Passing cmd line args from one app to another that's already running?

I have an application that allows only one instance of itself to run. I'd like to pass in the command line args from a second instance that's trying to start up, then dismiss the second instance before it comes up. Is there any easy way to do this?
barrettAsked:
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dd_bConnect With a Mentor Commented:
hi

there is no direct way to send cmd parameter, b'cas u r not controling the application. The easiest way to pass parameter is  using file, whenever u start your appliction write some signeture in the file ( temp file ). & delete on exit. Using this file on start of your application always check the signeture. if signeture exits return false. This is what i did in my project.

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barrettAuthor Commented:
OK, this is interesting. Is the idea that you write the command line params to the temp file? Then send the first instance of the app, say, WM_ACTIVATEAPP - when the first instance receives the message, it could then check the temp file for params and handle accordingly. Seems this could be done with the registry as well.
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