Ben Combee wrote: >Try adding a call to WinGetDrawWindow immediately before >this call and see if it's NULL. If so, the problem lies >before the SclSetScrollBar call. You're looking for >anything that might be invalidating the draw window
Good hint, Ben. I was pretty sure that it had something to do with this, but my applications so far have never directly had to mess with draw windows, so I don't know that much about it. I'm not sure exactly what to look for. Can you tell me what types of things might "invalidate the draw window"? Specific API calls, or some sort of side-effect of a call? Thanks. Doug Gordon -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
