Background: In a particular durr-brain day yesterday, I was struggling to get a small windowed OSG app working properly. The problem with it was that OSG was not processing the keyboard and mouse events for the window hosting the OSG viewer. As it turns out, this was simply the result of me ONLY calling viewer->frame from within the paint function of the window. Eventually, in a flash of common sense, I decided to also call viewer->frame from within a timer function running at 60Hz, and now it is working nicely.
The Question: It occured to me to wonder.. "Why do I need to call 'frame' in order to process user events?" If I happen to know that my view only needs updating as a RESULT of a user event, how do I process the event without updating the view? Do I have to hammer the CPU&GPU with calls to frame while waiting for user input? In a nutshell, is it possible to get OSG to process events without calling frame? Or is it something I shouldn't want to do? Chris.
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