[vwnc] Alternating keyboard control in an application

Hi,

I am trying to have a window in which there are 2 widgets which would  
get alternate input from the keyboard. One of them is an OpenGL  
visualization pane and the other a code editor (which uses a subclass  
of HighlightingTextEditorController). What I want to have is that  
whenever the visualization is active (clicked on it), the keys pressed  
to control it for navigation do not appear in the code editor.

I would appreciate any hints on how to do that.

Thanks,
Richard Wettel
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