RE: Apps that starts from a service hang after logout

From: Richard Laning (RichardLaning_at_discussions.microsoft.com)
Date: 02/02/05 

Date: Wed, 2 Feb 2005 10:23:01 -0800

Hi Wayne,

This seems a question for the msdn / programmers newsgroups as this is an
application specific programming issue.

Richard

"Wayne L. Phares" wrote:

> This is a strange one...
>
> We have a program that, among other things, allows a user to schedule other
> apps to run via a simple scheduler. This program runs as a Windows service.
> It is a java program and is installed as a service via a java service
> program. the apps that it launches have GUIs that need to display on the
> console (in case of an error dialog the user has to be able to click a
> button) as the "Interact with desktop" check box in the service properties
> is checked and the service is run by the SYSTEM user. The OS is Windows
> 2KServer.
>
> Here is what is happening:
>
> The GOOD: If the service starts the app while no one is logged in, it will
> run correctly and exit. also it will work if it starts and finishes while
> loged in.
>
> The BAD: If the service starts the app while someone is logged in or not (if
> not then the GUI shows up at the time of login) and then the user selects
> START->LOGOFF (or any other method of logging off), the app continues to run
> and finishes all the processing it set out to do, BUT...the app never exits.
> If the user logs back in the GUI is visible to the user and even responds to
> mouse clicks, but WILL NOT CLOSE.
>
> It makes sense the the APP continues to run becuase it is owned by SYSTEM
> and not the user so logging off should not close it.
>
> The app that is causing the problem is written in Visaul Basic 6 and is
> calling "unload me", I even tried "end" and it still does not go away.
>
> So, if the VB app that is lauched by the service that interacts with the
> desktop and the user logs off while running it never exits.
>
> My strange theory is that the VB app no longer has a handle to the screen to
> remove the GUI.....Please help!!
>
> -Wayne
>
>
>