void gtk_numeric_sorter_set_expression ( GtkNumericSorter* self, GtkExpression* expression )
Sets the expression that is evaluated to obtain numbers from items.
Unless an expression is set on
self, the sorter will always
compare items as invalid.
The expression must have a return type that can be compared
numerically, such as
|The argument can be |
|The data is owned by the caller of the function.|