Uninstall: How to make sure the app isn't running?

[gte806e]

During some user testing It seems that some users acutally tried to uninstall the application while it was running and they though that it had successfully done so.

How can I write a script that will first kill the application then uninstall? I know winXP has taskkill but this needs to work on 9x as well.

Thanks in advance,

Jesse

[Anders]

if the app's window has a unique classname and/or title u could check for that, or create a mutex.

kill /check for running exe:
http://nsis.sourceforge.net/archive/viewpage.php?pageid=271
http://nsis.sourceforge.net/archive/viewpage.php?pageid=483

[Joost Verburg]

Creating a mutex is the best solution, window detection is not always reliable.