Sets the match function for completion to be func. The match function is used to determine if a row should or should not be in the completion list. Since 2.4
the GtkEntryCompletionMatchFunc to use
user data for func
destroy notify for func_data.
See Implementation
Sets the match function for completion to be func. The match function is used to determine if a row should or should not be in the completion list. Since 2.4