I know this has been answered before, but I am not sure how to search for it....
I want to associate a file type with my program, so that when the user double-clicks on a file of that type, my program runs and opens that file. In addition, I only want ONE instance of my app to run at a time. So, if my app is running, and the user double-clicks on the file, my app comes to the front and opens that file. My app is already MDI, so it can open multiple files at a time...
Can someone point me to an example?

thanx