static int winProcessXEventsTimeout(HWND hwnd, int iWindow, Display * pDisplay, Bool fUseUnicode, int iTimeoutSec) { int iConnNumber; struct timeval tv; int iReturn; DWORD dwStopTime = (GetTickCount() / 1000) + iTimeoutSec; /* We need to ensure that all pending events are processed */ XSync(pDisplay, FALSE); /* Get our connection number */ iConnNumber = ConnectionNumber(pDisplay); /* Loop for X events */ while (1) { fd_set fdsRead; /* Setup the file descriptor set */ FD_ZERO(&fdsRead); FD_SET(iConnNumber, &fdsRead); /* Adjust timeout */ tv.tv_sec = dwStopTime - (GetTickCount() / 1000); tv.tv_usec = 0; /* Break out if no time left */ if (tv.tv_sec < 0) return WIN_XEVENTS_SUCCESS; /* Wait for an X event */ iReturn = select(iConnNumber + 1, /* Highest fds number */ &fdsRead, /* Read mask */ NULL, /* No write mask */ NULL, /* No exception mask */ &tv); /* No timeout */ if (iReturn < 0) { ErrorF("winProcessXEventsTimeout - Call to select () failed: %d. " "Bailing.\n", iReturn); break; } /* Branch on which descriptor became active */ if (FD_ISSET(iConnNumber, &fdsRead)) { /* Process X events */ /* Exit when we see that server is shutting down */ iReturn = winClipboardFlushXEvents(hwnd, iWindow, pDisplay, fUseUnicode); if (WIN_XEVENTS_NOTIFY == iReturn) { /* Bail out if notify processed */ return iReturn; } } } return WIN_XEVENTS_SUCCESS; }
void * winClipboardProc(void *pvNotUsed) { Atom atomClipboard, atomClipboardManager; int iReturn; HWND hwnd = NULL; int iConnectionNumber = 0; #ifdef HAS_DEVWINDOWS int fdMessageQueue = 0; #else struct timeval tvTimeout; #endif fd_set fdsRead; int iMaxDescriptor; Display *pDisplay = NULL; Window iWindow = None; int iRetries; Bool fUseUnicode; char szDisplay[512]; int iSelectError; winDebug("winClipboardProc - Hello\n"); ++clipboardRestarts; /* Do we use Unicode clipboard? */ fUseUnicode = g_fUnicodeClipboard; /* Save the Unicode support flag in a global */ g_fUseUnicode = fUseUnicode; /* Allow multiple threads to access Xlib */ if (XInitThreads() == 0) { ErrorF("winClipboardProc - XInitThreads failed.\n"); goto winClipboardProc_Exit; } /* See if X supports the current locale */ if (XSupportsLocale() == False) { ErrorF("winClipboardProc - Warning: Locale not supported by X.\n"); } /* Set error handler */ XSetErrorHandler(winClipboardErrorHandler); g_winClipboardProcThread = pthread_self(); g_winClipboardOldIOErrorHandler = XSetIOErrorHandler(winClipboardIOErrorHandler); /* Set jump point for Error exits */ iReturn = setjmp(g_jmpEntry); /* Check if we should continue operations */ if (iReturn != WIN_JMP_ERROR_IO && iReturn != WIN_JMP_OKAY) { /* setjmp returned an unknown value, exit */ ErrorF("winClipboardProc - setjmp returned: %d exiting\n", iReturn); goto winClipboardProc_Exit; } else if (iReturn == WIN_JMP_ERROR_IO) { /* TODO: Cleanup the Win32 window and free any allocated memory */ ErrorF("winClipboardProc - setjmp returned for IO Error Handler.\n"); pthread_exit(NULL); } /* Use our generated cookie for authentication */ winSetAuthorization(); /* Initialize retry count */ iRetries = 0; /* Setup the display connection string x */ /* * NOTE: Always connect to screen 0 since we require that screen * numbers start at 0 and increase without gaps. We only need * to connect to one screen on the display to get events * for all screens on the display. That is why there is only * one clipboard client thread. */ snprintf(szDisplay, 512, "127.0.0.1:%s.0", display); /* Print the display connection string */ ErrorF("winClipboardProc - DISPLAY=%s\n", szDisplay); /* Open the X display */ do { pDisplay = XOpenDisplay(szDisplay); if (pDisplay == NULL) { ErrorF("winClipboardProc - Could not open display, " "try: %d, sleeping: %d\n", iRetries + 1, WIN_CONNECT_DELAY); ++iRetries; sleep(WIN_CONNECT_DELAY); continue; } else break; } while (pDisplay == NULL && iRetries < WIN_CONNECT_RETRIES); /* Make sure that the display opened */ if (pDisplay == NULL) { ErrorF("winClipboardProc - Failed opening the display, giving up\n"); goto winClipboardProc_Done; } /* Save the display in the screen privates */ g_pClipboardDisplay = pDisplay; ErrorF("winClipboardProc - XOpenDisplay () returned and " "successfully opened the display.\n"); /* Get our connection number */ iConnectionNumber = ConnectionNumber(pDisplay); #ifdef HAS_DEVWINDOWS /* Open a file descriptor for the windows message queue */ fdMessageQueue = open(WIN_MSG_QUEUE_FNAME, O_RDONLY); if (fdMessageQueue == -1) { ErrorF("winClipboardProc - Failed opening %s\n", WIN_MSG_QUEUE_FNAME); goto winClipboardProc_Done; } /* Find max of our file descriptors */ iMaxDescriptor = max(fdMessageQueue, iConnectionNumber) + 1; #else iMaxDescriptor = iConnectionNumber + 1; #endif /* Create atoms */ atomClipboard = XInternAtom(pDisplay, "CLIPBOARD", False); atomClipboardManager = XInternAtom(pDisplay, "CLIPBOARD_MANAGER", False); /* Create a messaging window */ iWindow = XCreateSimpleWindow(pDisplay, DefaultRootWindow(pDisplay), 1, 1, 500, 500, 0, BlackPixel(pDisplay, 0), BlackPixel(pDisplay, 0)); if (iWindow == 0) { ErrorF("winClipboardProc - Could not create an X window.\n"); goto winClipboardProc_Done; } XStoreName(pDisplay, iWindow, "xwinclip"); /* Select event types to watch */ if (XSelectInput(pDisplay, iWindow, PropertyChangeMask) == BadWindow) ErrorF("winClipboardProc - XSelectInput generated BadWindow " "on messaging window\n"); /* Save the window in the screen privates */ g_iClipboardWindow = iWindow; /* Create Windows messaging window */ hwnd = winClipboardCreateMessagingWindow(); /* Save copy of HWND in screen privates */ g_hwndClipboard = hwnd; /* Assert ownership of selections if Win32 clipboard is owned */ if (NULL != GetClipboardOwner()) { /* PRIMARY */ iReturn = XSetSelectionOwner(pDisplay, XA_PRIMARY, iWindow, CurrentTime); if (iReturn == BadAtom || iReturn == BadWindow || XGetSelectionOwner(pDisplay, XA_PRIMARY) != iWindow) { ErrorF("winClipboardProc - Could not set PRIMARY owner\n"); goto winClipboardProc_Done; } /* CLIPBOARD */ iReturn = XSetSelectionOwner(pDisplay, atomClipboard, iWindow, CurrentTime); if (iReturn == BadAtom || iReturn == BadWindow || XGetSelectionOwner(pDisplay, atomClipboard) != iWindow) { ErrorF("winClipboardProc - Could not set CLIPBOARD owner\n"); goto winClipboardProc_Done; } } /* Pre-flush X events */ /* * NOTE: Apparently you'll freeze if you don't do this, * because there may be events in local data structures * already. */ winClipboardFlushXEvents(hwnd, iWindow, pDisplay, fUseUnicode); /* Pre-flush Windows messages */ if (!winClipboardFlushWindowsMessageQueue(hwnd)) return 0; /* Signal that the clipboard client has started */ g_fClipboardStarted = TRUE; /* Loop for X events */ while (1) { /* Setup the file descriptor set */ /* * NOTE: You have to do this before every call to select * because select modifies the mask to indicate * which descriptors are ready. */ FD_ZERO(&fdsRead); FD_SET(iConnectionNumber, &fdsRead); #ifdef HAS_DEVWINDOWS FD_SET(fdMessageQueue, &fdsRead); #else tvTimeout.tv_sec = 0; tvTimeout.tv_usec = 100; #endif /* Wait for a Windows event or an X event */ iReturn = select(iMaxDescriptor, /* Highest fds number */ &fdsRead, /* Read mask */ NULL, /* No write mask */ NULL, /* No exception mask */ #ifdef HAS_DEVWINDOWS NULL /* No timeout */ #else &tvTimeout /* Set timeout */ #endif ); #ifndef HAS_WINSOCK iSelectError = errno; #else iSelectError = WSAGetLastError(); #endif if (iReturn < 0) { #ifndef HAS_WINSOCK if (iSelectError == EINTR) #else if (iSelectError == WSAEINTR) #endif continue; ErrorF("winClipboardProc - Call to select () failed: %d. " "Bailing.\n", iReturn); break; } /* Branch on which descriptor became active */ if (FD_ISSET(iConnectionNumber, &fdsRead)) { /* Process X events */ /* Exit when we see that server is shutting down */ iReturn = winClipboardFlushXEvents(hwnd, iWindow, pDisplay, fUseUnicode); if (WIN_XEVENTS_SHUTDOWN == iReturn) { ErrorF("winClipboardProc - winClipboardFlushXEvents " "trapped shutdown event, exiting main loop.\n"); break; } } #ifdef HAS_DEVWINDOWS /* Check for Windows event ready */ if (FD_ISSET(fdMessageQueue, &fdsRead)) #else if (1) #endif { /* Process Windows messages */ if (!winClipboardFlushWindowsMessageQueue(hwnd)) { ErrorF("winClipboardProc - " "winClipboardFlushWindowsMessageQueue trapped " "WM_QUIT message, exiting main loop.\n"); break; } } } winClipboardProc_Exit: /* disable the clipboard, which means the thread will die */ g_fClipboard = FALSE; winClipboardProc_Done: /* Close our Windows window */ if (g_hwndClipboard) { /* Destroy the Window window (hwnd) */ winDebug("winClipboardProc - Destroy Windows window\n"); PostMessage(g_hwndClipboard, WM_DESTROY, 0, 0); winClipboardFlushWindowsMessageQueue(g_hwndClipboard); } /* Close our X window */ if (pDisplay && iWindow) { iReturn = XDestroyWindow(pDisplay, iWindow); if (iReturn == BadWindow) ErrorF("winClipboardProc - XDestroyWindow returned BadWindow.\n"); else ErrorF("winClipboardProc - XDestroyWindow succeeded.\n"); } #ifdef HAS_DEVWINDOWS /* Close our Win32 message handle */ if (fdMessageQueue) close(fdMessageQueue); #endif #if 0 /* * FIXME: XCloseDisplay hangs if we call it, as of 2004/03/26. The * XSync and XSelectInput calls did not help. */ /* Discard any remaining events */ XSync(pDisplay, TRUE); /* Select event types to watch */ XSelectInput(pDisplay, DefaultRootWindow(pDisplay), None); /* Close our X display */ if (pDisplay) { XCloseDisplay(pDisplay); } #endif /* global clipboard variable reset */ g_fClipboardLaunched = FALSE; g_fClipboardStarted = FALSE; g_iClipboardWindow = None; g_pClipboardDisplay = NULL; g_hwndClipboard = NULL; /* checking if we need to restart */ if (clipboardRestarts >= WIN_CLIPBOARD_RETRIES) { /* terminates clipboard thread but the main server still lives */ ErrorF ("winClipboardProc - the clipboard thread has restarted %d times and seems to be unstable, disabling clipboard integration\n", clipboardRestarts); g_fClipboard = FALSE; return; } if (g_fClipboard) { sleep(WIN_CLIPBOARD_DELAY); ErrorF("winClipboardProc - trying to restart clipboard thread \n"); /* Create the clipboard client thread */ if (!winInitClipboard()) { ErrorF("winClipboardProc - winClipboardInit failed.\n"); return; } winDebug("winClipboardProc - winInitClipboard returned.\n"); /* Flag that clipboard client has been launched */ g_fClipboardLaunched = TRUE; } else { ErrorF("winClipboardProc - Clipboard disabled - Exit from server \n"); /* clipboard thread has exited, stop server as well */ kill(getpid(), SIGTERM); } return NULL; }
static int winProcessXEventsTimeout(HWND hwnd, Window iWindow, Display * pDisplay, ClipboardConversionData *data, ClipboardAtoms *atoms, int iTimeoutSec) { int iConnNumber; struct timeval tv; int iReturn; DWORD dwStopTime = GetTickCount() + iTimeoutSec * 1000; winDebug("winProcessXEventsTimeout () - pumping X events for %d seconds\n", iTimeoutSec); /* Get our connection number */ iConnNumber = ConnectionNumber(pDisplay); /* Loop for X events */ while (1) { fd_set fdsRead; long remainingTime; /* Process X events */ iReturn = winClipboardFlushXEvents(hwnd, iWindow, pDisplay, data, atoms); winDebug("winProcessXEventsTimeout () - winClipboardFlushXEvents returned %d\n", iReturn); if ((WIN_XEVENTS_NOTIFY_DATA == iReturn) || (WIN_XEVENTS_NOTIFY_TARGETS == iReturn) || (WIN_XEVENTS_FAILED == iReturn)) { /* Bail out */ return iReturn; } /* We need to ensure that all pending requests are sent */ XFlush(pDisplay); /* Setup the file descriptor set */ FD_ZERO(&fdsRead); FD_SET(iConnNumber, &fdsRead); /* Adjust timeout */ remainingTime = dwStopTime - GetTickCount(); tv.tv_sec = remainingTime / 1000; tv.tv_usec = (remainingTime % 1000) * 1000; winDebug("winProcessXEventsTimeout () - %ld milliseconds left\n", remainingTime); /* Break out if no time left */ if (remainingTime <= 0) return WIN_XEVENTS_SUCCESS; /* Wait for an X event */ iReturn = select(iConnNumber + 1, /* Highest fds number */ &fdsRead, /* Read mask */ NULL, /* No write mask */ NULL, /* No exception mask */ &tv); /* Timeout */ if (iReturn < 0) { ErrorF("winProcessXEventsTimeout - Call to select () failed: %d. " "Bailing.\n", iReturn); break; } if (!FD_ISSET(iConnNumber, &fdsRead)) { winDebug("winProcessXEventsTimeout - Spurious wake, select() returned %d\n", iReturn); } } return WIN_XEVENTS_SUCCESS; }
void * winClipboardProc (void *pArg) { Atom atomClipboard, atomClipboardManager; Atom atomLocalProperty, atomCompoundText; Atom atomUTF8String, atomTargets; int iReturn; HWND hwnd = NULL; int iConnectionNumber; int fdMessageQueue; fd_set fdsRead; int iMaxDescriptor; Display *pDisplay; Window iWindow; Atom atomDeleteWindow; Bool fReturn; int iRetries; Bool fUnicodeSupport; char szDisplay[512]; ClipboardProcArgPtr pProcArg = (ClipboardProcArgPtr) pArg; ErrorF ("winClipboardProc - Hello\n"); /* Check that argument pointer is not invalid */ if (pArg == NULL) { ErrorF ("winClipboardProc - pArg is NULL, bailing.\n"); pthread_exit (NULL); } ErrorF ("winClipboardProc - Calling pthread_mutex_lock ()\n"); /* Grab the server started mutex - pause until we get it */ iReturn = pthread_mutex_lock (pProcArg->ppmServerStarted); if (iReturn != 0) { ErrorF ("winClipboardProc - pthread_mutex_lock () failed: %d\n", iReturn); pthread_exit (NULL); } ErrorF ("winClipboardProc - pthread_mutex_lock () returned.\n"); /* Do we have Unicode support? */ fUnicodeSupport = winClipboardDetectUnicodeSupport (); /* Set the current locale? What does this do? */ if (fUnicodeSupport && !g_fCalledSetLocale) { ErrorF ("winClipboardProc - Calling setlocale ()\n"); if (!setlocale (LC_ALL, "")) { ErrorF ("winClipboardProc - setlocale () error\n"); pthread_exit (NULL); } ErrorF ("winClipboardProc - setlocale () returned\n"); /* See if X supports the current locale */ if (XSupportsLocale () == False) { ErrorF ("winClipboardProc - Locale not supported by X\n"); pthread_exit (NULL); } } /* Flag that we have called setlocale */ g_fCalledSetLocale = TRUE; /* Allow multiple threads to access Xlib */ if (XInitThreads () == 0) { ErrorF ("winClipboardProc - XInitThreads failed.\n"); pthread_exit (NULL); } ErrorF ("winClipboardProc - XInitThreads () returned.\n"); /* Release the server started mutex */ pthread_mutex_unlock (pProcArg->ppmServerStarted); ErrorF ("winClipboardProc - pthread_mutex_unlock () returned.\n"); /* Set jump point for Error exits */ iReturn = setjmp (g_jmpEntry); /* Check if we should continue operations */ if (iReturn != WIN_JMP_ERROR_IO && iReturn != WIN_JMP_OKAY) { /* setjmp returned an unknown value, exit */ ErrorF ("winClipboardProc - setjmp returned: %d exiting\n", iReturn); pthread_exit (NULL); } else if (g_shutdown) { /* Shutting down, the X server severed out connection! */ ErrorF ("winClipboardProc - Detected shutdown in progress\n"); pthread_exit (NULL); } else if (iReturn == WIN_JMP_ERROR_IO) { ErrorF ("winClipboardProc - setjmp returned and hwnd: %08x\n", hwnd); } /* Initialize retry count */ iRetries = 0; /* Setup the display connection string x */ snprintf (szDisplay, 512, "127.0.0.1:%s.%d", display, (int) pProcArg->dwScreen); /* Print the display connection string */ ErrorF ("winClipboardProc - DISPLAY=%s\n", szDisplay); /* Open the X display */ do { pDisplay = XOpenDisplay (szDisplay); if (pDisplay == NULL) { ErrorF ("winClipboardProc - Could not open display, " "try: %d, sleeping: %d\n", iRetries + 1, WIN_CONNECT_DELAY); ++iRetries; sleep (WIN_CONNECT_DELAY); continue; } else break; } while (pDisplay == NULL && iRetries < WIN_CONNECT_RETRIES); /* Make sure that the display opened */ if (pDisplay == NULL) { ErrorF ("winClipboardProc - Failed opening the display, giving up\n"); pthread_exit (NULL); } ErrorF ("winClipboardProc - XOpenDisplay () returned and " "successfully opened the display.\n"); /* Create Windows messaging window */ hwnd = winClipboardCreateMessagingWindow (); /* Get our connection number */ iConnectionNumber = ConnectionNumber (pDisplay); /* Open a file descriptor for the windows message queue */ fdMessageQueue = open (WIN_MSG_QUEUE_FNAME, O_RDONLY); if (fdMessageQueue == -1) { ErrorF ("winClipboardProc - Failed opening %s\n", WIN_MSG_QUEUE_FNAME); pthread_exit (NULL); } /* Find max of our file descriptors */ iMaxDescriptor = max (fdMessageQueue, iConnectionNumber) + 1; /* Select event types to watch */ if (XSelectInput (pDisplay, DefaultRootWindow (pDisplay), SubstructureNotifyMask | StructureNotifyMask | PropertyChangeMask) == BadWindow) ErrorF ("winClipboardProc - XSelectInput generated BadWindow " "on RootWindow\n\n"); /* Create a messaging window */ iWindow = XCreateSimpleWindow (pDisplay, DefaultRootWindow (pDisplay), 1, 1, 500, 500, 0, BlackPixel (pDisplay, 0), BlackPixel (pDisplay, 0)); if (iWindow == 0) { ErrorF ("winClipboardProc - Could not create a window\n"); pthread_exit (NULL); } /* This looks like our only hope for getting a message before shutdown */ /* Register for WM_DELETE_WINDOW message from window manager */ atomDeleteWindow = XInternAtom (pDisplay, "WM_DELETE_WINDOW", False); XSetWMProtocols (pDisplay, iWindow, &atomDeleteWindow, 1); /* Set error handler */ XSetErrorHandler (winClipboardErrorHandler); XSetIOErrorHandler (winClipboardIOErrorHandler); /* Create an atom for CLIPBOARD_MANAGER */ atomClipboardManager = XInternAtom (pDisplay, "CLIPBOARD_MANAGER", False); if (atomClipboardManager == None) { ErrorF ("winClipboardProc - Could not create CLIPBOARD_MANAGER atom\n"); pthread_exit (NULL); } /* Assert ownership of CLIPBOARD_MANAGER */ iReturn = XSetSelectionOwner (pDisplay, atomClipboardManager, iWindow, CurrentTime); if (iReturn == BadAtom || iReturn == BadWindow) { ErrorF ("winClipboardProc - Could not set CLIPBOARD_MANAGER owner\n"); pthread_exit (NULL); } /* Create an atom for CLIPBOARD */ atomClipboard = XInternAtom (pDisplay, "CLIPBOARD", False); if (atomClipboard == None) { ErrorF ("winClipboardProc - Could not create CLIPBOARD atom\n"); pthread_exit (NULL); } /* Assert ownership of CLIPBOARD */ iReturn = XSetSelectionOwner (pDisplay, atomClipboard, iWindow, CurrentTime); if (iReturn == BadAtom || iReturn == BadWindow) { ErrorF ("winClipboardProc - Could not set CLIPBOARD owner\n"); pthread_exit (NULL); } /* Assert ownership of PRIMARY */ iReturn = XSetSelectionOwner (pDisplay, XA_PRIMARY, iWindow, CurrentTime); if (iReturn == BadAtom || iReturn == BadWindow) { ErrorF ("winClipboardProc - Could not set PRIMARY owner\n"); pthread_exit (NULL); } /* Local property to hold pasted data */ atomLocalProperty = XInternAtom (pDisplay, "CYGX_CUT_BUFFER", False); if (atomLocalProperty == None) { ErrorF ("winClipboardProc - Could not create CYGX_CUT_BUFFER atom\n"); pthread_exit (NULL); } /* Create an atom for UTF8_STRING */ atomUTF8String = XInternAtom (pDisplay, "UTF8_STRING", False); if (atomUTF8String == None) { ErrorF ("winClipboardProc - Could not create UTF8_STRING atom\n"); pthread_exit (NULL); } /* Create an atom for COMPOUND_TEXT */ atomCompoundText = XInternAtom (pDisplay, "COMPOUND_TEXT", False); if (atomCompoundText == None) { ErrorF ("winClipboardProc - Could not create COMPOUND_TEXT atom\n"); pthread_exit (NULL); } /* Create an atom for TARGETS */ atomTargets = XInternAtom (pDisplay, "TARGETS", False); if (atomTargets == None) { ErrorF ("winClipboardProc - Could not create TARGETS atom\n"); pthread_exit (NULL); } /* Pre-flush X events */ /* * NOTE: Apparently you'll freeze if you don't do this, * because there may be events in local data structures * already. */ winClipboardFlushXEvents (hwnd, atomClipboard, atomLocalProperty, atomUTF8String, atomCompoundText, atomTargets, atomDeleteWindow, iWindow, pDisplay, fUnicodeSupport); /* Pre-flush Windows messages */ if (!winClipboardFlushWindowsMessageQueue (hwnd)) return 0; /* Loop for X events */ while (1) { /* Setup the file descriptor set */ /* * NOTE: You have to do this before every call to select * because select modifies the mask to indicate * which descriptors are ready. */ FD_ZERO (&fdsRead); FD_SET (fdMessageQueue, &fdsRead); FD_SET (iConnectionNumber, &fdsRead); /* Wait for a Windows event or an X event */ iReturn = select (iMaxDescriptor, /* Highest fds number */ &fdsRead, /* Read mask */ NULL, /* No write mask */ NULL, /* No exception mask */ NULL); /* No timeout */ if (iReturn <= 0) { ErrorF ("winClipboardProc - Call to select () failed: %d. " "Bailing.\n", iReturn); break; } /* Branch on which descriptor became active */ if (FD_ISSET (iConnectionNumber, &fdsRead)) { /* X event ready */ #if 0 ErrorF ("winClipboardProc - X event ready\n"); #endif /* Process X events */ /* Exit when we see that server is shutting down */ fReturn = winClipboardFlushXEvents (hwnd, atomClipboard, atomLocalProperty, atomUTF8String, atomCompoundText, atomTargets, atomDeleteWindow, iWindow, pDisplay, fUnicodeSupport); if (!fReturn) { ErrorF ("winClipboardProc - Caught WM_DELETE_WINDOW - " "shutting down\n"); break; } } /* Check for Windows event ready */ if (FD_ISSET (fdMessageQueue, &fdsRead)) { /* Windows event ready */ #if 0 ErrorF ("winClipboardProc - Windows event ready\n"); #endif /* Process Windows messages */ if (!winClipboardFlushWindowsMessageQueue (hwnd)) break; } } return 0; }