Hey guys, I've got an application that uses openGL to display a picture. Another window is then used to toggle what should be displayed. So i update a variable in the main execution loop and put an if else statement to tell it what to render - acts like a toggle. However I've noticed that the display doesn't get updated unless the window is in focus, or i hover my mouse of it. I there a way to forcefully redraw the window? I've put a printf statement in the main glut loop only to find that its not actually been called until the window is back in focus from a glutPostRedisplay() [Edited by - chippiejnr on April 23, 2008 10:40:45 AM]

But surely that will keep refreshing the window even if its not dirty?

glutVisibilityFunc perhaps. It will tell your if your window is exposed or covered.