EVENT_TABLE()
 225
 226 //
 227 // Initialize
 228 //
 229 bool wxApp::Initialize(int& argc, wxChar **argv)
 230 {
 231     if ( !wxAppBase::Initialize(argc, argv) )
 232         return false;
 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     //
 257     // OS2 has to have an anchorblock
 258     //
 259     vHabmain = WinInitialize(0);
 260
 261     if (!vHabmain)
 262     {
 263         // TODO: at least give some error message here...
 264         wxAppBase::CleanUp();
 265
 266         return FALSE;
 267     }
 268
 269     wxBuffer = new wxChar[1500]; // FIXME; why?
 270
 271     // Some people may wish to use this, but
 272     // probably it shouldn't be here by default.
 273 #ifdef __WXDEBUG__
 274     //    wxRedirectIOToConsole();
 275 #endif
 276
 277     wxWinHandleList = new wxList(wxKEY_INTEGER);
 278
 279     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 280     // PLEASE DO NOT ALTER THIS.
 281 #if !defined(WXMAKINGDLL) && defined(__VISAGECPP__)
 282     extern char wxDummyChar;
 283     if (wxDummyChar) wxDummyChar++;
 284 #endif
 285
 286     // wxSetKeyboardHook(TRUE);
 287
 288     RegisterWindowClasses(vHab);
 289
 290     return TRUE;
 291 } // end of wxApp::Initialize
 292
 293 const char*                         CANTREGISTERCLASS = " Can't register Class ";
 294 // ---------------------------------------------------------------------------
 295 // RegisterWindowClasses
 296 // ---------------------------------------------------------------------------
 297
 298 bool wxApp::RegisterWindowClasses(
 299   HAB                               vHab
 300 )
 301 {
 302     ERRORID                         vError = 0L;
 303     wxString                        sError;
 304
 305     if (!::WinRegisterClass( vHab
 306                             ,wxFrameClassName
 307                             ,wxFrameWndProc
 308                             ,CS_SIZEREDRAW | CS_SYNCPAINT
 309                             ,sizeof(ULONG)
 310                            ))
 311     {
 312         vError = ::WinGetLastError(vHab);
 313         sError = wxPMErrorToStr(vError);
 314         wxLogLastError(sError);
 315         return FALSE;
 316     }
 317
 318     if (!::WinRegisterClass( vHab
 319                             ,wxFrameClassNameNoRedraw
 320                             ,wxWndProc
 321                             ,0
 322                             ,sizeof(ULONG)
 323                            ))
 324     {
 325         vError = ::WinGetLastError(vHab);
 326         sError = wxPMErrorToStr(vError);
 327         wxLogLastError(sError);
 328         return FALSE;
 329     }
 330
 331     if (!::WinRegisterClass( vHab
 332                             ,wxMDIFrameClassName
 333                             ,wxWndProc
 334                             ,CS_SIZEREDRAW | CS_MOVENOTIFY | CS_SYNCPAINT
 335                             ,sizeof(ULONG)
 336                            ))
 337     {
 338         vError = ::WinGetLastError(vHab);
 339         sError = wxPMErrorToStr(vError);
 340         wxLogLastError(sError);
 341         return FALSE;
 342     }
 343
 344     if (!::WinRegisterClass( vHab
 345                             ,wxMDIFrameClassNameNoRedraw
 346                             ,wxWndProc
 347                             ,0
 348                             ,sizeof(ULONG)
 349                            ))
 350     {
 351         vError = ::WinGetLastError(vHab);
 352         sError = wxPMErrorToStr(vError);
 353         wxLogLastError(sError);
 354         return FALSE;
 355     }
 356
 357     if (!::WinRegisterClass( vHab
 358                             ,wxMDIChildFrameClassName
 359                             ,wxWndProc
 360                             ,CS_MOVENOTIFY | CS_SIZEREDRAW | CS_SYNCPAINT | CS_HITTEST
 361                             ,sizeof(ULONG)
 362                            ))
 363     {
 364         vError = ::WinGetLastError(vHab);
 365         sError = wxPMErrorToStr(vError);
 366         wxLogLastError(sError);
 367         return FALSE;
 368     }
 369
 370     if (!::WinRegisterClass( vHab
 371                             ,wxMDIChildFrameClassNameNoRedraw
 372                             ,wxWndProc
 373                             ,CS_HITTEST
 374                             ,sizeof(ULONG)
 375                            ))
 376     {
 377         vError = ::WinGetLastError(vHab);
 378         sError = wxPMErrorToStr(vError);
 379         wxLogLastError(sError);
 380         return FALSE;
 381     }
 382
 383     if (!::WinRegisterClass( vHab
 384                             ,wxPanelClassName
 385                             ,wxWndProc
 386                             ,CS_MOVENOTIFY | CS_SIZEREDRAW | CS_HITTEST | CS_SAVEBITS | CS_SYNCPAINT
 387                             ,sizeof(ULONG)
 388                            ))
 389     {
 390         vError = ::WinGetLastError(vHab);
 391         sError = wxPMErrorToStr(vError);
 392         wxLogLastError(sError);
 393         return FALSE;
 394     }
 395
 396     if (!::WinRegisterClass( vHab
 397                             ,wxCanvasClassName
 398                             ,wxWndProc
 399                             ,CS_SIZEREDRAW | CS_HITTEST | CS_SYNCPAINT
 400                             ,sizeof(ULONG)
 401                            ))
 402     {
 403         vError = ::WinGetLastError(vHab);
 404         sError = wxPMErrorToStr(vError);
 405         wxLogLastError(sError);
 406         return FALSE;
 407     }
 408     if (!::WinRegisterClass( vHab
 409                             ,wxCanvasClassNameNR
 410                             ,wxWndProc
 411                             ,CS_HITTEST | CS_SYNCPAINT
 412                             ,sizeof(ULONG)
 413                            ))
 414     {
 415         vError = ::WinGetLastError(vHab);
 416         sError = wxPMErrorToStr(vError);
 417         wxLogLastError(sError);
 418         return FALSE;
 419     }
 420     return TRUE;
 421 } // end of wxApp::RegisterWindowClasses
 422
 423 //
 424 // Cleans up any wxWindows internal structures left lying around
 425 //
 426 void wxApp::CleanUp()
 427 {
 428     delete[] wxBuffer;
 429     wxBuffer = NULL;
 430
 431     //
 432     // PM-SPECIFIC CLEANUP
 433     //
 434
 435     // wxSetKeyboardHook(FALSE);
 436
 437     if (wxSTD_FRAME_ICON)
 438         ::WinFreeFileIcon(wxSTD_FRAME_ICON);
 439     if (wxSTD_MDICHILDFRAME_ICON)
 440         ::WinFreeFileIcon(wxSTD_MDICHILDFRAME_ICON);
 441     if (wxSTD_MDIPARENTFRAME_ICON)
 442         ::WinFreeFileIcon(wxSTD_MDIPARENTFRAME_ICON);
 443
 444     if (wxDEFAULT_FRAME_ICON)
 445         ::WinFreeFileIcon(wxDEFAULT_FRAME_ICON);
 446     if (wxDEFAULT_MDICHILDFRAME_ICON)
 447         ::WinFreeFileIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 448     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 449         ::WinFreeFileIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 450
 451     if ( wxDisableButtonBrush )
 452     {
 453 // TODO:        ::DeleteObject( wxDisableButtonBrush );
 454     }
 455
 456     if (wxWinHandleList)
 457         delete wxWinHandleList;
 458
 459     delete wxPendingEvents;
 460 #if wxUSE_THREADS
 461     delete wxPendingEventsLocker;
 462     // If we don't do the following, we get an apparent memory leak.
 463     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 464 #endif
 465
 466     // Delete Message queue
 467     if (wxTheApp->m_hMq)
 468         ::WinDestroyMsgQueue(wxTheApp->m_hMq);
 469
 470     wxAppBase::CleanUp();
 471 } // end of wxApp::CleanUp
 472
 473 bool wxApp::OnInitGui()
 474 {
 475     ERRORID                         vError;
 476     wxString                        sError;
 477
 478     if (!wxAppBase::OnInitGui())
 479         return FALSE;
 480
 481     m_hMq = ::WinCreateMsgQueue(vHabmain, 0);
 482     if (!m_hMq)
 483     {
 484         vError = ::WinGetLastError(vHabmain);
 485         sError = wxPMErrorToStr(vError);
 486         wxLogDebug(sError);
 487         return FALSE;
 488     }
 489
 490     return TRUE;
 491 } // end of wxApp::OnInitGui
 492
 493 wxApp::wxApp()
 494 {
 495     m_topWindow = NULL;
 496     wxTheApp = this;
 497
 498     argc = 0;
 499     argv = NULL;
 500     m_nPrintMode = wxPRINT_WINDOWS;
 501     m_bAuto3D = TRUE;
 502     m_hMq = 0;
 503     m_maxSocketHandles = 0;
 504     m_maxSocketNr = 0;
 505     m_sockCallbackInfo = 0;
 506 } // end of wxApp::wxApp
 507
 508 wxApp::~wxApp()
 509 {
 510     //
 511     // Delete command-line args
 512     //
 513 #if wxUSE_UNICODE
 514     int                             i;
 515
 516     for (i = 0; i < argc; i++)
 517     {
 518         delete[] argv[i];
 519     }
 520     delete[] argv;
 521 #endif
 522 } // end of wxApp::~wxApp
 523
 524 bool wxApp::Initialized()
 525 {
 526     if (GetTopWindow())
 527         return TRUE;
 528     else
 529         return FALSE;
 530 } // end of wxApp::Initialized
 531
 532 //
 533 // Get and process a message, returning FALSE if WM_QUIT
 534 // received (and also set the flag telling the app to exit the main loop)
 535 //
 536
 537 bool wxApp::DoMessage()
 538 {
 539     BOOL                            bRc = ::WinGetMsg(vHabmain, &svCurrentMsg, HWND(NULL), 0, 0);
 540
 541     if (bRc == 0)
 542     {
 543         // got WM_QUIT
 544         m_bKeepGoing = FALSE;
 545         return FALSE;
 546     }
 547     else if (bRc == -1)
 548     {
 549         // should never happen, but let's test for it nevertheless
 550         wxLogLastError("GetMessage");
 551     }
 552     else
 553     {
 554 #if wxUSE_THREADS
 555         wxASSERT_MSG( wxThread::IsMain()
 556                      ,wxT("only the main thread can process Windows messages")
 557                     );
 558
 559         static bool                 sbHadGuiLock = TRUE;
 560         static wxMsgArray           svSavedMessages;
 561
 562         //
 563         // If a secondary thread owns is doing GUI calls, save all messages for
 564         // later processing - we can't process them right now because it will
 565         // lead to recursive library calls (and we're not reentrant)
 566         //
 567         if (!wxGuiOwnedByMainThread())
 568         {
 569             sbHadGuiLock = FALSE;
 570
 571             //
 572             // Leave out WM_COMMAND messages: too dangerous, sometimes
 573             // the message will be processed twice
 574             //
 575             if ( !wxIsWaitingForThread() ||
 576                     svCurrentMsg.msg != WM_COMMAND )
 577             {
 578                 svSavedMessages.Add(svCurrentMsg);
 579             }
 580             return TRUE;
 581         }
 582         else
 583         {
 584             //
 585             // Have we just regained the GUI lock? if so, post all of the saved
 586             // messages
 587             //
 588             if (!sbHadGuiLock )
 589             {
 590                 sbHadGuiLock = TRUE;
 591
 592                 size_t             nCount = svSavedMessages.Count();
 593
 594                 for (size_t n = 0; n < nCount; n++)
 595                 {
 596                     QMSG            vMsg = svSavedMessages[n];
 597
 598                     DoMessage((WXMSG*)&vMsg);
 599                 }
 600                 svSavedMessages.Empty();
 601             }
 602         }
 603 #endif // wxUSE_THREADS
 604
 605         //
 606         // Process the message
 607         //
 608         DoMessage((WXMSG *)&svCurrentMsg);
 609     }
 610     return TRUE;
 611 } // end of wxApp::DoMessage
 612
 613 void wxApp::DoMessage(
 614   WXMSG*                            pMsg
 615 )
 616 {
 617     if (!ProcessMessage((WXMSG *)&svCurrentMsg))
 618     {
 619         ::WinDispatchMsg(vHabmain, (PQMSG)&svCurrentMsg);
 620     }
 621 } // end of wxApp::DoMessage
 622
 623 //////////////////////////////////////////////////////////////////////////////
 624 //
 625 // Keep trying to process messages until WM_QUIT
 626 // received.
 627 //
 628 // If there are messages to be processed, they will all be
 629 // processed and OnIdle will not be called.
 630 // When there are no more messages, OnIdle is called.
 631 // If OnIdle requests more time,
 632 // it will be repeatedly called so long as there are no pending messages.
 633 // A 'feature' of this is that once OnIdle has decided that no more processing
 634 // is required, then it won't get processing time until further messages
 635 // are processed (it'll sit in DoMessage).
 636 //
 637 //////////////////////////////////////////////////////////////////////////////
 638 int wxApp::MainLoop()
 639 {
 640     m_bKeepGoing = TRUE;
 641
 642     while (m_bKeepGoing)
 643     {
 644 #if wxUSE_THREADS
 645         wxMutexGuiLeaveOrEnter();
 646 #endif // wxUSE_THREADS
 647         while (!Pending() && ProcessIdle())
 648         {
 649             HandleSockets();
 650             wxUsleep(10000);
 651         }
 652         HandleSockets();
 653         if (Pending())
 654             DoMessage();
 655         else
 656             wxUsleep(10000);
 657
 658     }
 659     return (int)svCurrentMsg.mp1;
 660 } // end of wxApp::MainLoop
 661
 662 void wxApp::ExitMainLoop()
 663 {
 664     ::WinPostMsg(NULL, WM_QUIT, 0, 0);
 665 } // end of wxApp::ExitMainLoop
 666
 667 bool wxApp::Pending()
 668 {
 669     return (::WinPeekMsg(vHabmain, (PQMSG)&svCurrentMsg, (HWND)NULL, 0, 0, PM_NOREMOVE) != 0);
 670 } // end of wxApp::Pending
 671
 672 void wxApp::Dispatch()
 673 {
 674     DoMessage();
 675 }
 676
 677 //////////////////////////////////////////////////////////////////////////////
 678 //
 679 // Give all windows a chance to preprocess
 680 // the message. Some may have accelerator tables, or have
 681 // MDI complications.
 682 //
 683 //////////////////////////////////////////////////////////////////////////////
 684 bool wxApp::ProcessMessage(
 685   WXMSG*                            pWxmsg
 686 )
 687 {
 688     QMSG*                           pMsg = (PQMSG)pWxmsg;
 689     HWND                            hWnd = pMsg->hwnd;
 690     wxWindow*                       pWndThis = wxFindWinFromHandle((WXHWND)hWnd);
 691     wxWindow*                       pWnd;
 692
 693     //
 694     // Pass non-system timer messages to the wxTimerProc
 695     //
 696     if (pMsg->msg == WM_TIMER &&
 697         (SHORT1FROMMP(pMsg->mp1) != TID_CURSOR &&
 698          SHORT1FROMMP(pMsg->mp1) != TID_FLASHWINDOW &&
 699          SHORT1FROMMP(pMsg->mp1) != TID_SCROLL &&
 700          SHORT1FROMMP(pMsg->mp1) != 0x0000
 701         ))
 702         wxTimerProc(NULL, 0, (int)pMsg->mp1, 0);
 703
 704     //
 705     // Allow the window to prevent certain messages from being
 706     // translated/processed (this is currently used by wxTextCtrl to always
 707     // grab Ctrl-C/V/X, even if they are also accelerators in some parent)
 708     //
 709     if (pWndThis && !pWndThis->OS2ShouldPreProcessMessage(pWxmsg))
 710     {
 711         return FALSE;
 712     }
 713
 714     //
 715     // For some composite controls (like a combobox), wndThis might be NULL
 716     // because the subcontrol is not a wxWindow, but only the control itself
 717     // is - try to catch this case
 718     //
 719     while (hWnd && !pWndThis)
 720     {
 721         hWnd = ::WinQueryWindow(hWnd, QW_PARENT);
 722         pWndThis = wxFindWinFromHandle((WXHWND)hWnd);
 723     }
 724
 725     //
 726     // Try translations first; find the youngest window with
 727     // a translation table. OS/2 has case sensative accels, so
 728     // this block, coded by BK, removes that and helps make them
 729     // case insensative.
 730     //
 731     if(pMsg->msg == WM_CHAR)
 732     {
 733        PBYTE                        pChmsg = (PBYTE)&(pMsg->msg);
 734        USHORT                       uSch  = CHARMSG(pChmsg)->chr;
 735        bool                         bRc;
 736
 737        //
 738        // Do not process keyup events
 739        //
 740        if(!(CHARMSG(pChmsg)->fs & KC_KEYUP))
 741        {
 742            if((CHARMSG(pChmsg)->fs & (KC_ALT | KC_CTRL)) && CHARMSG(pChmsg)->chr != 0)
 743                 CHARMSG(pChmsg)->chr = (USHORT)wxToupper((UCHAR)uSch);
 744
 745
 746            for(pWnd = pWndThis; pWnd; pWnd = pWnd->GetParent() )
 747            {
 748                if((bRc = pWnd->OS2TranslateMessage(pWxmsg)) == TRUE)
 749                    break;
 750            }
 751
 752             if(!bRc)    // untranslated, should restore original value
 753                 CHARMSG(pChmsg)->chr = uSch;
 754         }
 755     }
 756     //
 757     // Anyone for a non-translation message? Try youngest descendants first.
 758     //
 759 //  for (pWnd = pWndThis; pWnd; pWnd = pWnd->GetParent())
 760 //  {
 761 //      if (pWnd->OS2ProcessMessage(pWxmsg))
 762 //          return TRUE;
 763 //  }
 764     return FALSE;
 765 } // end of wxApp::ProcessMessage
 766
 767 bool                                gbInOnIdle = FALSE;
 768
 769 void wxApp::OnIdle(
 770   wxIdleEvent&                      rEvent
 771 )
 772 {
 773
 774     //
 775     // Avoid recursion (via ProcessEvent default case)
 776     //
 777     if (gbInOnIdle)
 778         return;
 779
 780     gbInOnIdle = TRUE;
 781
 782     //
 783     // If there are pending events, we must process them: pending events
 784     // are either events to the threads other than main or events posted
 785     // with wxPostEvent() functions
 786     //
 787     ProcessPendingEvents();
 788
 789     //
 790     // 'Garbage' collection of windows deleted with Close().
 791     //
 792     DeletePendingObjects();
 793
 794 #if wxUSE_LOG
 795     //
 796     // Flush the logged messages if any
 797     //
 798     wxLog::FlushActive();
 799 #endif // wxUSE_LOG
 800
 801 #if wxUSE_DC_CACHEING
 802     // automated DC cache management: clear the cached DCs and bitmap
 803     // if it's likely that the app has finished with them, that is, we
 804     // get an idle event and we're not dragging anything.
 805     if (!::WinGetKeyState(HWND_DESKTOP, VK_BUTTON1) &&
 806         !::WinGetKeyState(HWND_DESKTOP, VK_BUTTON3) &&
 807         !::WinGetKeyState(HWND_DESKTOP, VK_BUTTON2))
 808         wxDC::ClearCache();
 809 #endif // wxUSE_DC_CACHEING
 810
 811     //
 812     // Send OnIdle events to all windows
 813     //
 814     if (SendIdleEvents())
 815     {
 816         //
 817         // SendIdleEvents() returns TRUE if at least one window requested more
 818         // idle events
 819         //
 820         rEvent.RequestMore(TRUE);
 821     }
 822     gbInOnIdle = FALSE;
 823 } // end of wxApp::OnIdle
 824
 825 void wxApp::OnEndSession(
 826   wxCloseEvent&                     WXUNUSED(rEvent))
 827 {
 828     if (GetTopWindow())
 829         GetTopWindow()->Close(TRUE);
 830 } // end of wxApp::OnEndSession
 831
 832 //
 833 // Default behaviour: close the application with prompts. The
 834 // user can veto the close, and therefore the end session.
 835 //
 836 void wxApp::OnQueryEndSession(
 837   wxCloseEvent&                     rEvent
 838 )
 839 {
 840     if (GetTopWindow())
 841     {
 842         if (!GetTopWindow()->Close(!rEvent.CanVeto()))
 843             rEvent.Veto(TRUE);
 844     }
 845 } // end of wxApp::OnQueryEndSession
 846
 847 void wxApp::Exit()
 848 {
 849     wxApp::CleanUp();
 850
 851     // VZ: must really exit somehow, insert appropriate OS/2 syscall (FIXME)
 852     wxAppConsole::Exit();
 853 } // end of wxExit
 854
 855 //
 856 // Yield to incoming messages
 857 //
 858 bool wxApp::Yield(bool onlyIfNeeded)
 859 {
 860     static bool s_inYield = FALSE;
 861
 862     if ( s_inYield )
 863     {
 864         if ( !onlyIfNeeded )
 865         {
 866             wxFAIL_MSG( _T("wxYield() called recursively") );
 867         }
 868
 869         return FALSE;
 870     }
 871
 872     HAB                             vHab = 0;
 873     QMSG                            vMsg;
 874
 875     //
 876     // Disable log flushing from here because a call to wxYield() shouldn't
 877     // normally result in message boxes popping up &c
 878     //
 879     wxLog::Suspend();
 880
 881     s_inYield = TRUE;
 882
 883     //
 884     // We want to go back to the main message loop
 885     // if we see a WM_QUIT. (?)
 886     //
 887     while (::WinPeekMsg(vHab, &vMsg, (HWND)NULL, 0, 0, PM_NOREMOVE) && vMsg.msg != WM_QUIT)
 888     {
 889 #if wxUSE_THREADS
 890         wxMutexGuiLeaveOrEnter();
 891 #endif // wxUSE_THREADS
 892         if (!wxTheApp->DoMessage())
 893             break;
 894     }
 895     //
 896     // If they are pending events, we must process them.
 897     //
 898     if (wxTheApp)
 899         wxTheApp->ProcessPendingEvents();
 900
 901     //
 902     // Let the logs be flashed again
 903     //
 904     wxLog::Resume();
 905     s_inYield = FALSE;
 906     return TRUE;
 907 } // end of wxYield
 908
 909 int wxApp::AddSocketHandler(int handle, int mask,
 910                             void (*callback)(void*), void * gsock)
 911 {
 912     int find;
 913     struct GsocketCallbackInfo
 914         *CallbackInfo = (struct GsocketCallbackInfo *)m_sockCallbackInfo;
 915
 916     for (find = 0; find < m_maxSocketHandles; find++)
 917         if (CallbackInfo[find].handle == -1)
 918             break;
 919     if (find == m_maxSocketHandles)
 920     {
 921         // Allocate new memory
 922         m_sockCallbackInfo = realloc(m_sockCallbackInfo,
 923                                      (m_maxSocketHandles+=10)*
 924                                      sizeof(struct GsocketCallbackInfo));
 925         CallbackInfo = (struct GsocketCallbackInfo *)m_sockCallbackInfo;
 926         for (find = m_maxSocketHandles - 10; find < m_maxSocketHandles; find++)
 927             CallbackInfo[find].handle = -1;
 928         find = m_maxSocketHandles - 10;
 929     }
 930     CallbackInfo[find].proc = callback;
 931     CallbackInfo[find].type = mask;
 932     CallbackInfo[find].handle = handle;
 933     CallbackInfo[find].gsock = gsock;
 934     if (mask & wxSockReadMask)
 935         FD_SET(handle, &m_readfds);
 936     if (mask & wxSockWriteMask)
 937         FD_SET(handle, &m_writefds);
 938     if (handle >= m_maxSocketNr)
 939         m_maxSocketNr = handle + 1;
 940     return find;
 941 }
 942
 943 void wxApp::RemoveSocketHandler(int handle)
 944 {
 945     struct GsocketCallbackInfo
 946         *CallbackInfo = (struct GsocketCallbackInfo *)m_sockCallbackInfo;
 947     if (handle < m_maxSocketHandles)
 948     {
 949         if (CallbackInfo[handle].type & wxSockReadMask)
 950             FD_CLR(CallbackInfo[handle].handle, &m_readfds);
 951         if (CallbackInfo[handle].type & wxSockWriteMask)
 952             FD_CLR(CallbackInfo[handle].handle, &m_writefds);
 953         CallbackInfo[handle].handle = -1;
 954     }
 955 }
 956
 957 //-----------------------------------------------------------------------------
 958 // wxWakeUpIdle
 959 //-----------------------------------------------------------------------------
 960
 961 void wxApp::WakeUpIdle()
 962 {
 963     //
 964     // Send the top window a dummy message so idle handler processing will
 965     // start up again.  Doing it this way ensures that the idle handler
 966     // wakes up in the right thread (see also wxWakeUpMainThread() which does
 967     // the same for the main app thread only)
 968     //
 969     wxWindow*                       pTopWindow = wxTheApp->GetTopWindow();
 970
 971     if (pTopWindow)
 972     {
 973         if ( !::WinPostMsg(GetHwndOf(pTopWindow), WM_NULL, (MPARAM)0, (MPARAM)0))
 974         {
 975             //
 976             // Should never happen
 977             //
 978             wxLogLastError("PostMessage(WM_NULL)");
 979         }
 980     }
 981 } // end of wxWakeUpIdle
 982
 983 HAB wxGetInstance()
 984 {
 985     return vHabmain;
 986 }
 987
 988 void wxSetInstance(
 989   HAB                               vHab
 990 )
 991 {
 992     vHabmain = vHab;
 993 }
 994