[PATCH 2/4] Rename region macros to mixed case and remove screen argument

[Keith Packard]

On Wed, 26 May 2010 16:54:44 +0100, Daniel Stone <daniel at fooishbar.org> wrote:

> Can we just man up and use NULL? (Or if we don't, define NullRegion to
> be NULL instead of 0.)

NullRegion has the advantage of providing both visual and compiler type
checking in functions containing numerous arguments. I've found that
useful at times.

-- 
keith.packard at intel.com
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