Steverino -
Sure! To let the user interact with the rectangle, you have to make it part of the viewer region instead of an overlay, like
CWIMAQViewer1.Regions.DefaultRegionColor = vbBlue
CWIMAQViewer1.Regions.AddRectangle rrect
CWIMAQViewer1.Tool = cwimaqToolSelection
Greg Stoll
Vision R&D
National Instruments
Greg Stoll
LabVIEW R&D