is invoked when a mouse button has been pressed on a window.
Returns
When false is returned the other handlers are called and a
following handling of the event by the broadcaster takes place.
Otherwise, when true is returned, no other handler will be
called and the broadcaster will take no further actions
regarding the event.
is invoked when a mouse button has been released on a window.
Returns
When false is returned the other handlers are called and a
following handling of the event by the broadcaster takes place.
Otherwise, when true is returned, no other handler will be
called and the broadcaster will take no further actions
regarding the event.