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[win32k]

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- Fix disconnecting from a desktop when IntSetThreadDesktop gets NULL parameter

svn path=/trunk/; revision=51101
This commit is contained in:
Giannis Adamopoulos 2011-03-20 14:28:12 +00:00
parent 5177b0a967
commit 508ce4d9f8
1 changed files with 21 additions and 17 deletions
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8
reactos/subsystems/win32/win32k/ntuser/desktop.c
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@ -1798,7 +1798,7 @@ BOOL
IntSetThreadDesktop(IN HDESK hDesktop, IntSetThreadDesktop(IN HDESK hDesktop,
IN BOOL FreeOnFailure) IN BOOL FreeOnFailure)
{ {
PDESKTOP DesktopObject, OldDesktop; PDESKTOP DesktopObject = NULL, OldDesktop;
HDESK hOldDesktop; HDESK hOldDesktop;
PTHREADINFO W32Thread; PTHREADINFO W32Thread;
NTSTATUS Status; NTSTATUS Status;
@ -1809,6 +1809,8 @@ IntSetThreadDesktop(IN HDESK hDesktop,
MapHeap = (PsGetCurrentProcess() != PsInitialSystemProcess); MapHeap = (PsGetCurrentProcess() != PsInitialSystemProcess);
W32Thread = PsGetCurrentThreadWin32Thread(); W32Thread = PsGetCurrentThreadWin32Thread();
if(hDesktop != NULL)
{
/* Validate the new desktop. */ /* Validate the new desktop. */
Status = IntValidateDesktopHandle( Status = IntValidateDesktopHandle(
hDesktop, hDesktop,
@ -1818,7 +1820,7 @@ IntSetThreadDesktop(IN HDESK hDesktop,
if (!NT_SUCCESS(Status)) if (!NT_SUCCESS(Status))
{ {
DPRINT("Validation of desktop handle (0x%X) failed\n", hDesktop); DPRINT1("Validation of desktop handle (0x%X) failed\n", hDesktop);
return FALSE; return FALSE;
} }
@ -1829,6 +1831,8 @@ IntSetThreadDesktop(IN HDESK hDesktop,
return TRUE; return TRUE;
} }
}
if (!IsListEmpty(&W32Thread->WindowListHead)) if (!IsListEmpty(&W32Thread->WindowListHead))
{ {
DPRINT1("Attempted to change thread desktop although the thread has windows!\n"); DPRINT1("Attempted to change thread desktop although the thread has windows!\n");