I've already tried something like this and it just does not work like I want it to.
Enforced with a sequence structure I do this: 1) put up a message saying "Updating" 2) dump the updated data to the display 3) clear the message What I see on the CRT is this: 1) a message saying "Updating" 2) the message quickly goes away 3) several seconds later the image changes. My kludge/workaround is to add a variable delay before the message is cleared. The delay is based on the image size and some empirically-derived constants.
