How to set up File Association and determine the file

[KLK000]

I have a program that reads files with a .tsp extension. When a user double-clicks on a .tsp file, I'd like my program to run and open the .tsp file. I've setup a File Association for .tsp files to run my program - this works. However, what code do I need to pick up the file that was clicked on? I've tried getting the command line args but it always returns no args. I suppose if I ran "myProg file.tsp", it would work but I would prefer just double-clicking on the .tsp file.

 

[ClayG]

It would be the command-line arg. It sounds like the command-line of the association does not have the argument in it - you need %1 with quotes:

Command: c:\progampathxxxx\youprogram.exe "%1"

Also switch off "DDE" unless you know how to deal with it (remove the DDE subkeys if you are reg-editing).