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_hMq = 0;
 502     m_maxSocketHandles = 0;
 503     m_maxSocketNr = 0;
 504     m_sockCallbackInfo = 0;
 505 } // end of wxApp::wxApp
 506
 507 wxApp::~wxApp()
 508 {
 509     //
 510     // Delete command-line args
 511     //
 512 #if wxUSE_UNICODE
 513     int                             i;
 514
 515     for (i = 0; i < argc; i++)
 516     {
 517         delete[] argv[i];
 518     }
 519     delete[] argv;
 520 #endif
 521 } // end of wxApp::~wxApp
 522
 523 bool wxApp::Initialized()
 524 {
 525     if (GetTopWindow())
 526         return TRUE;
 527     else
 528         return FALSE;
 529 } // end of wxApp::Initialized
 530
 531 //
 532 // Get and process a message, returning FALSE if WM_QUIT
 533 // received (and also set the flag telling the app to exit the main loop)
 534 //
 535
 536 bool wxApp::DoMessage()
 537 {
 538     BOOL                            bRc = ::WinGetMsg(vHabmain, &svCurrentMsg, HWND(NULL), 0, 0);
 539
 540     if (bRc == 0)
 541     {
 542         // got WM_QUIT
 543         m_bKeepGoing = FALSE;
 544         return FALSE;
 545     }
 546     else if (bRc == -1)
 547     {
 548         // should never happen, but let's test for it nevertheless
 549         wxLogLastError("GetMessage");
 550     }
 551     else
 552     {
 553 #if wxUSE_THREADS
 554         wxASSERT_MSG( wxThread::IsMain()
 555                      ,wxT("only the main thread can process Windows messages")
 556                     );
 557
 558         static bool                 sbHadGuiLock = TRUE;
 559         static wxMsgArray           svSavedMessages;
 560
 561         //
 562         // If a secondary thread owns is doing GUI calls, save all messages for
 563         // later processing - we can't process them right now because it will
 564         // lead to recursive library calls (and we're not reentrant)
 565         //
 566         if (!wxGuiOwnedByMainThread())
 567         {
 568             sbHadGuiLock = FALSE;
 569
 570             //
 571             // Leave out WM_COMMAND messages: too dangerous, sometimes
 572             // the message will be processed twice
 573             //
 574             if ( !wxIsWaitingForThread() ||
 575                     svCurrentMsg.msg != WM_COMMAND )
 576             {
 577                 svSavedMessages.Add(svCurrentMsg);
 578             }
 579             return TRUE;
 580         }
 581         else
 582         {
 583             //
 584             // Have we just regained the GUI lock? if so, post all of the saved
 585             // messages
 586             //
 587             if (!sbHadGuiLock )
 588             {
 589                 sbHadGuiLock = TRUE;
 590
 591                 size_t             nCount = svSavedMessages.Count();
 592
 593                 for (size_t n = 0; n < nCount; n++)
 594                 {
 595                     QMSG            vMsg = svSavedMessages[n];
 596
 597                     DoMessage((WXMSG*)&vMsg);
 598                 }
 599                 svSavedMessages.Empty();
 600             }
 601         }
 602 #endif // wxUSE_THREADS
 603
 604         //
 605         // Process the message
 606         //
 607         DoMessage((WXMSG *)&svCurrentMsg);
 608     }
 609     return TRUE;
 610 } // end of wxApp::DoMessage
 611
 612 void wxApp::DoMessage(
 613   WXMSG*                            pMsg
 614 )
 615 {
 616     if (!ProcessMessage((WXMSG *)&svCurrentMsg))
 617     {
 618         ::WinDispatchMsg(vHabmain, (PQMSG)&svCurrentMsg);
 619     }
 620 } // end of wxApp::DoMessage
 621
 622 //////////////////////////////////////////////////////////////////////////////
 623 //
 624 // Keep trying to process messages until WM_QUIT
 625 // received.
 626 //
 627 // If there are messages to be processed, they will all be
 628 // processed and OnIdle will not be called.
 629 // When there are no more messages, OnIdle is called.
 630 // If OnIdle requests more time,
 631 // it will be repeatedly called so long as there are no pending messages.
 632 // A 'feature' of this is that once OnIdle has decided that no more processing
 633 // is required, then it won't get processing time until further messages
 634 // are processed (it'll sit in DoMessage).
 635 //
 636 //////////////////////////////////////////////////////////////////////////////
 637 int wxApp::MainLoop()
 638 {
 639     m_bKeepGoing = TRUE;
 640
 641     while (m_bKeepGoing)
 642     {
 643 #if wxUSE_THREADS
 644         wxMutexGuiLeaveOrEnter();
 645 #endif // wxUSE_THREADS
 646         while (!Pending() && ProcessIdle())
 647         {
 648             HandleSockets();
 649             wxUsleep(10000);
 650         }
 651         HandleSockets();
 652         if (Pending())
 653             DoMessage();
 654         else
 655             wxUsleep(10000);
 656
 657     }
 658     return (int)svCurrentMsg.mp1;
 659 } // end of wxApp::MainLoop
 660
 661 void wxApp::ExitMainLoop()
 662 {
 663     ::WinPostMsg(NULL, WM_QUIT, 0, 0);
 664 } // end of wxApp::ExitMainLoop
 665
 666 bool wxApp::Pending()
 667 {
 668     return (::WinPeekMsg(vHabmain, (PQMSG)&svCurrentMsg, (HWND)NULL, 0, 0, PM_NOREMOVE) != 0);
 669 } // end of wxApp::Pending
 670
 671 void wxApp::Dispatch()
 672 {
 673     DoMessage();
 674 }
 675
 676 //////////////////////////////////////////////////////////////////////////////
 677 //
 678 // Give all windows a chance to preprocess
 679 // the message. Some may have accelerator tables, or have
 680 // MDI complications.
 681 //
 682 //////////////////////////////////////////////////////////////////////////////
 683 bool wxApp::ProcessMessage(
 684   WXMSG*                            pWxmsg
 685 )
 686 {
 687     QMSG*                           pMsg = (PQMSG)pWxmsg;
 688     HWND                            hWnd = pMsg->hwnd;
 689     wxWindow*                       pWndThis = wxFindWinFromHandle((WXHWND)hWnd);
 690     wxWindow*                       pWnd;
 691
 692     //
 693     // Pass non-system timer messages to the wxTimerProc
 694     //
 695     if (pMsg->msg == WM_TIMER &&
 696         (SHORT1FROMMP(pMsg->mp1) != TID_CURSOR &&
 697          SHORT1FROMMP(pMsg->mp1) != TID_FLASHWINDOW &&
 698          SHORT1FROMMP(pMsg->mp1) != TID_SCROLL &&
 699          SHORT1FROMMP(pMsg->mp1) != 0x0000
 700         ))
 701         wxTimerProc(NULL, 0, (int)pMsg->mp1, 0);
 702
 703     //
 704     // Allow the window to prevent certain messages from being
 705     // translated/processed (this is currently used by wxTextCtrl to always
 706     // grab Ctrl-C/V/X, even if they are also accelerators in some parent)
 707     //
 708     if (pWndThis && !pWndThis->OS2ShouldPreProcessMessage(pWxmsg))
 709     {
 710         return FALSE;
 711     }
 712
 713     //
 714     // For some composite controls (like a combobox), wndThis might be NULL
 715     // because the subcontrol is not a wxWindow, but only the control itself
 716     // is - try to catch this case
 717     //
 718     while (hWnd && !pWndThis)
 719     {
 720         hWnd = ::WinQueryWindow(hWnd, QW_PARENT);
 721         pWndThis = wxFindWinFromHandle((WXHWND)hWnd);
 722     }
 723
 724     //
 725     // Try translations first; find the youngest window with
 726     // a translation table. OS/2 has case sensative accels, so
 727     // this block, coded by BK, removes that and helps make them
 728     // case insensative.
 729     //
 730     if(pMsg->msg == WM_CHAR)
 731     {
 732        PBYTE                        pChmsg = (PBYTE)&(pMsg->msg);
 733        USHORT                       uSch  = CHARMSG(pChmsg)->chr;
 734        bool                         bRc;
 735
 736        //
 737        // Do not process keyup events
 738        //
 739        if(!(CHARMSG(pChmsg)->fs & KC_KEYUP))
 740        {
 741            if((CHARMSG(pChmsg)->fs & (KC_ALT | KC_CTRL)) && CHARMSG(pChmsg)->chr != 0)
 742                 CHARMSG(pChmsg)->chr = (USHORT)wxToupper((UCHAR)uSch);
 743
 744
 745            for(pWnd = pWndThis; pWnd; pWnd = pWnd->GetParent() )
 746            {
 747                if((bRc = pWnd->OS2TranslateMessage(pWxmsg)) == TRUE)
 748                    break;
 749            }
 750
 751             if(!bRc)    // untranslated, should restore original value
 752                 CHARMSG(pChmsg)->chr = uSch;
 753         }
 754     }
 755     //
 756     // Anyone for a non-translation message? Try youngest descendants first.
 757     //
 758 //  for (pWnd = pWndThis; pWnd; pWnd = pWnd->GetParent())
 759 //  {
 760 //      if (pWnd->OS2ProcessMessage(pWxmsg))
 761 //          return TRUE;
 762 //  }
 763     return FALSE;
 764 } // end of wxApp::ProcessMessage
 765
 766 bool                                gbInOnIdle = FALSE;
 767
 768 void wxApp::OnIdle(
 769   wxIdleEvent&                      rEvent
 770 )
 771 {
 772
 773     //
 774     // Avoid recursion (via ProcessEvent default case)
 775     //
 776     if (gbInOnIdle)
 777         return;
 778
 779     gbInOnIdle = TRUE;
 780
 781     wxAppBase::OnIdle(event);
 782
 783 #if wxUSE_DC_CACHEING
 784     // automated DC cache management: clear the cached DCs and bitmap
 785     // if it's likely that the app has finished with them, that is, we
 786     // get an idle event and we're not dragging anything.
 787     if (!::WinGetKeyState(HWND_DESKTOP, VK_BUTTON1) &&
 788         !::WinGetKeyState(HWND_DESKTOP, VK_BUTTON3) &&
 789         !::WinGetKeyState(HWND_DESKTOP, VK_BUTTON2))
 790         wxDC::ClearCache();
 791 #endif // wxUSE_DC_CACHEING
 792
 793     gbInOnIdle = FALSE;
 794 } // end of wxApp::OnIdle
 795
 796 void wxApp::OnEndSession(
 797   wxCloseEvent&                     WXUNUSED(rEvent))
 798 {
 799     if (GetTopWindow())
 800         GetTopWindow()->Close(TRUE);
 801 } // end of wxApp::OnEndSession
 802
 803 //
 804 // Default behaviour: close the application with prompts. The
 805 // user can veto the close, and therefore the end session.
 806 //
 807 void wxApp::OnQueryEndSession(
 808   wxCloseEvent&                     rEvent
 809 )
 810 {
 811     if (GetTopWindow())
 812     {
 813         if (!GetTopWindow()->Close(!rEvent.CanVeto()))
 814             rEvent.Veto(TRUE);
 815     }
 816 } // end of wxApp::OnQueryEndSession
 817
 818 void wxApp::Exit()
 819 {
 820     wxApp::CleanUp();
 821
 822     // VZ: must really exit somehow, insert appropriate OS/2 syscall (FIXME)
 823     wxAppConsole::Exit();
 824 } // end of wxExit
 825
 826 //
 827 // Yield to incoming messages
 828 //
 829 bool wxApp::Yield(bool onlyIfNeeded)
 830 {
 831     static bool s_inYield = FALSE;
 832
 833     if ( s_inYield )
 834     {
 835         if ( !onlyIfNeeded )
 836         {
 837             wxFAIL_MSG( _T("wxYield() called recursively") );
 838         }
 839
 840         return FALSE;
 841     }
 842
 843     HAB                             vHab = 0;
 844     QMSG                            vMsg;
 845
 846     //
 847     // Disable log flushing from here because a call to wxYield() shouldn't
 848     // normally result in message boxes popping up &c
 849     //
 850     wxLog::Suspend();
 851
 852     s_inYield = TRUE;
 853
 854     //
 855     // We want to go back to the main message loop
 856     // if we see a WM_QUIT. (?)
 857     //
 858     while (::WinPeekMsg(vHab, &vMsg, (HWND)NULL, 0, 0, PM_NOREMOVE) && vMsg.msg != WM_QUIT)
 859     {
 860 #if wxUSE_THREADS
 861         wxMutexGuiLeaveOrEnter();
 862 #endif // wxUSE_THREADS
 863         if (!wxTheApp->DoMessage())
 864             break;
 865     }
 866     //
 867     // If they are pending events, we must process them.
 868     //
 869     if (wxTheApp)
 870         wxTheApp->ProcessPendingEvents();
 871
 872     //
 873     // Let the logs be flashed again
 874     //
 875     wxLog::Resume();
 876     s_inYield = FALSE;
 877     return TRUE;
 878 } // end of wxYield
 879
 880 int wxApp::AddSocketHandler(int handle, int mask,
 881                             void (*callback)(void*), void * gsock)
 882 {
 883     int find;
 884     struct GsocketCallbackInfo
 885         *CallbackInfo = (struct GsocketCallbackInfo *)m_sockCallbackInfo;
 886
 887     for (find = 0; find < m_maxSocketHandles; find++)
 888         if (CallbackInfo[find].handle == -1)
 889             break;
 890     if (find == m_maxSocketHandles)
 891     {
 892         // Allocate new memory
 893         m_sockCallbackInfo = realloc(m_sockCallbackInfo,
 894                                      (m_maxSocketHandles+=10)*
 895                                      sizeof(struct GsocketCallbackInfo));
 896         CallbackInfo = (struct GsocketCallbackInfo *)m_sockCallbackInfo;
 897         for (find = m_maxSocketHandles - 10; find < m_maxSocketHandles; find++)
 898             CallbackInfo[find].handle = -1;
 899         find = m_maxSocketHandles - 10;
 900     }
 901     CallbackInfo[find].proc = callback;
 902     CallbackInfo[find].type = mask;
 903     CallbackInfo[find].handle = handle;
 904     CallbackInfo[find].gsock = gsock;
 905     if (mask & wxSockReadMask)
 906         FD_SET(handle, &m_readfds);
 907     if (mask & wxSockWriteMask)
 908         FD_SET(handle, &m_writefds);
 909     if (handle >= m_maxSocketNr)
 910         m_maxSocketNr = handle + 1;
 911     return find;
 912 }
 913
 914 void wxApp::RemoveSocketHandler(int handle)
 915 {
 916     struct GsocketCallbackInfo
 917         *CallbackInfo = (struct GsocketCallbackInfo *)m_sockCallbackInfo;
 918     if (handle < m_maxSocketHandles)
 919     {
 920         if (CallbackInfo[handle].type & wxSockReadMask)
 921             FD_CLR(CallbackInfo[handle].handle, &m_readfds);
 922         if (CallbackInfo[handle].type & wxSockWriteMask)
 923             FD_CLR(CallbackInfo[handle].handle, &m_writefds);
 924         CallbackInfo[handle].handle = -1;
 925     }
 926 }
 927
 928 //-----------------------------------------------------------------------------
 929 // wxWakeUpIdle
 930 //-----------------------------------------------------------------------------
 931
 932 void wxApp::WakeUpIdle()
 933 {
 934     //
 935     // Send the top window a dummy message so idle handler processing will
 936     // start up again.  Doing it this way ensures that the idle handler
 937     // wakes up in the right thread (see also wxWakeUpMainThread() which does
 938     // the same for the main app thread only)
 939     //
 940     wxWindow*                       pTopWindow = wxTheApp->GetTopWindow();
 941
 942     if (pTopWindow)
 943     {
 944         if ( !::WinPostMsg(GetHwndOf(pTopWindow), WM_NULL, (MPARAM)0, (MPARAM)0))
 945         {
 946             //
 947             // Should never happen
 948             //
 949             wxLogLastError("PostMessage(WM_NULL)");
 950         }
 951     }
 952 } // end of wxWakeUpIdle
 953
 954 HAB wxGetInstance()
 955 {
 956     return vHabmain;
 957 }
 958
 959 void wxSetInstance(
 960   HAB                               vHab
 961 )
 962 {
 963     vHabmain = vHab;
 964 }
 965