Re: event_x() To Get FL_Gl_Window Coordinates
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Re: event_x() To Get FL_Gl_Window Coordinates Mike Werner Apr 03, 2013 top right image
  
> The only idea I have now is to put a large button underneath the OGL window. When I click inside the OGL window, this button will be activated and I'll get an x cord. relative to the main FLTK window and have to subtract off the upper left corner coordinates of the OGL window.

Actually, I've implemented this approach and it seems to be working.
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