source
Description:
The source of the constraint.
The constraint will set the [property@Gtk.Constraint:target-attribute] property of the target using the [ property@Gtk.Constraint:source-attribute] property of the source.
The source of the constraint.
The constraint will set the [property@Gtk.Constraint:target-attribute] property of the target using the [ property@Gtk.Constraint:source-attribute] property of the source.