I have the following problem: Inside a service I want to post a registered windows message to all desktop windows. Now, that is no problem, everything works. But only if the service starts up as the system user. When I want to send a message to user A (that is logged in) with the service that is started as user B. Then the message is send but not received by the application of user A.
I was wondering if anybody can help me, I have used BroadcastMessage and Postmessage, but I don't find any correct parameter I can pass.
Thanx in advance