Removing window shape region

[Andreas Falkenhahn]

> On Tue, 2010-05-11 at 14:25 +0200, Andreas Falkenhahn wrote:
>> Hi,
>>
>> is it possible to remove a shape region that was installed using
>> XFixesSetWindowShapeRegion()? I'm not interested in simply setting the
>> shape region to an opaque region matching the window's bounds. I want to
>> remove the shape region completely. I.e. after removal, the window
>> should
>> act as if XFixesSetWindowShapeRegion() had never been called on it. Is
>> that possible? I tried passing "None" as region, but that doesn't seem
>> to
>> work.
>
> The server code certainly accepts (and does something different for)
> None as the Region.  Do you have a testcase, or can you better define
> what "doesn't seem to work" means?

What I meant was that calling XFixesSetWindowShapeRegion() with a None
region didn't do anything at all. The old region simply stayed in place.

Is there any documentation what is supposed to happen when passing a None
region? Does passing None mean "remove current window shape region" or
what is None supposed to do?

Greets,

Andreas