Drawing on pixmap good just because "expose event" handled faster?

[Chris Seberino <seberino spawar navy mil>]

Is the only reason why drawing on pixmaps is preferred because
portion of window to be redrawn can be done faster
with regards to an expose event???

Is the sole purpose of inventing a pixmap object????
scribbl.c in GTK+ tutorial has a pixmap object to
be global I think and defined to be static.
This beast does not look very elegant and so I was
wondering why it was necessary and why or if there
was a way to simplify code even more.

By the way, expose event just means that window was uncovered
and needs be redrawn right?? Just checking.

Thanks,

Chris


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