]> git.saurik.com Git - wxWidgets.git/blobdiff - src/os2/app.cpp
no significant changes
[wxWidgets.git] / src / os2 / app.cpp
index f03a8e20ed81d7216deff886e615adb23ace451f..f48fa2d453b4f459ba7543495927d80dee385483 100644 (file)
@@ -27,8 +27,9 @@
     #include "wx/msgdlg.h"
     #include "wx/intl.h"
     #include "wx/dynarray.h"
-#   include "wx/wxchar.h"
-#   include "wx/icon.h"
+    #include "wx/wxchar.h"
+    #include "wx/icon.h"
+    #include "wx/timer.h"
 #endif
 
 #include "wx/log.h"
 
 #include "wx/os2/private.h"
 
+#ifdef __EMX__
+
+#include <sys/ioctl.h>
+#include <sys/select.h>
+
+#else
+
+#include <nerrno.h>
+#include <sys/ioctl.h>
+#include <sys/select.h>
+#include <sys/time.h>
+
+#endif //
+
+#ifndef __EMX__
+
+#define select(a,b,c,d,e) bsdselect(a,b,c,d,e)
+extern "C" int _System bsdselect(int,
+                                 struct fd_set *,
+                                 struct fd_set *,
+                                 struct fd_set *,
+                                 struct timeval *);
+#endif
+
 #if wxUSE_THREADS
     #include "wx/thread.h"
 
@@ -71,16 +96,6 @@ HAB                                 vHabmain = NULLHANDLE;
 QMSG                                svCurrentMsg;
 wxApp*                              wxTheApp = NULL;
 
-// NB: all "NoRedraw" classes must have the same names as the "normal" classes
-//     with NR suffix - wxWindow::OS2Create() supposes this
-wxChar wxFrameClassName[]                 = wxT("wxFrameClass");
-wxChar wxFrameClassNameNoRedraw[]         = wxT("wxFrameClassNR");
-wxChar wxMDIFrameClassName[]              = wxT("wxMDIFrameClass");
-wxChar wxMDIFrameClassNameNoRedraw[]      = wxT("wxMDIFrameClassNR");
-wxChar wxMDIChildFrameClassName[]         = wxT("wxMDIChildFrameClass");
-wxChar wxMDIChildFrameClassNameNoRedraw[] = wxT("wxMDIChildFrameClassNR");
-wxChar wxPanelClassName[]                 = wxT("wxPanelClass");
-wxChar wxCanvasClassName[]                = wxT("wxCanvasClass");
 
 HICON wxSTD_FRAME_ICON          = (HICON) NULL;
 HICON wxSTD_MDICHILDFRAME_ICON  = (HICON) NULL;
@@ -92,10 +107,111 @@ HICON wxDEFAULT_MDIPARENTFRAME_ICON  = (HICON) NULL;
 
 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 
+MRESULT EXPENTRY wxWndProc( HWND hWnd,ULONG message,MPARAM mp1,MPARAM mp2);
+MRESULT EXPENTRY wxFrameWndProc( HWND hWnd,ULONG message,MPARAM mp1,MPARAM mp2);
+
 // ===========================================================================
 // implementation
 // ===========================================================================
 
+// ---------------------------------------------------------------------------
+// helper struct and functions for socket handling
+// ---------------------------------------------------------------------------
+
+struct GsocketCallbackInfo{
+    void (*proc)(void *);
+    int type;
+    int handle;
+    void* gsock;
+};
+
+// These defines and wrapper functions are used here and in gsockpm.c
+#define wxSockReadMask  0x01
+#define wxSockWriteMask 0x02
+
+#ifdef __EMX__
+extern "C"
+int wxAppAddSocketHandler(int handle, int mask,
+                           void (*callback)(void*), void * gsock)
+{
+    return wxTheApp->AddSocketHandler(handle, mask, callback, gsock);
+}
+extern "C"
+void wxAppRemoveSocketHandler(int handle)
+{
+    wxTheApp->RemoveSocketHandler(handle);
+}
+#else
+//  Linkage mode problems using callbacks with extern C in a .cpp module
+int wxAppAddSocketHandler(int handle, int mask,
+                           void (*callback)(void*), void * gsock)
+{
+    return wxTheApp->AddSocketHandler(handle, mask, callback, gsock);
+}
+void wxAppRemoveSocketHandler(int handle)
+{
+    wxTheApp->RemoveSocketHandler(handle);
+}
+#endif
+
+void wxApp::HandleSockets()
+{
+    bool pendingEvent = FALSE;
+
+    // Check whether it's time for Gsocket operation
+    if (m_maxSocketHandles > 0 && m_maxSocketNr > 0)
+    {
+        fd_set readfds = m_readfds;
+        fd_set writefds = m_writefds;
+        struct timeval timeout;
+        int i;
+        struct GsocketCallbackInfo
+          *CallbackInfo = (struct GsocketCallbackInfo *)m_sockCallbackInfo;
+        int r = 0;
+        timeout.tv_sec = 0;
+        timeout.tv_usec = 0;
+        if ( select(m_maxSocketNr, &readfds, &writefds, 0, &timeout) > 0)
+        {
+            for (i = m_lastUsedHandle + 1; i != m_lastUsedHandle; i++)
+            {
+                if (i == m_maxSocketNr)
+                    i = 0;
+                if (FD_ISSET(i, &readfds))
+                {
+                    int r;
+                    for (r = 0; r < m_maxSocketHandles; r++){
+                        if(CallbackInfo[r].handle == i &&
+                           CallbackInfo[r].type == wxSockReadMask)
+                            break;
+                    }
+                    if (r < m_maxSocketHandles)
+                    {
+                        CallbackInfo[r].proc(CallbackInfo[r].gsock);
+                        pendingEvent = TRUE;
+                        wxYield();
+                    }
+                }
+                if (FD_ISSET(i, &writefds))
+                {
+                    int r;
+                    for (r = 0; r < m_maxSocketHandles; r++)
+                        if(CallbackInfo[r].handle == i &&
+                           CallbackInfo[r].type == wxSockWriteMask)
+                            break;
+                    if (r < m_maxSocketHandles)
+                    {
+                        CallbackInfo[r].proc(CallbackInfo[r].gsock);
+                        pendingEvent = TRUE;
+                        wxYield();
+                    }
+                }
+            }
+            m_lastUsedHandle = i;
+        }
+        if (pendingEvent)
+            wxYield();
+    }
+}
 // ---------------------------------------------------------------------------
 // wxApp
 // ---------------------------------------------------------------------------
@@ -115,20 +231,26 @@ bool wxApp::Initialize(
   HAB                               vHab
 )
 {
-    //
-    // OS2 has to have an anchorblock
-    //
-    vHab = WinInitialize(0);
-
-    if (!vHab)
-        return FALSE;
-    else
-        vHabmain = vHab;
-
-    // Some people may wish to use this, but
-    // probably it shouldn't be here by default.
-#ifdef __WXDEBUG__
-    //    wxRedirectIOToConsole();
+#if defined(wxUSE_CONSOLEDEBUG)
+  #if wxUSE_CONSOLEDEBUG
+/***********************************************/
+/* Code for using stdout debug                 */
+/* To use it you mast link app as "Window" - EK*/
+/***********************************************/
+  {
+     PPIB pib;
+     PTIB tib;
+
+    printf("In console\n");
+
+  DosGetInfoBlocks(&tib, &pib);
+/* Try morphing into a PM application. */
+//  if(pib->pib_ultype == 2)    /* VIO */
+    pib->pib_ultype = 3;
+   }
+/**********************************************/
+/**********************************************/
+  #endif //wxUSE_CONSOLEDEBUG
 #endif
 
     wxBuffer = new wxChar[1500]; // FIXME; why?
@@ -151,7 +273,22 @@ bool wxApp::Initialize(
 
     wxBitmap::InitStandardHandlers();
 
-    RegisterWindowClasses(vHab);
+    //
+    // OS2 has to have an anchorblock
+    //
+    vHab = WinInitialize(0);
+
+    if (!vHab)
+        return FALSE;
+    else
+        vHabmain = vHab;
+
+    // Some people may wish to use this, but
+    // probably it shouldn't be here by default.
+#ifdef __WXDEBUG__
+    //    wxRedirectIOToConsole();
+#endif
+
     wxWinHandleList = new wxList(wxKEY_INTEGER);
 
     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
@@ -166,9 +303,11 @@ bool wxApp::Initialize(
     wxModule::RegisterModules();
     if (!wxModule::InitializeModules())
         return FALSE;
+    RegisterWindowClasses(vHab);
     return TRUE;
 } // end of wxApp::Initialize
 
+const char*                         CANTREGISTERCLASS = " Can't register Class ";
 // ---------------------------------------------------------------------------
 // RegisterWindowClasses
 // ---------------------------------------------------------------------------
@@ -177,14 +316,13 @@ bool wxApp::RegisterWindowClasses(
   HAB                               vHab
 )
 {
-    APIRET                          rc;
     ERRORID                         vError = 0L;
     wxString                        sError;
 
     if (!::WinRegisterClass( vHab
                             ,wxFrameClassName
-                            ,(PFNWP)wxWndProc
-                            ,CS_SIZEREDRAW | CS_MOVENOTIFY | CS_SYNCPAINT
+                            ,wxFrameWndProc
+                            ,CS_SIZEREDRAW | CS_SYNCPAINT
                             ,sizeof(ULONG)
                            ))
     {
@@ -196,9 +334,9 @@ bool wxApp::RegisterWindowClasses(
 
     if (!::WinRegisterClass( vHab
                             ,wxFrameClassNameNoRedraw
-                            ,(PFNWP)wxWndProc
-                            ,0
+                            ,wxWndProc
                             ,0
+                            ,sizeof(ULONG)
                            ))
     {
         vError = ::WinGetLastError(vHab);
@@ -209,9 +347,9 @@ bool wxApp::RegisterWindowClasses(
 
     if (!::WinRegisterClass( vHab
                             ,wxMDIFrameClassName
-                            ,(PFNWP)wxWndProc
+                            ,wxWndProc
                             ,CS_SIZEREDRAW | CS_MOVENOTIFY | CS_SYNCPAINT
-                            ,0
+                            ,sizeof(ULONG)
                            ))
     {
         vError = ::WinGetLastError(vHab);
@@ -222,9 +360,9 @@ bool wxApp::RegisterWindowClasses(
 
     if (!::WinRegisterClass( vHab
                             ,wxMDIFrameClassNameNoRedraw
-                            ,(PFNWP)wxWndProc
-                            ,0
+                            ,wxWndProc
                             ,0
+                            ,sizeof(ULONG)
                            ))
     {
         vError = ::WinGetLastError(vHab);
@@ -235,9 +373,9 @@ bool wxApp::RegisterWindowClasses(
 
     if (!::WinRegisterClass( vHab
                             ,wxMDIChildFrameClassName
-                            ,(PFNWP)wxWndProc
+                            ,wxWndProc
                             ,CS_MOVENOTIFY | CS_SIZEREDRAW | CS_SYNCPAINT | CS_HITTEST
-                            ,0
+                            ,sizeof(ULONG)
                            ))
     {
         vError = ::WinGetLastError(vHab);
@@ -248,9 +386,9 @@ bool wxApp::RegisterWindowClasses(
 
     if (!::WinRegisterClass( vHab
                             ,wxMDIChildFrameClassNameNoRedraw
-                            ,(PFNWP)wxWndProc
+                            ,wxWndProc
                             ,CS_HITTEST
-                            ,0
+                            ,sizeof(ULONG)
                            ))
     {
         vError = ::WinGetLastError(vHab);
@@ -261,9 +399,9 @@ bool wxApp::RegisterWindowClasses(
 
     if (!::WinRegisterClass( vHab
                             ,wxPanelClassName
-                            ,(PFNWP)wxWndProc
+                            ,wxWndProc
                             ,CS_MOVENOTIFY | CS_SIZEREDRAW | CS_HITTEST | CS_SAVEBITS | CS_SYNCPAINT
-                            ,0
+                            ,sizeof(ULONG)
                            ))
     {
         vError = ::WinGetLastError(vHab);
@@ -274,9 +412,9 @@ bool wxApp::RegisterWindowClasses(
 
     if (!::WinRegisterClass( vHab
                             ,wxCanvasClassName
-                            ,(PFNWP)wxWndProc
-                            ,CS_MOVENOTIFY | CS_SIZEREDRAW | CS_HITTEST | CS_SAVEBITS | CS_SYNCPAINT
-                            ,0
+                            ,wxWndProc
+                            ,CS_SIZEREDRAW | CS_HITTEST | CS_SYNCPAINT
+                            ,sizeof(ULONG)
                            ))
     {
         vError = ::WinGetLastError(vHab);
@@ -402,6 +540,9 @@ void wxApp::CleanUp()
 #endif // wxUSE_LOG
 } // end of wxApp::CleanUp
 
+//----------------------------------------------------------------------
+// Main wxWindows entry point
+//----------------------------------------------------------------------
 int wxEntry(
   int                               argc
 , char*                             argv[]
@@ -457,29 +598,43 @@ int wxEntry(
         if (wxTheApp->OnInit())
         {
             nRetValue = wxTheApp->OnRun();
-//          nRetValue = -1;
         }
-    }
-
-    wxWindow*                       pTopWindow = wxTheApp->GetTopWindow();
-
-    if (pTopWindow)
-    {
-        // Forcibly delete the window.
-        if (pTopWindow->IsKindOf(CLASSINFO(wxFrame)) ||
-            pTopWindow->IsKindOf(CLASSINFO(wxDialog)) )
+        // Normal exit
+        wxWindow*                   pTopWindow = wxTheApp->GetTopWindow();
+        if (pTopWindow)
         {
-            pTopWindow->Close(TRUE);
-            wxTheApp->DeletePendingObjects();
-        }
-        else
-        {
-            delete pTopWindow;
-            wxTheApp->SetTopWindow(NULL);
+            // Forcibly delete the window.
+            if (pTopWindow->IsKindOf(CLASSINFO(wxFrame)) ||
+                pTopWindow->IsKindOf(CLASSINFO(wxDialog)) )
+            {
+                pTopWindow->Close(TRUE);
+                wxTheApp->DeletePendingObjects();
+            }
+            else
+            {
+                delete pTopWindow;
+                wxTheApp->SetTopWindow(NULL);
+            }
         }
     }
+    else // app initialization failed
+    {
+        wxLogLastError(" Gui initialization failed, exitting");
+    }
+#if wxUSE_CONSOLEDEBUG
+    printf("wxTheApp->OnExit ");
+    fflush(stdout);
+#endif
     wxTheApp->OnExit();
+#if wxUSE_CONSOLEDEBUG
+    printf("wxApp::CleanUp ");
+    fflush(stdout);
+#endif
     wxApp::CleanUp();
+#if wxUSE_CONSOLEDEBUG
+    printf("return %i ", nRetValue);
+    fflush(stdout);
+#endif
     return(nRetValue);
 } // end of wxEntry
 
@@ -488,6 +643,9 @@ bool wxApp::OnInitGui()
     ERRORID                         vError;
     wxString                        sError;
 
+    if (!wxAppBase::OnInitGui())
+        return FALSE;
+
     m_hMq = ::WinCreateMsgQueue(vHabmain, 0);
     if (!m_hMq)
     {
@@ -496,6 +654,7 @@ bool wxApp::OnInitGui()
         wxLogDebug(sError);
         return FALSE;
     }
+
     return TRUE;
 } // end of wxApp::OnInitGui
 
@@ -508,7 +667,6 @@ wxApp::wxApp()
 {
     m_topWindow = NULL;
     wxTheApp = this;
-    m_wantDebugOutput = TRUE;
 
     argc = 0;
     argv = NULL;
@@ -516,6 +674,9 @@ wxApp::wxApp()
     m_exitOnFrameDelete = TRUE;
     m_bAuto3D = TRUE;
     m_hMq = 0;
+    m_maxSocketHandles = 0;
+    m_maxSocketNr = 0;
+    m_sockCallbackInfo = 0;
 } // end of wxApp::wxApp
 
 wxApp::~wxApp()
@@ -546,11 +707,11 @@ bool wxApp::Initialized()
 // Get and process a message, returning FALSE if WM_QUIT
 // received (and also set the flag telling the app to exit the main loop)
 //
+
 bool wxApp::DoMessage()
 {
     BOOL                            bRc = ::WinGetMsg(vHabmain, &svCurrentMsg, HWND(NULL), 0, 0);
 
-//    wxUsleep(1000);
     if (bRc == 0)
     {
         // got WM_QUIT
@@ -618,15 +779,24 @@ bool wxApp::DoMessage()
         }
 #endif // wxUSE_THREADS
 
+        //
         // Process the message
-        if (!ProcessMessage((WXMSG *)&svCurrentMsg))
-        {
-            ::WinDispatchMsg(vHabmain, (PQMSG)&svCurrentMsg);
-        }
+        //
+        DoMessage((WXMSG *)&svCurrentMsg);
     }
     return TRUE;
 } // end of wxApp::DoMessage
 
+void wxApp::DoMessage(
+  WXMSG*                            pMsg
+)
+{
+    if (!ProcessMessage((WXMSG *)&svCurrentMsg))
+    {
+        ::WinDispatchMsg(vHabmain, (PQMSG)&svCurrentMsg);
+    }
+} // end of wxApp::DoMessage
+
 //////////////////////////////////////////////////////////////////////////////
 //
 // Keep trying to process messages until WM_QUIT
@@ -653,9 +823,15 @@ int wxApp::MainLoop()
 #endif // wxUSE_THREADS
         while (!Pending() && ProcessIdle())
         {
-//            wxUsleep(10000);
+            HandleSockets();
+            wxUsleep(10000);
         }
-        DoMessage();
+        HandleSockets();
+        if (Pending())
+            DoMessage();
+        else
+            wxUsleep(10000);
+
     }
     return (int)svCurrentMsg.mp1;
 } // end of wxApp::MainLoop
@@ -718,6 +894,27 @@ bool wxApp::ProcessMessage(
     }
 #endif // wxUSE_TOOLTIPS
 
+    //
+    // Pass non-system timer messages to the wxTimerProc
+    //
+    if (pMsg->msg == WM_TIMER &&
+        (SHORT1FROMMP(pMsg->mp1) != TID_CURSOR &&
+         SHORT1FROMMP(pMsg->mp1) != TID_FLASHWINDOW &&
+         SHORT1FROMMP(pMsg->mp1) != TID_SCROLL &&
+         SHORT1FROMMP(pMsg->mp1) != 0x0000
+        ))
+        wxTimerProc(NULL, 0, (int)pMsg->mp1, 0);
+
+    //
+    // Allow the window to prevent certain messages from being
+    // translated/processed (this is currently used by wxTextCtrl to always
+    // grab Ctrl-C/V/X, even if they are also accelerators in some parent)
+    //
+    if (pWndThis && !pWndThis->OS2ShouldPreProcessMessage(pWxmsg))
+    {
+        return FALSE;
+    }
+
     //
     // For some composite controls (like a combobox), wndThis might be NULL
     // because the subcontrol is not a wxWindow, but only the control itself
@@ -747,13 +944,15 @@ bool wxApp::ProcessMessage(
        if(!(CHARMSG(pChmsg)->fs & KC_KEYUP))
        {
            if((CHARMSG(pChmsg)->fs & (KC_ALT | KC_CTRL)) && CHARMSG(pChmsg)->chr != 0)
-                CHARMSG(pChmsg)->chr = (USHORT)wxToupper((UCHAR)usch);
+                CHARMSG(pChmsg)->chr = (USHORT)wxToupper((UCHAR)uSch);
+
+
+           for(pWnd = pWndThis; pWnd; pWnd = pWnd->GetParent() )
+           {
+               if((bRc = pWnd->OS2TranslateMessage(pWxmsg)) == TRUE)
+                   break;
+           }
 
-            for(pWnd = pWndThis; pWnd; pWnd = pWnd->GetParent() )
-            {
-                if(pWnd->OS2TranslateMessage(pWxmsg))
-                    break;
-            }
             if(!bRc)    // untranslated, should restore original value
                 CHARMSG(pChmsg)->chr = uSch;
         }
@@ -761,11 +960,11 @@ bool wxApp::ProcessMessage(
     //
     // Anyone for a non-translation message? Try youngest descendants first.
     //
-    for (pWnd = pWndThis; pWnd; pWnd = pWnd->GetParent())
-    {
-        if (pWnd->OS2ProcessMessage(pWxmsg))
-            return TRUE;
-    }
+//  for (pWnd = pWndThis; pWnd; pWnd = pWnd->GetParent())
+//  {
+//      if (pWnd->OS2ProcessMessage(pWxmsg))
+//          return TRUE;
+//  }
     return FALSE;
 } // end of wxApp::ProcessMessage
 
@@ -778,7 +977,7 @@ void wxApp::OnIdle(
     //
     // Avoid recursion (via ProcessEvent default case)
     //
-    if (sbInOnIdle )
+    if (sbInOnIdle)
         return;
 
     sbInOnIdle = TRUE;
@@ -802,6 +1001,16 @@ void wxApp::OnIdle(
     wxLog::FlushActive();
 #endif // wxUSE_LOG
 
+#if wxUSE_DC_CACHEING
+    // automated DC cache management: clear the cached DCs and bitmap
+    // if it's likely that the app has finished with them, that is, we
+    // get an idle event and we're not dragging anything.
+    if (!::WinGetKeyState(HWND_DESKTOP, VK_BUTTON1) &&
+        !::WinGetKeyState(HWND_DESKTOP, VK_BUTTON3) &&
+        !::WinGetKeyState(HWND_DESKTOP, VK_BUTTON2))
+        wxDC::ClearCache();
+#endif // wxUSE_DC_CACHEING
+
     //
     // Send OnIdle events to all windows
     //
@@ -915,8 +1124,20 @@ void wxExit()
 //
 // Yield to incoming messages
 //
-bool wxYield()
+bool wxApp::Yield(bool onlyIfNeeded)
 {
+    static bool s_inYield = FALSE;
+
+    if ( s_inYield )
+    {
+        if ( !onlyIfNeeded )
+        {
+            wxFAIL_MSG( _T("wxYield() called recursively") );
+        }
+
+        return FALSE;
+    }
+
     HAB                             vHab = 0;
     QMSG                            vMsg;
 
@@ -926,6 +1147,8 @@ bool wxYield()
     //
     wxLog::Suspend();
 
+    s_inYield = TRUE;
+
     //
     // We want to go back to the main message loop
     // if we see a WM_QUIT. (?)
@@ -948,33 +1171,57 @@ bool wxYield()
     // Let the logs be flashed again
     //
     wxLog::Resume();
+    s_inYield = FALSE;
     return TRUE;
 } // end of wxYield
 
-wxIcon wxApp::GetStdIcon(
-  int                               nWhich
-) const
+int wxApp::AddSocketHandler(int handle, int mask,
+                            void (*callback)(void*), void * gsock)
 {
-    switch(nWhich)
-    {
-        case wxICON_INFORMATION:
-            return wxIcon("wxICON_INFO");
-
-        case wxICON_QUESTION:
-            return wxIcon("wxICON_QUESTION");
-
-        case wxICON_EXCLAMATION:
-            return wxIcon("wxICON_WARNING");
+    int find;
+    struct GsocketCallbackInfo
+        *CallbackInfo = (struct GsocketCallbackInfo *)m_sockCallbackInfo;
 
-        default:
-            wxFAIL_MSG(wxT("requested non existent standard icon"));
-            // still fall through
+    for (find = 0; find < m_maxSocketHandles; find++)
+        if (CallbackInfo[find].handle == -1)
+            break;
+    if (find == m_maxSocketHandles)
+    {
+        // Allocate new memory
+        m_sockCallbackInfo = realloc(m_sockCallbackInfo,
+                                     (m_maxSocketHandles+=10)*
+                                     sizeof(struct GsocketCallbackInfo));
+        CallbackInfo = (struct GsocketCallbackInfo *)m_sockCallbackInfo;
+        for (find = m_maxSocketHandles - 10; find < m_maxSocketHandles; find++)
+            CallbackInfo[find].handle = -1;
+        find = m_maxSocketHandles - 10;
+    }
+    CallbackInfo[find].proc = callback;
+    CallbackInfo[find].type = mask;
+    CallbackInfo[find].handle = handle;
+    CallbackInfo[find].gsock = gsock;
+    if (mask & wxSockReadMask)
+        FD_SET(handle, &m_readfds);
+    if (mask & wxSockWriteMask)
+        FD_SET(handle, &m_writefds);
+    if (handle >= m_maxSocketNr)
+        m_maxSocketNr = handle + 1;
+    return find;
+}
 
-        case wxICON_HAND:
-            return wxIcon("wxICON_ERROR");
+void wxApp::RemoveSocketHandler(int handle)
+{
+    struct GsocketCallbackInfo
+        *CallbackInfo = (struct GsocketCallbackInfo *)m_sockCallbackInfo;
+    if (handle < m_maxSocketHandles)
+    {
+        if (CallbackInfo[handle].type & wxSockReadMask)
+            FD_CLR(CallbackInfo[handle].handle, &m_readfds);
+        if (CallbackInfo[handle].type & wxSockWriteMask)
+            FD_CLR(CallbackInfo[handle].handle, &m_writefds);
+        CallbackInfo[handle].handle = -1;
     }
-    return wxIcon("wxICON_ERROR");
-} // end of wxApp::GetStdIcon
+}
 
 //-----------------------------------------------------------------------------
 // wxWakeUpIdle