open multiple file in a single instance of an external application

[saretta000]

Dear all,
I have already asked you a question, and you kindly have answered fast and solved my problem! thenks so much for doing this.
Now I have another trouble: is it possible to open multiple files in a single instace of an external applicaiton? using shell function I can open one instance for each file to be open... but if I need, for example, to open multiple images with only one instance of my images_viewer.exe? how can I do?
Thanks in advance,
sara.

 

[JohnH]

Check the Application option "make single instance application" and handle the Application Startup/StartupNextInstance events.