A radio column contains radio button tiles, only one of which can be selected at a time.
Supported Platforms: Windows only
: radio_column { alignment children_alignment children_fixed_height children_fixed_width fixed_height fixed_width height label width }
Radio columns present the user with a fixed set of mutually exclusive choices. Radio columns, unlike ordinary columns, can be assigned an action.
A quoted string containing the key of the currently selected radio button (the one whose value is "1").