Return: The structure of the event. The structure
is still owned by the event, which means that you should not free
it and that the pointer becomes invalid when you free the event.
This function checks if @event is writable and will never return
%NULL.
Get a writable version of the structure.
Return: The structure of the event. The structure is still owned by the event, which means that you should not free it and that the pointer becomes invalid when you free the event. This function checks if @event is writable and will never return %NULL.
MT safe.