Return to winmultiwindowwm.c CVS log

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 475. APM driver:
      . improved clock parameter calculation.
      . Fixed order of initialization of cursor.
      . Fixed restauration of grapical text mode.
      . Added YUY2 video format.
      . Corrected accel framebuffer pitches and max screen height
      (BugzillaR #528, Egbert Eich).
 474. Moved DisableMMIO() out of the unmap() function, added call to
      EnableMMIO() to EnterVT() to work around lockup problems when
      switching between two Xserver (BugzillaR #748, Egbert Eich).
 473. Fixed problem with text widget in Xaw when widget has a different
      depth than the default visual (Bugzilla #745, Wolfram Gloger).
 472. Fixed Sig11 when calling X -query with no ipv6 support in kernel
      (BugzillaR #737, Egbert Eich).
 471. Added support for Sparc64 and AMD64 on FreeBSD.
      This patch also disables warnings from system headers, fixes some elf
      relocations also relevant for other platforms and disables translation of
      KEY_SysReqest and KEY_Break on sparc64. (Bugzilla #739, Eric Anholt).
 470. Switched VIA video driver to fillkey helper function (Bugzilla #525,
      Alan Cox).
 469. Fixed CRT modes > FP panel size for siliconmotion (Bugzilla #727,
      Hugues Fournier).
 468. Fixed xedit coredumps: update counter of free objects when getting an
      object from the list (BugzillaR #722, Egbert Eich).
 467. Fixed definititon of UseInstalledOnCrossCompile so that it never is
      undefined (Harlod L. Hunt II).
 466. Add the 'b' flag to fopen() when opening binary xkm files. This is
      irrelevant for *nix OSes, but reqired for Cygwin. (Bugzilla #689,
      Harold L Hunt II).
 465. Cygwin:
      * MultiWindow Mode: Automatically validate the size of windows that are
        being resized.  (Earle F. Philhower III)
      * Safely shutdown the MultiWindow Mode and Clipboard Manager threads on
        server shutdown.  (Earle F. Philhower III)
      * MultiWindow Mode - Fix a crash from a string copy bug.
        (Earle F. Philhower III)
      * Add lots of defaults for keyboardlayout.  (Alexander Gottwald)
      * Add a system tha allows arbitrary commands to be added to the tray menu
        icon.  (Earle F. Philhower III)
      * Print the name of the keyboardlayout to aid in adding more layouts.
        (Alexander Gottwald)
      * Stop printing the IDirectDrawSurface4_Blt() failure messages after 10
        times.  (Harold L Hunt II)
      * Disable check for pc105 keyboard and just assume that it is present.
        This check was causing problems with certain keyboard drivers that
        failed to report that a pc105 keyboard was present.
	(Alexander Gottwald)
      * MultiWindow Mode - Add handling for WM_CHANGE_STATE IconicState
        messages;
      minimize the associated Windows window when these messages are
      received. (Harold L Hunt II).
      Submitted: (Bugzilla #704, Harold L. Hunt).
 464. cygwin.cf:
      * removed BuildDPS flag.
      * Changed Alloca flag as Cygwin 1.5.x supports alloca, now.
      * Use external expat package by default.
      * Changed XawI18nDefines to utilize improved wide char suoort in
      Cygwin 1.5.x. (Bugzilla #699, Harold L. Hunt II).
 463. Fixed C&T panel register setting (Akira Taniguchi, Egbert Eich).
 462. Fixing crash on ia64 because of wrong setjmp buffer alignment (Bugzilla
      #596, John Dennis).
 461. Changing ImPS/2 mouse Z-axis range to -8 to 7 (Bugzilla #691,
      Matthew W. S. Bell, Egbert Eich).
 460. Making sure the compiled xkb config file is found by Xnest if
      ProjectRoot is modified (Bugzilla #688, Frank Giessler).
 459. Fixing build of machine code .S files on OS/2 (Bugzilla #689,
      Frank Giessler).

  - Changed wording of message which is printed by the bigfont extension when
    shm support doesn't exist (Bugzilla #698, Harold Hunt).

/*
 *Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved.
 *
 *Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 *"Software"), to deal in the Software without restriction, including
 *without limitation the rights to use, copy, modify, merge, publish,
 *distribute, sublicense, and/or sell copies of the Software, and to
 *permit persons to whom the Software is furnished to do so, subject to
 *the following conditions:
 *
 *The above copyright notice and this permission notice shall be
 *included in all copies or substantial portions of the Software.
 *
 *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *NONINFRINGEMENT. IN NO EVENT SHALL THE XFREE86 PROJECT BE LIABLE FOR
 *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 *Except as contained in this notice, the name of the XFree86 Project
 *shall not be used in advertising or otherwise to promote the sale, use
 *or other dealings in this Software without prior written authorization
 *from the XFree86 Project.
 *
 * Authors:	Kensuke Matsuzaki
 */
/* $XFree86: xc/programs/Xserver/hw/xwin/winwindow.c,v 1.5 2002/11/07 10:31:32 alanh Exp $ */

/* X headers */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/select.h>
#include <fcntl.h>
#include <setjmp.h>
#include <pthread.h>
#include <X11/X.h>
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/Xlocale.h>
#include <X11/Xproto.h>
#include <X11/Xutil.h>

/* Fixups to prevent collisions between Windows and X headers */
#define ATOM DWORD

/* Windows headers */
#include <windows.h>

/* Local headers */
#include "winwindow.h"


/*
 * Constant defines
 */

#define WIN_CONNECT_RETRIES	5
#define WIN_CONNECT_DELAY	5
#define WIN_MSG_QUEUE_FNAME	"/dev/windows"
#define WIN_JMP_OKAY		0
#define WIN_JMP_ERROR_IO	2


/*
 * Local structures
 */

typedef struct _WMMsgNodeRec {
  winWMMessageRec	msg;
  struct _WMMsgNodeRec	*pNext;
} WMMsgNodeRec, *WMMsgNodePtr;

typedef struct _WMMsgQueueRec {
  struct _WMMsgNodeRec	*pHead;
  struct _WMMsgNodeRec	*pTail;
  pthread_mutex_t	pmMutex;
  pthread_cond_t	pcNotEmpty;
} WMMsgQueueRec, *WMMsgQueuePtr;

typedef struct _WMInfo {
  Display		*pDisplay;
  WMMsgQueueRec		wmMsgQueue;
  Atom			atmWmProtos;
  Atom			atmWmDelete;
  Atom			atmPrivMap;
} WMInfoRec, *WMInfoPtr;

typedef struct _WMProcArgRec {
  DWORD			dwScreen;
  WMInfoPtr		pWMInfo;
  pthread_mutex_t	*ppmServerStarted;
} WMProcArgRec, *WMProcArgPtr;

typedef struct _XMsgProcArgRec {
  Display      *pDisplay;
  DWORD        dwScreen;
  WMInfoPtr    pWMInfo;
  pthread_mutex_t	*ppmServerStarted;
} XMsgProcArgRec, *XMsgProcArgPtr;


/*
 * References to external symbols
 */

extern char *display;
extern void ErrorF (const char* /*f*/, ...);
extern Bool g_fCalledSetLocale;
extern Bool g_fCalledXInitThreads;


/*
 * Prototypes for local functions
 */

static void
PushMessage (WMMsgQueuePtr pQueue, WMMsgNodePtr pNode);

static WMMsgNodePtr
PopMessage (WMMsgQueuePtr pQueue, WMInfoPtr pWMInfo);

static Bool
InitQueue (WMMsgQueuePtr pQueue);

static void
GetWindowName (Display * pDpy, Window iWin, char **ppName);

static int
SendXMessage (Display *pDisplay, Window iWin, Atom atmType, long nData);

static void
UpdateName (WMInfoPtr pWMInfo, Window iWindow);

static void*
winMultiWindowWMProc (void* pArg);

static int
winMultiWindowWMErrorHandler (Display *pDisp, XErrorEvent *e);

static void *
winMultiWindowXMsgProc (void *pArg);

static void
winInitMultiWindowWM (WMInfoPtr pWMInfo, WMProcArgPtr pProcArg);

static int
winMutliWindowWMIOErrorHandler (Display *pDisplay);


/*
 * Local globals
 */

static int			g_nQueueSize;
static jmp_buf			g_jmpEntry;
static Bool                     g_shutdown = FALSE;



/*
 * PushMessage - Push a message onto the queue
 */

static void
PushMessage (WMMsgQueuePtr pQueue, WMMsgNodePtr pNode)
{

  /* Lock the queue mutex */
  pthread_mutex_lock (&pQueue->pmMutex);

  pNode->pNext = NULL;
  
  if (pQueue->pTail != NULL)
    {
      pQueue->pTail->pNext = pNode;
    }
  pQueue->pTail = pNode;
  
  if (pQueue->pHead == NULL)
    {
      pQueue->pHead = pNode;
    }


#if 0
  switch (pNode->msg.msg)
    {
    case WM_WM_MOVE:
      ErrorF ("\tWM_WM_MOVE\n");
      break;
    case WM_WM_RAISE:
      ErrorF ("\tWM_WM_RAISE\n");
      break;
    case WM_WM_LOWER:
      ErrorF ("\tWM_WM_RAISE\n");
      break;
    case WM_WM_MAP:
      ErrorF ("\tWM_WM_MAP\n");
      break;
    case WM_WM_UNMAP:
      ErrorF ("\tWM_WM_UNMAP\n");
      break;
    case WM_WM_KILL:
      ErrorF ("\tWM_WM_KILL\n");
      break;
    default:
      ErrorF ("Unknown Message.\n");
      break;
    }
#endif

  /* Increase the count of elements in the queue by one */
  ++g_nQueueSize;

  /* Release the queue mutex */
  pthread_mutex_unlock (&pQueue->pmMutex);

  /* Signal that the queue is not empty */
  pthread_cond_signal (&pQueue->pcNotEmpty);
}


#if CYGMULTIWINDOW_DEBUG
/*
 * QueueSize - Return the size of the queue
 */

static int
QueueSize (WMMsgQueuePtr pQueue)
{
  WMMsgNodePtr		pNode;
  int			nSize = 0;
  
  /* Loop through all elements in the queue */
  for (pNode = pQueue->pHead; pNode != NULL; pNode = pNode->pNext)
    ++nSize;

  return nSize;
}
#endif


/*
 * PopMessage - Pop a message from the queue
 */

static WMMsgNodePtr
PopMessage (WMMsgQueuePtr pQueue, WMInfoPtr pWMInfo)
{
  WMMsgNodePtr		pNode;

  /* Lock the queue mutex */
  pthread_mutex_lock (&pQueue->pmMutex);

  /* Wait for --- */
  while (pQueue->pHead == NULL)
    {
      pthread_cond_wait (&pQueue->pcNotEmpty, &pQueue->pmMutex);
    }
  
  pNode = pQueue->pHead;
  if (pQueue->pHead != NULL)
    {
      pQueue->pHead = pQueue->pHead->pNext;
    }

  if (pQueue->pTail == pNode)
    {
      pQueue->pTail = NULL;
    }

  /* Drop the number of elements in the queue by one */
  --g_nQueueSize;

#if CYGMULTIWINDOW_DEBUG
  ErrorF ("Queue Size %d %d\n", g_nQueueSize, QueueSize(pQueue));
#endif
  
  /* Release the queue mutex */
  pthread_mutex_unlock (&pQueue->pmMutex);

  return pNode;
}


#if 0
/*
 * HaveMessage - 
 */

static Bool
HaveMessage (WMMsgQueuePtr pQueue, UINT msg, Window iWindow)
{
  WMMsgNodePtr pNode;
  
  for (pNode = pQueue->pHead; pNode != NULL; pNode = pNode->pNext)
    {
      if (pNode->msg.msg==msg && pNode->msg.iWindow==iWindow)
	return True;
    }
  
  return False;
}
#endif


/*
 * InitQueue - Initialize the Window Manager message queue
 */

static
Bool
InitQueue (WMMsgQueuePtr pQueue)
{
  /* Check if the pQueue pointer is NULL */
  if (pQueue == NULL)
    {
      ErrorF ("InitQueue - pQueue is NULL.  Exiting.\n");
      return FALSE;
    }

  /* Set the head and tail to NULL */
  pQueue->pHead = NULL;
  pQueue->pTail = NULL;

  /* There are no elements initially */
  g_nQueueSize = 0;

#if CYGMULTIWINDOW_DEBUG
  ErrorF ("InitQueue - Queue Size %d %d\n", g_nQueueSize, QueueSize(pQueue));
#endif

  ErrorF ("InitQueue - Calling pthread_mutex_init\n");

  /* Create synchronization objects */
  pthread_mutex_init (&pQueue->pmMutex, NULL);

  ErrorF ("InitQueue - pthread_mutex_init returned\n");
  ErrorF ("InitQueue - Calling pthread_cond_init\n");

  pthread_cond_init (&pQueue->pcNotEmpty, NULL);

  ErrorF ("InitQueue - pthread_cond_init returned\n");

  return TRUE;
}


/*
 * GetWindowName - Retrieve the title of an X Window
 */

static void
GetWindowName (Display *pDisplay, Window iWin, char **ppName)
{
  int			nResult, nNum;
  char			**ppList;
  XTextProperty		xtpName;
  
#if CYGMULTIWINDOW_DEBUG
  ErrorF ("GetWindowName\n");
#endif

  /* Intialize ppName to NULL */
  *ppName = NULL;

  /* Try to get --- */
  nResult = XGetWMName (pDisplay, iWin, &xtpName);
  if (!nResult || !xtpName.value || !xtpName.nitems)
    {
#if CYGMULTIWINDOW_DEBUG
      ErrorF ("GetWindowName - XGetWMName failed.  No name.\n");
#endif
      return;
    }
  
  /* */
  if (xtpName.encoding == XA_STRING)
    {
      /* */
      if (xtpName.value)
	{
	  *ppName = strdup ((char*)xtpName.value);
	  XFree (xtpName.value);
	}

#if CYGMULTIWINDOW_DEBUG
      ErrorF ("GetWindowName - XA_STRING %s\n", *ppName);
#endif
    }
  else
    {
      XmbTextPropertyToTextList (pDisplay, &xtpName, &ppList, &nNum);

      /* */
      if (nNum && ppList && *ppList)
	{
	  XFree (xtpName.value);
	  *ppName = strdup (*ppList);
	  XFreeStringList (ppList);
	}

#if CYGMULTIWINDOW_DEBUG
      ErrorF ("GetWindowName - %s %s\n",
	      XGetAtomName (pDisplay, xtpName.encoding), *ppName);
#endif
    }


#if CYGMULTIWINDOW_DEBUG
  ErrorF ("GetWindowName - Returning\n");
#endif
}


/*
 * Send a message to the X server from the WM thread
 */

static int
SendXMessage (Display *pDisplay, Window iWin, Atom atmType, long nData)
{
  XEvent		e;

  /* Prepare the X event structure */
  e.type = ClientMessage;
  e.xclient.window = iWin;
  e.xclient.message_type = atmType;
  e.xclient.format = 32;
  e.xclient.data.l[0] = nData;
  e.xclient.data.l[1] = CurrentTime;

  /* Send the event to X */
  return XSendEvent (pDisplay, iWin, False, NoEventMask, &e);
}


/*
 * Updates the name of a HWND according to its X WM_NAME property
 */

static void
UpdateName (WMInfoPtr pWMInfo, Window iWindow)
{
  char			*pszName;
  Atom			atmType;
  int			fmtRet;
  unsigned long		items, remain;
  HWND			*retHwnd, hWnd;
  XWindowAttributes	attr;

  hWnd = 0;

  /* See if we can get the cached HWND for this window... */
  if (XGetWindowProperty (pWMInfo->pDisplay,
			  iWindow,
			  pWMInfo->atmPrivMap,
			  0,
			  1,
			  False,
			  pWMInfo->atmPrivMap,
			  &atmType,
			  &fmtRet,
			  &items,
			  &remain,
			  (unsigned char **) &retHwnd) == Success)
    {
      if (retHwnd)
	{
	  hWnd = *retHwnd;
	  XFree (retHwnd);
	}
    }
  
  /* Some sanity checks */
  if (!hWnd) return;
  if (!IsWindow (hWnd)) return;
  
  /* Set the Windows window name */
  GetWindowName (pWMInfo->pDisplay, iWindow, &pszName);
  if (pszName)
    {
      /* Get the window attributes */
      XGetWindowAttributes (pWMInfo->pDisplay,
			    iWindow,
			    &attr);
      if (!attr.override_redirect)
	{
	  SetWindowText (hWnd, pszName);
	  winUpdateIcon (iWindow);
	}

      free (pszName);
    }
}


/*
 * winMultiWindowWMProc
 */

static void *
winMultiWindowWMProc (void *pArg)
{
  WMProcArgPtr		pProcArg = (WMProcArgPtr)pArg;
  WMInfoPtr		pWMInfo = pProcArg->pWMInfo;
  
  /* Initialize the Window Manager */
  winInitMultiWindowWM (pWMInfo, pProcArg);
  
#if CYGMULTIWINDOW_DEBUG
  ErrorF ("winMultiWindowWMProc ()\n");
#endif

  /* Loop until we explicity break out */
  for (;;)
    {
      WMMsgNodePtr	pNode;

      /* Pop a message off of our queue */
      pNode = PopMessage (&pWMInfo->wmMsgQueue, pWMInfo);
      if (pNode == NULL)
	{
	  /* Bail if PopMessage returns without a message */
	  /* NOTE: Remember that PopMessage is a blocking function. */
	  ErrorF ("winMultiWindowWMProc - Queue is Empty?\n");
	  pthread_exit (NULL);
	}

#if CYGMULTIWINDOW_DEBUG
      ErrorF ("winMultiWindowWMProc - %d ms MSG: %d ID: %d\n",
	      GetTickCount (), (int)pNode->msg.msg, (int)pNode->msg.dwID);
#endif
      
      /* Branch on the message type */
      switch (pNode->msg.msg)
	{
#if 0
	case WM_WM_MOVE:
	  ErrorF ("\tWM_WM_MOVE\n");
	  break;

	case WM_WM_SIZE:
	  ErrorF ("\tWM_WM_SIZE\n");
	  break;
#endif

	case WM_WM_RAISE:
#if CYGMULTIWINDOW_DEBUG
	  ErrorF ("\tWM_WM_RAISE\n");
#endif

	  /* Raise the window */
	  XRaiseWindow (pWMInfo->pDisplay, pNode->msg.iWindow);
	  break;

	case WM_WM_LOWER:
#if CYGMULTIWINDOW_DEBUG
	  ErrorF ("\tWM_WM_LOWER\n");
#endif

	  /* Lower the window */
	  XLowerWindow (pWMInfo->pDisplay, pNode->msg.iWindow);
	  break;

	case WM_WM_MAP:
#if CYGMULTIWINDOW_DEBUG
	  ErrorF ("\tWM_WM_MAP\n");
#endif
	  /* Put a note as to the HWND associated with this Window */
	  XChangeProperty (pWMInfo->pDisplay,
			   pNode->msg.iWindow,
			   pWMInfo->atmPrivMap,
			   pWMInfo->atmPrivMap,
			   32,
			   PropModeReplace,
			   (unsigned char *) &(pNode->msg.hwndWindow),
			   1);
	  UpdateName (pWMInfo, pNode->msg.iWindow);
	  winUpdateIcon (pNode->msg.iWindow);
	  break;

	case WM_WM_UNMAP:
#if CYGMULTIWINDOW_DEBUG
	  ErrorF ("\tWM_WM_UNMAP\n");
#endif
	  
	  /* Unmap the window */
	  XUnmapWindow (pWMInfo->pDisplay, pNode->msg.iWindow);
	  break;

	case WM_WM_KILL:
#if CYGMULTIWINDOW_DEBUG
	  ErrorF ("\tWM_WM_KILL\n");
#endif
	  {
	    int				i, n, found = 0;
	    Atom			*protocols;
	    
	    /* --- */
	    if (XGetWMProtocols (pWMInfo->pDisplay,
				 pNode->msg.iWindow,
				 &protocols,
				 &n))
	      {
		for (i = 0; i < n; ++i)
		  if (protocols[i] == pWMInfo->atmWmDelete)
		    ++found;
		
		XFree (protocols);
	      }

	    /* --- */
	    if (found)
	      SendXMessage (pWMInfo->pDisplay,
			    pNode->msg.iWindow,
			    pWMInfo->atmWmProtos,
			    pWMInfo->atmWmDelete);
	    else
	      XKillClient (pWMInfo->pDisplay,
			   pNode->msg.iWindow);
	  }
	  break;

	case WM_WM_ACTIVATE:
#if CYGMULTIWINDOW_DEBUG
	  ErrorF ("\tWM_WM_ACTIVATE\n");
#endif
	  
	  /* Set the input focus */
	  XSetInputFocus (pWMInfo->pDisplay,
			  pNode->msg.iWindow,
			  RevertToPointerRoot,
			  CurrentTime);
	  break;

	case WM_WM_NAME_EVENT:
	  UpdateName (pWMInfo, pNode->msg.iWindow);
	  break;

	case WM_WM_HINTS_EVENT:
	  winUpdateIcon (pNode->msg.iWindow);
	  break;

	case WM_WM_CHANGE_STATE:
	  /* Minimize the window in Windows */
	  winMinimizeWindow (pNode->msg.iWindow);
	  break;

	default:
	  ErrorF ("winMultiWindowWMProc - Unknown Message.\n");
	  pthread_exit (NULL);
	  break;
	}

      /* Free the retrieved message */
      free (pNode);

      /* Flush any pending events on our display */
      XFlush (pWMInfo->pDisplay);
    }

  /* Free the condition variable */
  pthread_cond_destroy (&pWMInfo->wmMsgQueue.pcNotEmpty);
  
  /* Free the mutex variable */
  pthread_mutex_destroy (&pWMInfo->wmMsgQueue.pmMutex);
  
  /* Free the passed-in argument */
  free (pProcArg);
  
#if CYGMULTIWINDOW_DEBUG
  ErrorF("-winMultiWindowWMProc ()\n");
#endif
}


/*
 * winMultiWindowWMErrorHandler - Our application specific error handler
 */

static int
winMultiWindowWMErrorHandler (Display *pDisplay, XErrorEvent *pErr)
{
  char pszErrorMsg[100];

  if (pErr->request_code == X_ChangeWindowAttributes
      && pErr->error_code == BadAccess)
    {
      ErrorF ("winMultiWindowWMErrorHandler - ChangeWindowAttributes "
	      "BadAccess.\n");
#if 0
      pthread_exit (NULL);
#endif
      return 0;
    }
  
  XGetErrorText (pDisplay,
		 pErr->error_code,
		 pszErrorMsg,
		 sizeof (pszErrorMsg));
  ErrorF ("winMultiWindowWMErrorHandler - ERROR: %s\n", pszErrorMsg);

  if (pErr->error_code == BadWindow
      || pErr->error_code == BadMatch
      || pErr->error_code == BadDrawable)
    {
#if 0
      pthread_exit (NULL);
#endif
      return 0;
    }

  pthread_exit (NULL);
  return 0;
}


/*
 *
 */

static void *
winMultiWindowXMsgProc (void *pArg)
{
  winWMMessageRec       msg;
  XMsgProcArgPtr	pProcArg = (XMsgProcArgPtr) pArg;
  char			pszDisplay[512];
  int                   iRetries;
  XEvent		event;
  Atom                  atmWmName;
  Atom                  atmWmHints;
  Atom			atmWmChange;
  int			iReturn;
  XIconSize		*xis;

  ErrorF ("winMultiWindowXMsgProc - Hello\n");

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

  ErrorF ("winMultiWindowXMsgProc - 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 ("winMultiWindowXMsgProc - pthread_mutex_lock () failed: %d\n",
	      iReturn);
      pthread_exit (NULL);
    }

  ErrorF ("winMultiWindowXMsgProc - pthread_mutex_lock () returned.\n");

  /* Only call XInitThreads once for the whole process */
  if (!g_fCalledXInitThreads)
    {
      /* Allow multiple threads to access Xlib */
      if (XInitThreads () == 0)
	{
	  ErrorF ("winMultiWindowXMsgProc - XInitThreads () failed.\n");
	  pthread_exit (NULL);
	}
      
      /* Flag that XInitThreads has been called */
      g_fCalledXInitThreads = TRUE;

      ErrorF ("winMultiWindowXMsgProc - XInitThreads () returned.\n");
    }

  /* Release the server started mutex */
  pthread_mutex_unlock (pProcArg->ppmServerStarted);

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

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

  /* Print the display connection string */
  ErrorF ("winMultiWindowXMsgProc - DISPLAY=%s\n", pszDisplay);
  
  iRetries = 0;

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

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

  XSelectInput (pProcArg->pDisplay,
		RootWindow(pProcArg->pDisplay, pProcArg->dwScreen),
		SubstructureNotifyMask);
  
  /* Set up the supported icon sizes */
  xis = XAllocIconSize ();
  if (xis)
    {
      xis->min_width = xis->min_height = 16;
      xis->max_width = xis->max_height = 48;
      xis->width_inc = xis->height_inc = 16;
      XSetIconSizes (pProcArg->pDisplay,
		     RootWindow (pProcArg->pDisplay, pProcArg->dwScreen),
		     xis,
		     1);
      XFree (xis);
    }

  atmWmName   = XInternAtom (pProcArg->pDisplay,
			     "WM_NAME",
			     False);
  atmWmHints   = XInternAtom (pProcArg->pDisplay,
			      "WM_HINTS",
			      False);
  atmWmChange  = XInternAtom (pProcArg->pDisplay,
			      "WM_CHANGE_STATE",
			      False);

  /* Loop until we explicitly break out */
  while (1)
    {
      /* Fetch next event */
      XNextEvent (pProcArg->pDisplay, &event);

      /* Branch on event type */
      if (event.type == CreateNotify)
	{
	  XSelectInput (pProcArg->pDisplay,
			event.xcreatewindow.window,
			PropertyChangeMask);
	}
      else if (event.type == PropertyNotify
	       && event.xproperty.atom == atmWmName)
	{
	  memset (&msg, 0, sizeof (msg));

	  msg.msg = WM_WM_NAME_EVENT;
	  msg.iWindow = event.xproperty.window;

	  /* Other fields ignored */
	  winSendMessageToWM (pProcArg->pWMInfo, &msg);
	}
      else if (event.type == PropertyNotify
	       && event.xproperty.atom == atmWmHints)
	{
	  memset (&msg, 0, sizeof (msg));

	  msg.msg = WM_WM_HINTS_EVENT;
	  msg.iWindow = event.xproperty.window;

	  /* Other fields ignored */
	  winSendMessageToWM (pProcArg->pWMInfo, &msg);
	}
      else if (event.type == ClientMessage
	       && event.xclient.message_type == atmWmChange
	       && event.xclient.data.l[0] == IconicState)
	{
	  ErrorF ("winMultiWindowXMsgProc - WM_CHANGE_STATE - IconicState\n");

	  memset (&msg, 0, sizeof (msg));

	  msg.msg = WM_WM_CHANGE_STATE;
	  msg.iWindow = event.xclient.window;

	  winSendMessageToWM (pProcArg->pWMInfo, &msg);
	}
    }
}


/*
 * winInitWM - Entry point for the X server to spawn
 * the Window Manager thread.  Called from
 * winscrinit.c/winFinishScreenInitFB ().
 */

Bool
winInitWM (void **ppWMInfo,
	   pthread_t *ptWMProc,
	   pthread_t *ptXMsgProc,
	   pthread_mutex_t *ppmServerStarted,
	   int dwScreen)
{
  WMProcArgPtr		pArg = (WMProcArgPtr) malloc (sizeof(WMProcArgRec));
  WMInfoPtr		pWMInfo = (WMInfoPtr) malloc (sizeof(WMInfoRec));
  XMsgProcArgPtr	pXMsgArg = (XMsgProcArgPtr) malloc (sizeof(XMsgProcArgRec));

  /* Bail if the input parameters are bad */
  if (pArg == NULL || pWMInfo == NULL)
    {
      ErrorF ("winInitWM - malloc fail.\n");
      return FALSE;
    }
  
  /* Set a return pointer to the Window Manager info structure */
  *ppWMInfo = pWMInfo;

  /* Setup the argument structure for the thread function */
  pArg->dwScreen = dwScreen;
  pArg->pWMInfo = pWMInfo;
  pArg->ppmServerStarted = ppmServerStarted;
  
  /* Intialize the message queue */
  if (!InitQueue (&pWMInfo->wmMsgQueue))
    {
      ErrorF ("winInitWM - InitQueue () failed.\n");
      return FALSE;
    }
  
  /* Spawn a thread for the Window Manager */
  if (pthread_create (ptWMProc, NULL, winMultiWindowWMProc, pArg))
    {
      /* Bail if thread creation failed */
      ErrorF ("winInitWM - pthread_create failed for Window Manager.\n");
      return FALSE;
    }

  /* Spawn the XNextEvent thread, will send messages to WM */
  pXMsgArg->dwScreen = dwScreen;
  pXMsgArg->pWMInfo = pWMInfo;
  pXMsgArg->ppmServerStarted = ppmServerStarted;
  if (pthread_create (ptXMsgProc, NULL, winMultiWindowXMsgProc, pXMsgArg))
    {
      /* Bail if thread creation failed */
      ErrorF ("winInitWM - pthread_create failed on XMSG.\n");
      return FALSE;
    }

#if CYGDEBUG || YES
  ErrorF ("winInitWM - Returning.\n");
#endif

  return TRUE;
}


/*
 * winInitMultiWindowWM - 
 */

Bool
winClipboardDetectUnicodeSupport ();

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;
  
  /* Only call XInitThreads once for the whole process */
  if (!g_fCalledXInitThreads)
    {
      /* Allow multiple threads to access Xlib */
      if (XInitThreads () == 0)
	{
	  ErrorF ("winInitMultiWindowWM - XInitThreads () failed.\n");
	  pthread_exit (NULL);
	}
      
      /* Flag that XInitThreads has been called */
      g_fCalledXInitThreads = TRUE;

      ErrorF ("winInitMultiWindowWM - XInitThreads () returned.\n");
    }

  /* Release the server started mutex */
  pthread_mutex_unlock (pProcArg->ppmServerStarted);

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

  /* Set jump point for IO 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 (g_shutdown)
    {
      /* Shutting down, the X server severed out connection! */
      ErrorF ("winInitMultiWindowWM - Detected shutdown in progress\n");
      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,
	    (int) 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);
  pWMInfo->atmPrivMap  = XInternAtom (pWMInfo->pDisplay,
				      WIN_HWND_CACHE,
				      False);
}


/*
 * winSendMessageToWM - Send a message from the X thread to the WM thread
 */

void
winSendMessageToWM (void *pWMInfo, winWMMessagePtr pMsg)
{
  WMMsgNodePtr pNode;
  
#if CYGMULTIWINDOW_DEBUG
  ErrorF ("winSendMessageToWM ()\n");
#endif
  
  pNode = (WMMsgNodePtr)malloc(sizeof(WMMsgNodeRec));
  if (pNode != NULL)
    {
      memcpy (&pNode->msg, pMsg, sizeof(winWMMessageRec));
      PushMessage (&((WMInfoPtr)pWMInfo)->wmMsgQueue, pNode);
    }
}


/*
 * winMutliWindowWMIOErrorHandler - Our application specific IO error handler
 */

static int
winMutliWindowWMIOErrorHandler (Display *pDisplay)
{
  printf ("\nwinMutliWindowWMIOErrorHandler!\n\n");

  /* Restart at the main entry point */
  longjmp (g_jmpEntry, WIN_JMP_ERROR_IO);
  
  return 0;
}


/*
 * Notify the MWM thread we're exiting and not to reconnect
 */

void
winDeinitMultiWindowWM ()
{
  ErrorF ("winDeinitMultiWindowWM - Noting shutdown in progress\n");
  g_shutdown = TRUE;
}