How to shut down another instance of an application

[spence74]

I can detect another instance of an application running by using App.PrevInstance, is there a way to force that other instance of the application to shut down?

 

[Andrzejek]

Why?

If you want just one instance of your app running, App.PrevInstance is a perfect solution - don't give user another instance.

Why do you want to start another and stop previous?

---- Andy

 

[Schroeder]

No time to post an example right now but, I believe you can use the PostMessage API, passing WM_CLOSE (&H10) for the wMsg parameter. Use EnumWindows along with a callback function that uses GetWindowTextLength and GetWindowText to identify and acquire a handle for the appropriate window.

There may be a better (safer) way to identify the correct window but I don't know what it is.

 

[strongm]

We've covered this in the past. Try doing a keyword search in this forum. If you can't find anything just shout and I'm sure we'll be able to help out.