RadioMenuItem
Description:
[ CCode ( has_construct_function = false ,  type = "GtkWidget*" ) ]
public RadioMenuItem (SList<RadioMenuItem>? group)
  public RadioMenuItem (SList<RadioMenuItem>? group)
Creates a new RadioMenuItem.
Parameters:
| group | 
           the group to which the radio menu item is to be attached, or null  | 
      
Returns:
| 
           a new RadioMenuItem  |