Creates a closure to invoke the function called function_name.
This is using the create_closure() implementation of builder's gtk.builder_scope.BuilderScope.
If no closure could be created, null will be returned and error will be set.
name of the function to look up
closure creation flags
Object to create the closure with
A new closure for invoking function_name
Creates a closure to invoke the function called function_name.
This is using the create_closure() implementation of builder's gtk.builder_scope.BuilderScope.
If no closure could be created, null will be returned and error will be set.