🚀 go-pugleaf

I have an application which reads a gray-scale image and displays it.
Now, I also want to draw things on top of it, a la John Madden.  I've
created a separate GC to do this on, and things like XDrawLine and
XFillRectangle work very nicely.  Erasing a point or a box is easy;
just XPutImage from the internal image to the screen.  Is there a way
to analogously erase a line?  Setting the GC funcion to clear or XOR
and redrawing the line leaves a blank trail, which is obviously
unacceptable.  Am I going to be forced to abandon XDrawLine and
compute the points myself so that they can later be erased with
XPutImage?

This is probably trivial, so please respond by email.  Thanks very
much.

-- 
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Nick Street				| "Go Make Plans"
street@cs.wisc.edu			|	-Bob
husband, father, grad student, liberal, Cub fan