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Use SetDCOwnerEx, this will allow for gracefull errors when changing ownership of the DCs.

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svn path=/trunk/; revision=33812
This commit is contained in:
James Tabor
2008-06-01 16:21:38 +00:00
parent 457aee023d
commit 8a24ff76e0
1 changed files with 4 additions and 10 deletions
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reactos/subsystems/win32/win32k/ntuser/windc.c
+4 -10
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@@ -133,12 +133,8 @@ DceAllocDCE(PWINDOW_OBJECT Window OPTIONAL, DCE_TYPE Type)
}
else
{
PDC dc = DC_LockDc ( pDce->hDC );
DPRINT("FREE DCATTR!!!! NOT DCE_WINDOW_DC!!!!! hDC-> %x\n", pDce->hDC);
MmCopyFromCaller(&dc->Dc_Attr, dc->pDc_Attr, sizeof(DC_ATTR));
DC_UnlockDc( dc );
DC_FreeDcAttr(pDce->hDC); // Free the dcattr!
DC_SetOwnership(pDce->hDC, NULL); // This hDC is inaccessible!
IntGdiSetDCOwnerEx( pDce->hDC, GDI_OBJ_HMGR_NONE, FALSE);
}
if (Type == DCE_CACHE_DC)
@@ -262,8 +258,8 @@ DceReleaseDC(DCE* dce, BOOL EndPaint)
}
}
DPRINT("Exit!!!!! DCX_CACHE!!!!!! hDC-> %x \n", dce->hDC);
DC_FreeDcAttr(dce->hDC); // Free the dcattr.
DC_SetOwnership(dce->hDC, NULL); // Set hDC inaccessible mode.
if (!IntGdiSetDCOwnerEx( dce->hDC, GDI_OBJ_HMGR_NONE, FALSE))
return 0;
dce->pProcess = NULL; // Reset ownership.
}
return 1;
@@ -565,9 +561,7 @@ UserGetDCEx(PWINDOW_OBJECT Window OPTIONAL, HANDLE ClipRegion, ULONG Flags)
{
DPRINT("ENTER!!!!!! DCX_CACHE!!!!!! hDC-> %x\n", Dce->hDC);
// Need to set ownership so Sync dcattr will work.
DC_SetOwnership( Dce->hDC, PsGetCurrentProcess());
DC_AllocateDcAttr( Dce->hDC ); // Allocate new dcattr
DCU_SynchDcAttrtoUser( Dce->hDC); // Copy data from dc to dcattr
IntGdiSetDCOwnerEx( Dce->hDC, GDI_OBJ_HMGR_POWNED, FALSE);
Dce->pProcess = PsGetCurrentProcess(); // Set the temp owning process
}
return(Dce->hDC);