🚀 go-pugleaf

"Fred W." <fwestphal@tomtec.com> schrieb im Newsbeitrag
news:40DC8965.698A31F6@tomtec.com...
> Is it possible to get the the "handle to a window" that is running in
> another session in Windows XP? I need to "SendMessage" a WM_COPYDATA
> message to a process running in Session 0 from the session for the
> current logged in user. Previously, I would use "FindWindow" in Window
> 2000 and below to send the message, but now under XP that scheme no
> longer works since XP has added Fast User Switching with Multiple
> Desktop Sessions and  it appears that each session maintains a seperate
> WIndows List.

you need several functions from Win32 API :

EnumWindowStations
OpenWindowStation
EnumDesktops
SetProcessWindowStation
OpenInputDesktop / OpenDesktop
EnumDesktopWindows

these functions will allow you to get the handle to a window located on a
different session / desktop.

MS states in the help for these desktop / windowstation functions :
This overview describes the new window station and desktop functionality,
and is primarily intended for developers of Win32 services. Developers of
typical applications that will be run by the logged-on user do not need to
be concerned about window stations and desktops.

I am NOT sure whether you can do a WM_COPYDATA to a different WindowStation
/ a different Desktop... though it should be possible after switching to the
relevant WindowStation / Desktop :-)
take a look at MSDN...


HTH

Yahia