set_sort_func

Sets the comparison function used when sorting to be sort_func.

If the this has the sort type set to CUSTOM then the chooser will sort using this function.

To the comparison function will be passed two RecentInfo structs and sort_data ; sort_func should return a positive integer if the first item comes before the second, zero if the two items are equal and a negative integer if the first item comes after the second.

Parameters:

this	a RecentChooser
sort_func	the comparison function
data_destroy	destroy notifier for sort_data, or null
sort_data	user data to pass to sort_func, or null