[vtkusers] KeyPressEvent Tcl

[Robert V Canning]

Hi,

      I am trying to capture when a user presses the arrow keys.  I  am
using the KeyPressEvent observer to trap for key strokes but I am unable to
find out how to test for the arrow keys in Tcl.   Is there anything like a
constant I can use?

      if {$keypressed == LeftArrow){
            dosomething {}
      }

I am using VTK 5.0.2 with Tcl 8.4.13 on a Windows XP system.

Thanks,

Bob

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