Action generated when the mouse moves.
int function(Ihandle *ih, int x, int y, char *status); [in C] elem:motion_cb(x, y: number, status: string) -> (ret: number) [in Lua]
ih:
identifier of the element that activated the
event.
x, y:
position in the canvas where the event has
occurred, in pixels.
status: status of mouse buttons and certain keyboard keys at
the moment the event was generated. The same macros used for
BUTTON_CB can be used for this status.