(GDI Call) EnumDisplayDevices Failing for WTS Api
anonymous_at_discussions.microsoft.com
Date: 12/18/03
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Date: Thu, 18 Dec 2003 01:44:47 -0800
Ok, let me phrase this differently. The Caller
is a process as in CreateProcessAsUser, and the
specific user i changed to act as TCB. cant get
much higher than that.
But yet, if the sessionID is anything other than
0, i cannot do the enum - even if i do an
OpenWindowStation, SetProcessWindowStation,
OpenInputDesktop and what not.
The service thread that is calling CreateProcessAsUser
is also Doing
BOOL Retval=SetTokenInformation(hToken, TokenSessionId,
&dwSessionId,sizeof(DWORD)) ;
where dwSessionId=0, and hToken is valid. Retval==TRUE
upon return.
However, EnumDisplayDevices is still not working, returning
null promptly on first call if sessionID is not Zero...
I am pretty much at my wits end now.....
in XP Environment (fast user). ie, always returning
zero at first shot if sessionID!=0. Tried
a bunch of stuff, no luck. My posting below from
the gdi newsgroup reproduced :
>-----Original Message-----
>Yes, this call is returning No devices.
>i am loadlibbling a dll. However, before that
>i do call AttachtoDesktop.
>help appreciated.
>.
>
.
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