[comp.windows.x] Smooth motion?

ham@polya.Stanford.EDU (Peter R. Ham) (11/20/88)

I'm trying to make a black square follow the mouse as the user drags it
along.  I erase and draw my box into a pixmap the size of the window and then copy
the pixmap onto the window after every move.

I get alot of flickering.  It seems that the buttom of my box (on a sun4) gets
updated before the top.  Could screen refresh actually be so slow that
it isn't keeping up with the moving box?  What are the standard techniques
to make motion smooth in X?  I'm trying to learn from the public domain
window managers, but they usually only move outlines of windows, not
arbitary objects.

Peter
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Peter Ham			PO Box 3430	(415) 321-5746
MS Computer Science Student	Stanford, CA	ham@polya.stanfor.edu
Stanford University 		94309