Ejemplo n.º 1
0
static void
winInitMultiWindowWM (WMInfoPtr pWMInfo, WMProcArgPtr pProcArg)
{
  int                   iRetries = 0;
  char			pszDisplay[512];
  int			iReturn;
  Bool			fUnicodeSupport;

  ErrorF ("winInitMultiWindowWM - Hello\n");

  /* Check that argument pointer is not invalid */
  if (pProcArg == NULL)
    {
      ErrorF ("winInitMultiWindowWM - pProcArg is NULL, bailing.\n");
      pthread_exit (NULL);
    }

  ErrorF ("winInitMultiWindowWM - Calling pthread_mutex_lock ()\n");

  /* Grab our garbage mutex to satisfy pthread_cond_wait */
  iReturn = pthread_mutex_lock (pProcArg->ppmServerStarted);
  if (iReturn != 0)
    {
      ErrorF ("winInitMultiWindowWM - pthread_mutex_lock () failed: %d\n",
	      iReturn);
      pthread_exit (NULL);
    }

  ErrorF ("winInitMultiWindowWM - 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 ("winInitMultiWindowWM - Calling setlocale ()\n");
      if (!setlocale (LC_ALL, ""))
	{
	  ErrorF ("winInitMultiWindowWM - setlocale () error\n");
	  pthread_exit (NULL);
	}
      ErrorF ("winInitMultiWindowWM - setlocale () returned\n");
      
      /* See if X supports the current locale */
      if (XSupportsLocale () == False)
	{
	  ErrorF ("winInitMultiWindowWM - Locale not supported by X\n");
	  pthread_exit (NULL);
	}
    }

  /* Flag that we have called setlocale */
  g_fCalledSetLocale = TRUE;
  
  /* Release the garbage mutex */
  pthread_mutex_unlock (pProcArg->ppmServerStarted);

  ErrorF ("winInitMultiWindowWM - pthread_mutex_unlock () returned.\n");

  /* Allow multiple threads to access Xlib */
  if (XInitThreads () == 0)
    {
      ErrorF ("winInitMultiWindowWM - XInitThreads () failed.\n");
      pthread_exit (NULL);
    }
  
  ErrorF ("winInitMultiWindowWM - XInitThreads () 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 ("winInitMultiWindowWM - setjmp returned: %d exiting\n",
	      iReturn);
      pthread_exit (NULL);
    }
  else if (iReturn == WIN_JMP_ERROR_IO)
    {
      ErrorF ("winInitMultiWindowWM - setjmp returned WIN_JMP_ERROR_IO\n");
    }

  /* Setup the display connection string x */
  snprintf (pszDisplay, 512, "127.0.0.1:%s.%d", display, pProcArg->dwScreen);

  /* Print the display connection string */
  ErrorF ("winInitMultiWindowWM - DISPLAY=%s\n", pszDisplay);
  
  /* Open the X display */
  do
    {
      /* Try to open the display */
      pWMInfo->pDisplay = XOpenDisplay (pszDisplay);
      if (pWMInfo->pDisplay == NULL)
	{
	  ErrorF ("winInitMultiWindowWM - Could not open display, try: %d, "
		  "sleeping: %d\n\f",
		  iRetries + 1, WIN_CONNECT_DELAY);
	  ++iRetries;
	  sleep (WIN_CONNECT_DELAY);
	  continue;
	}
      else
	break;
    }
  while (pWMInfo->pDisplay == NULL && iRetries < WIN_CONNECT_RETRIES);
  
  /* Make sure that the display opened */
  if (pWMInfo->pDisplay == NULL)
    {
      ErrorF ("winInitMultiWindowWM - Failed opening the display, "
	      "giving up.\n\f");
      pthread_exit (NULL);
    }

  ErrorF ("winInitMultiWindowWM - XOpenDisplay () returned and "
	  "successfully opened the display.\n");
  
  /* Install our error handler */
  XSetErrorHandler (winMultiWindowWMErrorHandler);
  XSetIOErrorHandler (winMutliWindowWMIOErrorHandler);

  /* Create some atoms */
  pWMInfo->atmWmProtos = XInternAtom (pWMInfo->pDisplay,
				      "WM_PROTOCOLS",
				      False);
  pWMInfo->atmWmDelete = XInternAtom (pWMInfo->pDisplay,
				      "WM_DELETE_WINDOW",
				      False);
}
Ejemplo n.º 2
0
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;

  ErrorF ("winClipboardProc - Hello\n");

  /* Do we have Unicode support? */
  g_fUnicodeSupport = winClipboardDetectUnicodeSupport ();

  /* Do we use Unicode clipboard? */
  fUseUnicode = g_fUnicodeClipboard && g_fUnicodeSupport;

  /* 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");
      pthread_exit (NULL);
    }

  /* See if X supports the current locale */
  if (XSupportsLocale () == False)
    {
      ErrorF ("winClipboardProc - Locale not supported by X.  Exiting.\n");
      pthread_exit (NULL);
    }

  /* 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 (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);
    }

#if defined(XCSECURITY)
  /* Use our generated cookie for authentication */
  XSetAuthorization (AUTH_NAME,
		     strlen (AUTH_NAME),
		     g_pAuthData,
		     g_uiAuthDataLen);
#endif

  /* Set error handler */
  XSetErrorHandler (winClipboardErrorHandler);
  XSetIOErrorHandler (winClipboardIOErrorHandler);

  /* 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");
      pthread_exit (NULL);
    }

  /* 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);
      pthread_exit (NULL);
    }

  /* Find max of our file descriptors */
  iMaxDescriptor = max (fdMessageQueue, iConnectionNumber) + 1;
#else
  iMaxDescriptor = iConnectionNumber + 1;
#endif

  /* Select event types to watch */
  if (XSelectInput (pDisplay,
		    DefaultRootWindow (pDisplay),
		    SubstructureNotifyMask |
		    StructureNotifyMask |
		    PropertyChangeMask) == BadWindow)
    ErrorF ("winClipboardProc - XSelectInput generated BadWindow "
	    "on RootWindow\n\n");

  /* 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");
      pthread_exit (NULL);
    }

  /* 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)
	{
	  ErrorF ("winClipboardProc - Could not set PRIMARY owner\n");
	  pthread_exit (NULL);
	}

      /* CLIPBOARD */
      iReturn = XSetSelectionOwner (pDisplay, atomClipboard,
				    iWindow, CurrentTime);
      if (iReturn == BadAtom || iReturn == BadWindow)
	{
	  ErrorF ("winClipboardProc - Could not set CLIPBOARD owner\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,
			    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;
	    }
	}
    }

  /* 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

  g_iClipboardWindow = None;
  g_pClipboardDisplay = NULL;
  g_hwndClipboard = NULL;

  return NULL;
}
Ejemplo n.º 3
0
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;
}