I'm writing a 3D rendering package (simple little thing for a programming class) and I would like to adjust the intensity of light sources via a hScroll bar. No big deal. Using the click event, it adjusts the proper values and immediately repaints the image. I'm doing this runnign Win95 with 32bit VB4... SLOW... I can deal with SLOW. But I'd also like to use the scroll event so when I slide the little scroll bar thumb, it adjusts values, but won't repaint the screen until the user lest go of the mouse button. If I repaint it every time the user scrolls, it goes from SLOW to SLOOOOOOOW. How can I track the mouse events?