- source Sometimes the event originates from a different window
- than self, but you still want to catch it in self. (For
- example, a button event delivered to a frame.) By
- passing the source of the event, the event handling
- system is able to differentiate between the same event
- type from different controls.
+ :param source: Sometimes the event originates from a
+ different window than self, but you still
+ want to catch it in self. (For example, a
+ button event delivered to a frame.) By
+ passing the source of the event, the event
+ handling system is able to differentiate
+ between the same event type from different
+ controls.