Robert,

You also have to create different actions for the application to perform on a file. If you just need to open it, create an action called "Open" and have the value of the action set to something like "C:\Program Files\MyAppFolder\MyApp.EXE %1". For instance, notepad has the "open" action set to "C:\WINNT\system32\NOTEPAD.EXE %1" (at least on my machine). You can view these settings in "Advanced" dialog in Tools/Options/Folder Settings/File Types in explorer.

Hope this helps

>Hello,
>I have an application that can open different files with different extensions.
>Examples: .rte .ext .pra .prd .inp etc.…
>Usually I open a file depending on its extension. I want that the user could open his own files by double clicking on each of them, alike MS Word file or txt file.
>In my windows OS I assigned the extension .rte and .ext to my application. So when I click on one of these files, my application opens but not the file. What I have to do to open the file as well? Please Help.
>Regards
>Robert