[jimtabor] 33863: Attempt to fix bug 3259. Use IntGdiCleanDC for error checking.

Author: jimtabor
Date: Thu Jun  5 21:59:12 2008
New Revision: 33863

URL: http://svn.reactos.org/svn/reactos?rev=33863&view=rev
Log:
Attempt to fix bug 3259. Use IntGdiCleanDC for error checking.

Modified:
    trunk/reactos/subsystems/win32/win32k/include/dc.h
    trunk/reactos/subsystems/win32/win32k/ntuser/windc.c
    trunk/reactos/subsystems/win32/win32k/objects/dc.c

Modified: trunk/reactos/subsystems/win32/win32k/include/dc.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/in…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/include/dc.h [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/include/dc.h [iso-8859-1] Thu Jun  5 21:59:12
2008
@@ -261,6 +261,8 @@
 #define  DC_UnlockDc(pDC)  \
   GDIOBJ_UnlockObjByPtr ((POBJ)pDC)
 
+extern PDC defaultDCstate;
+
 NTSTATUS FASTCALL InitDcImpl(VOID);
 PGDIDEVICE FASTCALL IntEnumHDev(VOID);
 HDC  FASTCALL DC_AllocDC(PUNICODE_STRING  Driver);

Modified: trunk/reactos/subsystems/win32/win32k/ntuser/windc.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/nt…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/ntuser/windc.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/ntuser/windc.c [iso-8859-1] Thu Jun  5 21:59:12
2008
@@ -19,7 +19,6 @@
 /* NOTE - I think we should store this per window station (including gdi objects) */
 
 static PDCE FirstDce = NULL;
-static PDC defaultDCstate = NULL;
 //static INT DCECount = 0; // Count of DCE in system.
 
 #define DCX_CACHECOMPAREMASK (DCX_CLIPSIBLINGS | DCX_CLIPCHILDREN | \
@@ -228,13 +227,11 @@
    {
      if (!(dce->DCXFlags & DCX_NORESETATTRS))
      {
-       PDC dc;
        /* make the DC clean so that SetDCState doesn't try to update the vis rgn */
        IntGdiSetHookFlags(dce->hDC, DCHF_VALIDATEVISRGN);
 
-       dc = DC_LockDc ( dce->hDC );
        // Clean the DC
-       IntGdiCopyFromSaveState(dc, defaultDCstate, dce->hDC ); // Was SetDCState.
+       if (!IntGdiCleanDC(dce->hDC)) return 0;
 
        dce->DCXFlags &= ~DCX_DCEBUSY;
        if (dce->DCXFlags & DCX_DCEDIRTY)

Modified: trunk/reactos/subsystems/win32/win32k/objects/dc.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/ob…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/objects/dc.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/objects/dc.c [iso-8859-1] Thu Jun  5 21:59:12
2008
@@ -33,7 +33,7 @@
 PGDIDEVICE pPrimarySurface = &PrimarySurface;
 static KEVENT VideoDriverNeedsPreparation;
 static KEVENT VideoDriverPrepared;
-static PDC defaultDCstate = NULL;
+PDC defaultDCstate = NULL;
 
 
 NTSTATUS FASTCALL
@@ -952,10 +952,11 @@
 IntGdiCleanDC(HDC hDC)
 {
   PDC dc;
+  if (!hDC) return FALSE;
   dc = DC_LockDc ( hDC );
+  if (!dc) return FALSE;
   // Clean the DC
   if (defaultDCstate) IntGdiCopyFromSaveState(dc, defaultDCstate, hDC );
-  DC_UnlockDc(dc);
   return TRUE;
 }