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You can ask for e.g. GWL_STYLE for the desktop window,

Browse source 
but GWL_WNDPROC is off-limits for all windows if your
process didn't create it

svn path=/trunk/; revision=14709
This commit is contained in:
Gé van Geldorp 2005-04-20 07:25:14 +00:00
parent 6ba7e5d2cd
commit 7792b4bfea
1 changed files with 6 additions and 5 deletions
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11
reactos/subsys/win32k/ntuser/window.c
View file

@ -16,8 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id$
*
/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* PURPOSE: Windows
@ -26,7 +25,9 @@
* REVISION HISTORY:
* 06-06-2001 CSH Created
*/
/* INCLUDES ******************************************************************/
#include <w32k.h>
static WndProcHandle *WndProcHandlesArray = 0;
@ -3204,12 +3205,12 @@ NtUserGetWindowLong(HWND hWnd, DWORD Index, BOOL Ansi)
}
/*
* Only allow CSRSS to mess with the desktop window
* WndProc is only available to the owner process
*/
if (hWnd == IntGetDesktopWindow()
if (GWL_WNDPROC == Index
&& WindowObject->OwnerThread->ThreadsProcess != PsGetCurrentProcess())
{
SetLastWin32Error(STATUS_ACCESS_DENIED);
SetLastWin32Error(ERROR_ACCESS_DENIED);
return 0;
}