[vtkusers] Mac Child Window Handling

[Karl Merkley]

I'm looking at vtkCarbonRenderWindow and trying to figure out what 
should happen if I have a vtk window that is a child of another window 
under Mac OS X.  This works nicely on both Windows and Linux but it  is 
not working correctly on the Mac.  In doing some research, it looks 
like the Mac (AGL) method of handling child windows is very different 
and that perhaps this has not been completely implemented yet in the 
vtk Carbon stuff.  There is a comment from the latest CVS snapshot that 
says "if we are a child we'll need to do something smarter."  I don't 
know if that means that the code that is there is doing something 
smarter or if more needs to be done to make it smarter.

Has anybody looked at this in detail?  Any basic ideas on what should 
be done?   I'm willing to give a crack at making it work.  It appears 
that at the very least AGL_BUFFER_RECT needs to be set for a child 
window.  It might also be necessary (or more efficient) to look at 
AGL_CLIP_REGION to set the clipping area.   Does anybody have any 
experience or guidance with this?  Am I making this harder than it 
really is?   I'm looking at examples and feeling my way along.

	TIA,
		Karl

Karl G. Merkley
karl at elemtech dot com