[vtkusers] Mac Child Window Handling

[Glen Lehmann]

Hi Karl,

You are correct, child widgets are not supported yet.  Carbon itself 
does not support sub-windows within a Carbon window; however, the 
HIToolbox was introduced in OS X 10.2 to provide a means of supporting 
a hierarchal window structure via HIView.

Eventually, each vtkCarbonRenderWindow should be contained inside a 
HIViewObject and multiple HIViewObjects could be supported.

AGL_BUFFER_RECTs are the way to go for now.

Cheers,
Glen

On Oct 15, 2004, at 11:52 AM, Karl Merkley wrote:

>
> 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
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