I need help with a small problem I can't seem to figure out. I'm drawing a grid and the width and height of each cell is changeable. Nothing is changed until I call the Update( QRECT) function. I came up with a quick solution to call it along with my drawGrid() function, but now it chokes the cpu since it is called all the time. A couple of segmentation faults later, I turned to you guys. Is there any way update the scene when it needs to be?