Default event handling for this widget. Call this only after drawing it into a rectangle and only if the event ought to be dispatched to it (which you determine however you want; you could dispatch all events to it, or perhaps filter some out too)
true if it should be redrawn
See Implementation
Default event handling for this widget. Call this only after drawing it into a rectangle and only if the event ought to be dispatched to it (which you determine however you want; you could dispatch all events to it, or perhaps filter some out too)