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implemented LockWindowStation() and UnlockWindowStation() (forgot to commit these changes in my previous commit)

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svn path=/trunk/; revision=9268
This commit is contained in:
Thomas Bluemel 2004-05-01 17:06:55 +00:00
parent 56ee4446f0
commit 9e1f523308
1 changed files with 67 additions and 7 deletions
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74
reactos/subsys/win32k/ntuser/winsta.c
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: winsta.c,v 1.57 2004/04/09 20:03:19 navaraf Exp $
* $Id: winsta.c,v 1.58 2004/05/01 17:06:55 weiden Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -740,31 +740,91 @@ NtUserSetProcessWindowStation(HWINSTA hWindowStation)
/*
* NtUserLockWindowStation
*
* Locks switching desktops. Only the logon application is allowed to call this function.
*
* Status
* @unimplemented
* @implemented
*/
BOOL STDCALL
NtUserLockWindowStation(HWINSTA hWindowStation)
{
UNIMPLEMENTED
PWINSTATION_OBJECT Object;
NTSTATUS Status;
return 0;
DPRINT("About to set process window station with handle (0x%X)\n",
hWindowStation);
if(PsGetWin32Process() != LogonProcess)
{
DPRINT1("Unauthorized process attempted to lock the window station!\n");
SetLastWin32Error(ERROR_ACCESS_DENIED);
return FALSE;
}
Status = IntValidateWindowStationHandle(
hWindowStation,
KernelMode,
0,
&Object);
if (!NT_SUCCESS(Status))
{
DPRINT("Validation of window station handle (0x%X) failed\n",
hWindowStation);
SetLastNtError(Status);
return FALSE;
}
Object->Flags |= WSS_LOCKED;
ObDereferenceObject(Object);
return TRUE;
}
/*
* NtUserUnlockWindowStation
*
* Unlocks switching desktops. Only the logon application is allowed to call this function.
*
* Status
* @unimplemented
* @implemented
*/
BOOL STDCALL
NtUserUnlockWindowStation(HWINSTA hWindowStation)
{
UNIMPLEMENTED
PWINSTATION_OBJECT Object;
NTSTATUS Status;
BOOL Ret;
return FALSE;
DPRINT("About to set process window station with handle (0x%X)\n",
hWindowStation);
if(PsGetWin32Process() != LogonProcess)
{
DPRINT1("Unauthorized process attempted to unlock the window station!\n");
SetLastWin32Error(ERROR_ACCESS_DENIED);
return FALSE;
}
Status = IntValidateWindowStationHandle(
hWindowStation,
KernelMode,
0,
&Object);
if (!NT_SUCCESS(Status))
{
DPRINT("Validation of window station handle (0x%X) failed\n",
hWindowStation);
SetLastNtError(Status);
return FALSE;
}
Ret = (Object->Flags & WSS_LOCKED) == WSS_LOCKED;
Object->Flags &= ~WSS_LOCKED;
ObDereferenceObject(Object);
return Ret;
}
/*