This page contains reference documentation for the SelectionRectangleOpacity member. This member sets or gets the worksheet's selection rectangle opacity.
double SelectionRectangleOpacity;
Examples are as follows:
// Set the selection rectangle opacity to 50%. a_oTopView.SelectionRectangleOpacity = 0.50; // Set the selection rectangle opacity to 25%. a_oTopView.SelectionRectangleOpacity = 0.25;
For sample code: