Hi Robert and others -- I'm pretty good with OpenGL and 3D stuff, but when it comes to GUI interactions I'm a little week. I'm hoping someone can give me some pointers on what I might be doing wrong here. I've got an event callback attached to some node in my scene graph that looks for DRAG events. It returns true when it handles one so that the camera manipulator doesn't also attempt to handle the DRAG. This works great when I have a TrackballManipulator set as the Viewer's CameraManipulator. However, if I switch over to a custom MatrixManipulator that I've created, the event appears to get passed to my custom manipulator and it. too, processes the DRAG event -- even though my event callback is returning true. Like I said, the TrackballManipulator properly ignores the DRAG, so the problem must be in my custom matrix manipulator (and not in my event callback). Any idea what I might be doing wrong? Sorry this is so open-ended. I'm hoping someone else has encountered something similar and can reply from experience. Thanks, Paul Martz Skew Matrix Software LLC http://www.skew-matrix.com <http://www.skew-matrix.com/> +1 303 859 9466
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