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VB Forum / General 2 / April 2004Multiple Instances
I'm trying to write a screen saver. My understanding is that it's actually an .exe that you change they extension to .scr. The problem is that when Windows (I'm on 98SE) runs the screen saver, multiple instances seem to execute. It's as though Windows does not know that a screen saver is already running. Is there something else that I have to do to let Windows know that it's a screen saver and not to run another copy of the program? Or is there some way to detect that the program is already running and not allow other copies to run? Thanks for any help you can give. > I'm trying to write a screen saver. My understanding is that it's > actually an .exe that you change they extension to .scr. [quoted text clipped - 7 lines] > > Thanks for any help you can give. You must subclass your screensaver window, and catch the WM_SYSCOMMAND message. If the WPARAM is SC_SCREENSAVE, do not call DefWindowProc(). Murphy www.ConstantThought.com >You must subclass your screensaver window, and catch the WM_SYSCOMMAND >message. If the WPARAM is SC_SCREENSAVE, do not call DefWindowProc(). I'm afraid you're waaaaay beyond my meager skills. Can you give me the code that I must use to do that? Sorry to be such a novice. If you want your application to run single instance, try the property : App.PrevInstance M. B. > I'm trying to write a screen saver. My understanding is that it's > actually an .exe that you change they extension to .scr. [quoted text clipped - 7 lines] > > Thanks for any help you can give. |
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