Expose events are sent to windows when they move between the un-exposed and exposed states.
An exposed window is potentially visible to the user. If the window is moved off screen, is made totally obscured by another window, is minimized, or similar, an expose event is sent to the window, and isExposed() might change to false.
Expose events should not be used to paint. Handle
The event handler
exposeEvent() receives expose events.
- Return type
This function is deprecated.
Returns the window area that has been exposed. The region is given in local coordinates.
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