xserver update 19/10/2010

1 files changed, 352 insertions, 336 deletions

diff --git a/xorg-server/hw/xwin/winengine.c b/xorg-server/hw/xwin/winengine.c
index fb9aed8a0..1e3ee2bef 100644
--- a/xorg-server/hw/xwin/winengine.c
+++ b/xorg-server/hw/xwin/winengine.c
@@ -1,336 +1,352 @@
-/*
- *Copyright (C) 2001-2004 Harold L Hunt II 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 HAROLD L HUNT II 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 Harold L Hunt II
- *shall not be used in advertising or otherwise to promote the sale, use
- *or other dealings in this Software without prior written authorization
- *from Harold L Hunt II.
- *
- * Authors:	Harold L Hunt II
- */
-
-#ifdef HAVE_XWIN_CONFIG_H
-#include <xwin-config.h>
-#endif
-#include "win.h"
-#include "winmsg.h"
-
-
-/*
- * External global variables
- */
-
-extern const GUID _IID_IDirectDraw4;
-
-
-/*
- * Detect engines supported by current Windows version
- * DirectDraw version and hardware
- */
-
-void
-winDetectSupportedEngines (void)
-{
-  OSVERSIONINFO		osvi;
-
-  /* Initialize the engine support flags */
-  g_dwEnginesSupported = WIN_SERVER_SHADOW_GDI;
-
-#ifdef XWIN_NATIVEGDI
-  g_dwEnginesSupported |= WIN_SERVER_NATIVE_GDI;
-#endif
-
-  /* Get operating system version information */
-  ZeroMemory (&osvi, sizeof (osvi));
-  osvi.dwOSVersionInfoSize = sizeof (osvi);
-  GetVersionEx (&osvi);
-
-  /* Branch on platform ID */
-  switch (osvi.dwPlatformId)
-    {
-    case VER_PLATFORM_WIN32_NT:
-      /* Engine 4 is supported on NT only */
-      winErrorFVerb (2, "winDetectSupportedEngines - Windows NT/2000/XP\n");
-      break;
-
-    case VER_PLATFORM_WIN32_WINDOWS:
-      /* Engine 4 is supported on NT only */
-      winErrorFVerb (2, "winDetectSupportedEngines - Windows 95/98/Me\n");
-      break;
-    }
-
-  /* Do we have DirectDraw? */
-  if (g_hmodDirectDraw != NULL)
-    {
-      LPDIRECTDRAW	lpdd = NULL;
-      LPDIRECTDRAW4	lpdd4 = NULL;
-      HRESULT		ddrval;
-
-      /* Was the DirectDrawCreate function found? */
-      if (g_fpDirectDrawCreate == NULL)
-	{
-	  /* No DirectDraw support */
-	  return;
-	}
-
-      /* DirectDrawCreate exists, try to call it */
-      /* Create a DirectDraw object, store the address at lpdd */
-      ddrval = (*g_fpDirectDrawCreate) (NULL,
-					(void**) &lpdd,
-					NULL);
-      if (FAILED (ddrval))
-	{
-	  /* No DirectDraw support */
-	  winErrorFVerb (2, "winDetectSupportedEngines - DirectDraw not installed\n");
-	  return;
-	}
-      else
-	{
-	  /* We have DirectDraw */
-	  winErrorFVerb (2, "winDetectSupportedEngines - DirectDraw installed\n");
-	  g_dwEnginesSupported |= WIN_SERVER_SHADOW_DD;
-
-#ifdef XWIN_PRIMARYFB
-	  /* Allow PrimaryDD engine if NT */
-	  if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT)
-	    {
-	      g_dwEnginesSupported |= WIN_SERVER_PRIMARY_DD;
-	      winErrorFVerb (2, "winDetectSupportedEngines - Allowing PrimaryDD\n");
-	    }
-#endif
-	}
-      
-      /* Try to query for DirectDraw4 interface */
-      ddrval = IDirectDraw_QueryInterface (lpdd,
-					   &IID_IDirectDraw4,
-					   (LPVOID*) &lpdd4);
-      if (SUCCEEDED (ddrval))
-	{
-	  /* We have DirectDraw4 */
-	  winErrorFVerb (2, "winDetectSupportedEngines - DirectDraw4 installed\n");
-	  g_dwEnginesSupported |= WIN_SERVER_SHADOW_DDNL;
-	}
-
-      /* Cleanup DirectDraw interfaces */
-      if (lpdd4 != NULL)
-	IDirectDraw_Release (lpdd4);
-      if (lpdd != NULL)
-	IDirectDraw_Release (lpdd);
-    }
-
-  winErrorFVerb (2, "winDetectSupportedEngines - Returning, supported engines %08x\n",
-	  (unsigned int) g_dwEnginesSupported);
-}
-
-
-/*
- * Set the engine type, depending on the engines
- * supported for this screen, and whether the user
- * suggested an engine type
- */
-
-Bool
-winSetEngine (ScreenPtr pScreen)
-{
-  winScreenPriv(pScreen);
-  winScreenInfo		*pScreenInfo = pScreenPriv->pScreenInfo;
-  HDC			hdc;
-  DWORD			dwBPP;
-
-  /* Get a DC */
-  hdc = GetDC (NULL);
-  if (hdc == NULL)
-    {
-      ErrorF ("winSetEngine - Couldn't get an HDC\n");
-      return FALSE;
-    }
-
-  /*
-   * pScreenInfo->dwBPP may be 0 to indicate that the current screen
-   * depth is to be used.  Thus, we must query for the current display
-   * depth here.
-   */
-  dwBPP = GetDeviceCaps (hdc, BITSPIXEL);
-
-  /* Release the DC */
-  ReleaseDC (NULL, hdc);
-  hdc = NULL;
-
-  /* ShadowGDI is the only engine that supports windowed PseudoColor */
-  if (dwBPP == 8 && !pScreenInfo->fFullScreen)
-    {
-      winErrorFVerb (2, "winSetEngine - Windowed && PseudoColor => ShadowGDI\n");
-      pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI;
-
-      /* Set engine function pointers */
-      winSetEngineFunctionsShadowGDI (pScreen);
-      return TRUE;
-    }
-
-  /* ShadowGDI is the only engine that supports Multi Window Mode */
-  if (
-#ifdef XWIN_MULTIWINDOWEXTWM
-      pScreenInfo->fMWExtWM
-#else
-      FALSE
-#endif
-#ifdef XWIN_MULTIWINDOW
-      || pScreenInfo->fMultiWindow
-#else
-      || FALSE
-#endif
-      )
-    {
-      winErrorFVerb (2, "winSetEngine - Multi Window or Rootless => ShadowGDI\n");
-      pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI;
-
-      /* Set engine function pointers */
-      winSetEngineFunctionsShadowGDI (pScreen);
-      return TRUE;
-    }
-
-  /* If the user's choice is supported, we'll use that */
-  if (g_dwEnginesSupported & pScreenInfo->dwEnginePreferred)
-    {
-      winErrorFVerb (2, "winSetEngine - Using user's preference: %d\n",
-	      (int) pScreenInfo->dwEnginePreferred);
-      pScreenInfo->dwEngine = pScreenInfo->dwEnginePreferred;
-
-      /* Setup engine function pointers */
-      switch (pScreenInfo->dwEngine)
-	{
-	case WIN_SERVER_SHADOW_GDI:
-	  winSetEngineFunctionsShadowGDI (pScreen);
-	  break;
-	case WIN_SERVER_SHADOW_DD:
-	  winSetEngineFunctionsShadowDD (pScreen);
-	  break;
-	case WIN_SERVER_SHADOW_DDNL:
-	  winSetEngineFunctionsShadowDDNL (pScreen);
-	  break;
-#ifdef XWIN_PRIMARYFB
-	case WIN_SERVER_PRIMARY_DD:
-	  winSetEngineFunctionsPrimaryDD (pScreen);
-	  break;
-#endif
-#ifdef XWIN_NATIVEGDI
-	case WIN_SERVER_NATIVE_GDI:
-	  winSetEngineFunctionsNativeGDI (pScreen);
-	  break;
-#endif
-	default:
-	  FatalError ("winSetEngine - Invalid engine type\n");
-	}
-      return TRUE;
-    }
-
-  /* ShadowDDNL has good performance, so why not */
-  if (g_dwEnginesSupported & WIN_SERVER_SHADOW_DDNL)
-    {
-      winErrorFVerb (2, "winSetEngine - Using Shadow DirectDraw NonLocking\n");
-      pScreenInfo->dwEngine = WIN_SERVER_SHADOW_DDNL;
-
-      /* Set engine function pointers */
-      winSetEngineFunctionsShadowDDNL (pScreen);
-      return TRUE;
-    }
-
-  /* ShadowDD is next in line */
-  if (g_dwEnginesSupported & WIN_SERVER_SHADOW_DD)
-    {
-      winErrorFVerb (2, "winSetEngine - Using Shadow DirectDraw\n");
-      pScreenInfo->dwEngine = WIN_SERVER_SHADOW_DD;
-
-      /* Set engine function pointers */
-      winSetEngineFunctionsShadowDD (pScreen);
-      return TRUE;
-    }
-
-  /* ShadowGDI is next in line */
-  if (g_dwEnginesSupported & WIN_SERVER_SHADOW_GDI)
-    {
-      winErrorFVerb (2, "winSetEngine - Using Shadow GDI DIB\n");
-      pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI;
-
-      /* Set engine function pointers */
-      winSetEngineFunctionsShadowGDI (pScreen);
-      return TRUE;
-    }
-
-  return TRUE;
-}
-
-
-/*
- * Get procedure addresses for DirectDrawCreate and DirectDrawCreateClipper
- */
-
-Bool
-winGetDDProcAddresses (void)
-{
-  Bool			fReturn = TRUE;
-  
-  /* Load the DirectDraw library */
-  g_hmodDirectDraw = LoadLibraryEx ("ddraw.dll", NULL, 0);
-  if (g_hmodDirectDraw == NULL)
-    {
-      ErrorF ("winGetDDProcAddresses - Could not load ddraw.dll\n");
-      fReturn = TRUE;
-      goto winGetDDProcAddresses_Exit;
-    }
-
-  /* Try to get the DirectDrawCreate address */
-  g_fpDirectDrawCreate = GetProcAddress (g_hmodDirectDraw,
-					 "DirectDrawCreate");
-  if (g_fpDirectDrawCreate == NULL)
-    {
-      ErrorF ("winGetDDProcAddresses - Could not get DirectDrawCreate "
-	      "address\n");
-      fReturn = TRUE;
-      goto winGetDDProcAddresses_Exit;
-    }
-
-  /* Try to get the DirectDrawCreateClipper address */
-  g_fpDirectDrawCreateClipper = GetProcAddress (g_hmodDirectDraw,
-						"DirectDrawCreateClipper");
-  if (g_fpDirectDrawCreateClipper == NULL)
-    {
-      ErrorF ("winGetDDProcAddresses - Could not get "
-	      "DirectDrawCreateClipper address\n");
-      fReturn = FALSE;
-      goto winGetDDProcAddresses_Exit;
-    }
-
-  /*
-   * Note: Do not unload ddraw.dll here.  Do it in GiveUp
-   */
-
- winGetDDProcAddresses_Exit:
-  /* Unload the DirectDraw library if we failed to initialize */
-  if (!fReturn && g_hmodDirectDraw != NULL)
-    {
-      FreeLibrary (g_hmodDirectDraw);
-      g_hmodDirectDraw = NULL;
-    }
-  
-  return fReturn;
-}
+/*

+ *Copyright (C) 2001-2004 Harold L Hunt II 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 HAROLD L HUNT II 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 Harold L Hunt II

+ *shall not be used in advertising or otherwise to promote the sale, use

+ *or other dealings in this Software without prior written authorization

+ *from Harold L Hunt II.

+ *

+ * Authors:	Harold L Hunt II

+ */

+

+#ifdef HAVE_XWIN_CONFIG_H

+#include <xwin-config.h>

+#endif

+#include "win.h"

+#include "winmsg.h"

+

+/*

+ * Global variables for function pointers into

+ * dynamically loaded libraries

+ */

+FARPROC		g_fpDirectDrawCreate = NULL;

+FARPROC		g_fpDirectDrawCreateClipper = NULL;

+

+/*

+  module handle for dynamically loaded directdraw library

+*/

+static HMODULE g_hmodDirectDraw = NULL;

+

+/*

+ * Detect engines supported by current Windows version

+ * DirectDraw version and hardware

+ */

+

+void

+winDetectSupportedEngines (void)

+{

+  OSVERSIONINFO		osvi;

+

+  /* Initialize the engine support flags */

+  g_dwEnginesSupported = WIN_SERVER_SHADOW_GDI;

+

+#ifdef XWIN_NATIVEGDI

+  g_dwEnginesSupported |= WIN_SERVER_NATIVE_GDI;

+#endif

+

+  /* Get operating system version information */

+  ZeroMemory (&osvi, sizeof (osvi));

+  osvi.dwOSVersionInfoSize = sizeof (osvi);

+  GetVersionEx (&osvi);

+

+  /* Branch on platform ID */

+  switch (osvi.dwPlatformId)

+    {

+    case VER_PLATFORM_WIN32_NT:

+      /* Engine 4 is supported on NT only */

+      winErrorFVerb (2, "winDetectSupportedEngines - Windows NT/2000/XP\n");

+      break;

+

+    case VER_PLATFORM_WIN32_WINDOWS:

+      /* Engine 4 is supported on NT only */

+      winErrorFVerb (2, "winDetectSupportedEngines - Windows 95/98/Me\n");

+      break;

+    }

+

+  /* Do we have DirectDraw? */

+  if (g_hmodDirectDraw != NULL)

+    {

+      LPDIRECTDRAW	lpdd = NULL;

+      LPDIRECTDRAW4	lpdd4 = NULL;

+      HRESULT		ddrval;

+

+      /* Was the DirectDrawCreate function found? */

+      if (g_fpDirectDrawCreate == NULL)

+	{

+	  /* No DirectDraw support */

+	  return;

+	}

+

+      /* DirectDrawCreate exists, try to call it */

+      /* Create a DirectDraw object, store the address at lpdd */

+      ddrval = (*g_fpDirectDrawCreate) (NULL,

+					(void**) &lpdd,

+					NULL);

+      if (FAILED (ddrval))

+	{

+	  /* No DirectDraw support */

+	  winErrorFVerb (2, "winDetectSupportedEngines - DirectDraw not installed\n");

+	  return;

+	}

+      else

+	{

+	  /* We have DirectDraw */

+	  winErrorFVerb (2, "winDetectSupportedEngines - DirectDraw installed\n");

+	  g_dwEnginesSupported |= WIN_SERVER_SHADOW_DD;

+

+#ifdef XWIN_PRIMARYFB

+	  /* Allow PrimaryDD engine if NT */

+	  if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT)

+	    {

+	      g_dwEnginesSupported |= WIN_SERVER_PRIMARY_DD;

+	      winErrorFVerb (2, "winDetectSupportedEngines - Allowing PrimaryDD\n");

+	    }

+#endif

+	}

+      

+      /* Try to query for DirectDraw4 interface */

+      ddrval = IDirectDraw_QueryInterface (lpdd,

+					   &IID_IDirectDraw4,

+					   (LPVOID*) &lpdd4);

+      if (SUCCEEDED (ddrval))

+	{

+	  /* We have DirectDraw4 */

+	  winErrorFVerb (2, "winDetectSupportedEngines - DirectDraw4 installed\n");

+	  g_dwEnginesSupported |= WIN_SERVER_SHADOW_DDNL;

+	}

+

+      /* Cleanup DirectDraw interfaces */

+      if (lpdd4 != NULL)

+	IDirectDraw_Release (lpdd4);

+      if (lpdd != NULL)

+	IDirectDraw_Release (lpdd);

+    }

+

+  winErrorFVerb (2, "winDetectSupportedEngines - Returning, supported engines %08x\n",

+	  (unsigned int) g_dwEnginesSupported);

+}

+

+

+/*

+ * Set the engine type, depending on the engines

+ * supported for this screen, and whether the user

+ * suggested an engine type

+ */

+

+Bool

+winSetEngine (ScreenPtr pScreen)

+{

+  winScreenPriv(pScreen);

+  winScreenInfo		*pScreenInfo = pScreenPriv->pScreenInfo;

+  HDC			hdc;

+  DWORD			dwBPP;

+

+  /* Get a DC */

+  hdc = GetDC (NULL);

+  if (hdc == NULL)

+    {

+      ErrorF ("winSetEngine - Couldn't get an HDC\n");

+      return FALSE;

+    }

+

+  /*

+   * pScreenInfo->dwBPP may be 0 to indicate that the current screen

+   * depth is to be used.  Thus, we must query for the current display

+   * depth here.

+   */

+  dwBPP = GetDeviceCaps (hdc, BITSPIXEL);

+

+  /* Release the DC */

+  ReleaseDC (NULL, hdc);

+  hdc = NULL;

+

+  /* ShadowGDI is the only engine that supports windowed PseudoColor */

+  if (dwBPP == 8 && !pScreenInfo->fFullScreen)

+    {

+      winErrorFVerb (2, "winSetEngine - Windowed && PseudoColor => ShadowGDI\n");

+      pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI;

+

+      /* Set engine function pointers */

+      winSetEngineFunctionsShadowGDI (pScreen);

+      return TRUE;

+    }

+

+  /* ShadowGDI is the only engine that supports Multi Window Mode */

+  if (

+#ifdef XWIN_MULTIWINDOWEXTWM

+      pScreenInfo->fMWExtWM

+#else

+      FALSE

+#endif

+#ifdef XWIN_MULTIWINDOW

+      || pScreenInfo->fMultiWindow

+#else

+      || FALSE

+#endif

+      )

+    {

+      winErrorFVerb (2, "winSetEngine - Multi Window or Rootless => ShadowGDI\n");

+      pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI;

+

+      /* Set engine function pointers */

+      winSetEngineFunctionsShadowGDI (pScreen);

+      return TRUE;

+    }

+

+  /* If the user's choice is supported, we'll use that */

+  if (g_dwEnginesSupported & pScreenInfo->dwEnginePreferred)

+    {

+      winErrorFVerb (2, "winSetEngine - Using user's preference: %d\n",

+	      (int) pScreenInfo->dwEnginePreferred);

+      pScreenInfo->dwEngine = pScreenInfo->dwEnginePreferred;

+

+      /* Setup engine function pointers */

+      switch (pScreenInfo->dwEngine)

+	{

+	case WIN_SERVER_SHADOW_GDI:

+	  winSetEngineFunctionsShadowGDI (pScreen);

+	  break;

+	case WIN_SERVER_SHADOW_DD:

+	  winSetEngineFunctionsShadowDD (pScreen);

+	  break;

+	case WIN_SERVER_SHADOW_DDNL:

+	  winSetEngineFunctionsShadowDDNL (pScreen);

+	  break;

+#ifdef XWIN_PRIMARYFB

+	case WIN_SERVER_PRIMARY_DD:

+	  winSetEngineFunctionsPrimaryDD (pScreen);

+	  break;

+#endif

+#ifdef XWIN_NATIVEGDI

+	case WIN_SERVER_NATIVE_GDI:

+	  winSetEngineFunctionsNativeGDI (pScreen);

+	  break;

+#endif

+	default:

+	  FatalError ("winSetEngine - Invalid engine type\n");

+	}

+      return TRUE;

+    }

+

+  /* ShadowDDNL has good performance, so why not */

+  if (g_dwEnginesSupported & WIN_SERVER_SHADOW_DDNL)

+    {

+      winErrorFVerb (2, "winSetEngine - Using Shadow DirectDraw NonLocking\n");

+      pScreenInfo->dwEngine = WIN_SERVER_SHADOW_DDNL;

+

+      /* Set engine function pointers */

+      winSetEngineFunctionsShadowDDNL (pScreen);

+      return TRUE;

+    }

+

+  /* ShadowDD is next in line */

+  if (g_dwEnginesSupported & WIN_SERVER_SHADOW_DD)

+    {

+      winErrorFVerb (2, "winSetEngine - Using Shadow DirectDraw\n");

+      pScreenInfo->dwEngine = WIN_SERVER_SHADOW_DD;

+

+      /* Set engine function pointers */

+      winSetEngineFunctionsShadowDD (pScreen);

+      return TRUE;

+    }

+

+  /* ShadowGDI is next in line */

+  if (g_dwEnginesSupported & WIN_SERVER_SHADOW_GDI)

+    {

+      winErrorFVerb (2, "winSetEngine - Using Shadow GDI DIB\n");

+      pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI;

+

+      /* Set engine function pointers */

+      winSetEngineFunctionsShadowGDI (pScreen);

+      return TRUE;

+    }

+

+  return TRUE;

+}

+

+

+/*

+ * Get procedure addresses for DirectDrawCreate and DirectDrawCreateClipper

+ */

+

+Bool

+winGetDDProcAddresses (void)

+{

+  Bool			fReturn = TRUE;

+  

+  /* Load the DirectDraw library */

+  g_hmodDirectDraw = LoadLibraryEx ("ddraw.dll", NULL, 0);

+  if (g_hmodDirectDraw == NULL)

+    {

+      ErrorF ("winGetDDProcAddresses - Could not load ddraw.dll\n");

+      fReturn = TRUE;

+      goto winGetDDProcAddresses_Exit;

+    }

+

+  /* Try to get the DirectDrawCreate address */

+  g_fpDirectDrawCreate = GetProcAddress (g_hmodDirectDraw,

+					 "DirectDrawCreate");

+  if (g_fpDirectDrawCreate == NULL)

+    {

+      ErrorF ("winGetDDProcAddresses - Could not get DirectDrawCreate "

+	      "address\n");

+      fReturn = TRUE;

+      goto winGetDDProcAddresses_Exit;

+    }

+

+  /* Try to get the DirectDrawCreateClipper address */

+  g_fpDirectDrawCreateClipper = GetProcAddress (g_hmodDirectDraw,

+						"DirectDrawCreateClipper");

+  if (g_fpDirectDrawCreateClipper == NULL)

+    {

+      ErrorF ("winGetDDProcAddresses - Could not get "

+	      "DirectDrawCreateClipper address\n");

+      fReturn = FALSE;

+      goto winGetDDProcAddresses_Exit;

+    }

+

+  /*

+   * Note: Do not unload ddraw.dll here.  Do it in GiveUp

+   */

+

+ winGetDDProcAddresses_Exit:

+  /* Unload the DirectDraw library if we failed to initialize */

+  if (!fReturn && g_hmodDirectDraw != NULL)

+    {

+      FreeLibrary (g_hmodDirectDraw);

+      g_hmodDirectDraw = NULL;

+    }

+  

+  return fReturn;

+}

+

+void

+winReleaseDDProcAddresses(void)

+{

+  if (g_hmodDirectDraw != NULL)

+    {

+      FreeLibrary (g_hmodDirectDraw);

+      g_hmodDirectDraw = NULL;

+      g_fpDirectDrawCreate = NULL;

+      g_fpDirectDrawCreateClipper = NULL;

+    }

+}