target an app with system plugin

Is it possible to target functions in another running application with the system plugin ?

I need to call the 'mcActionShowMessageString' function in QuickTime's API. Then, I need to bring the string into NSIS for processing.

I am a bit new to this so any help is appretiated.
many thanks 🙂
g

If they are exported, you can call them using the System plug-in. Use Dependency Walker to find out which functions are exported.

thanks Kichik
that is a good lead
g