When my openGL application running in fullscreen mode using Vista OS, and turn on the IME(stuff to input Chinese), after I have typed in some key and a Chinese character constructed, the whole screen will become black, showing up the IME window, then return the screen of my application.
This situation will not occur if I use D3D as output device, just the IME window show up and disappear (a little flick of the IME window).
What will be the reason of using openGL being flick?