change overlapping window update region

[Vadim Zeitlin]

On Thu, 14 Dec 2006 14:04:28 +0100 Robert Roebling wrote:

RR> >  Actually you shouldn't because overlapping windows are just not
RR> > supported by wxWidgets at all. 
RR> 
RR> What do you mean? Maybe not translucent overlapping windows, but
RR> simple windows/controls can overlap (no matter how wrong that
RR> will look),

 They can overlap but there is no guarantee whatsoever that this will look
correctly. IOW, their relative Z-order is undefined and we never supported
this in the past and I don't see why should we do it in the future (of
course, if anyone wants to put in the necessary effort to implement proper
support for this on all platforms I wouldn't object but I'm absolutely not
going to do it myself).

 Regards,
VZ

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