Base input event type for mouse events. Stores general mouse events information. $DOCS_URL/tutorials/inputs/inputevent.html The mouse button mask identifier, one of or a bitwise combination of the [enum MouseButton] button masks. The global mouse position relative to the current [Viewport] when used in [method Control._gui_input], otherwise is at 0,0. The local mouse position relative to the [Viewport]. If used in [method Control._gui_input], the position is relative to the current [Control] which is under the mouse.