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Mac os X Change resolution back - and window resizing problem

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Hy there. I have a problem with changing resolution back to initial resolution on mac os x. I change my resolution like this: size_t lastResHeight = glutGet(GLUT_WINDOW_HEIGHT); size_t lastResWidth = glutGet(GLUT_WINDOW_WIDTH); size_t bitsPerPixel = 32 ; size_t width = 640 ; size_t height = 480 ; CFDictionaryRef bestMode ; boolean_t exactMatch ; bestMode = CGDisplayBestModeForParameters(kCGDirectMainDisplay,bitsPerPixel,width,height,&exactMatch) ; CGDisplaySwitchToMode(kCGDirectMainDisplay, bestMode) ; ........................................................ and when i want to change back the resolution i do this: ........................................................ glutPositionWindow(0,0); glutReshapeWindow(640,480); CFDictionaryRef lastMode ; boolean_t exact ; lastMode = CGDisplayBestModeForParameters(kCGDirectMainDisplay,32,lastResWidth,lastResHeight,&exact) ; CGDisplaySwitchToMode(kCGDirectMainDisplay,lastMode) ; the problem is that my window is all squash up. So my game doesnt show all the graphics. How can i resize my window to 640x480. And also how can i tell my window not to have a zoom window (that + neer the close button in left top corner). I know there is a SizeWindow function but i dont know which header to include to work. glutReshape... doenst work for me Thanks!

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When you reshape the window, are you calling glViewport to make sure GL is rendering to the new window size?

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