Description

This variable returns the last mouse button that was pressed and can return any of the special mouse constants (you may also set this variable to one of the constants too). The constant returned (or being set) will be one of the following:

Constant	Description
mb_left	The left mouse button
mb_middle	The middle mouse button (this may not be valid for all target platforms)
mb_right	The right mouse button
mb_none	No mouse button

Syntax:

mouse_lastbutton;

Returns:

Constant

Example:

if mouse_lastbutton = mb_left
   {
   x -= 1;
   }

This moves the current instance left if the last button pressed was the left mouse button.