Mouse event

A mouse event identifier is passed to the canvas OnEvent callback. The state of the mouse buttons (and some keys) can be examined by calling the following functions.

mouse-event-button

mouse-event-button-down

mouse-event-control-down

mouse-event-dragging

mouse-event-left-down

mouse-event-left-up

mouse-event-is-button

mouse-event-middle-down

mouse-event-middle-up

mouse-event-right-down

mouse-event-right-up

mouse-event-shift-down