Access: Read Only
The position of the selection bound.
The selection bound is the end of the selected region that is not the cursor. For example, if the characters PHP-GTK were selected by dragging the mouse from left to right, the cursor would be after the K and the selection-bound would be before the first P. In this case, if the selected region represented the entire text of the label, selection-bound would be 0.
Defaults to 0.