Marking a Selection with a Rubberband
You can mark a selection area by using a rubberband, which is a one-pixel rectangle on the display surface.
The following property lets you automate the rubberband so that it appears whenever the mouse is moved with the left button down:
Alternatively, you can control the rubberband by adding code to the mouse events. You can use the following method to set the size and position of the rubberband:
You can use the following property to change the visibility of the rectangle, effectively turning it on or off:
You can use the following properties to get or set the current size and position of the rectangle:
The following event occurs before the MouseUp event when the rubberband is turned on: