Creates a new GtkRadioButton. To be of any practical value, a widget should then be packed into the radio button.
an existing radio button group, or NULL if you are creating a new group. [element-type GtkRadioButton][allow-none]
ConstructionException GTK+ fails to create the object.
See Implementation
Creates a new GtkRadioButton. To be of any practical value, a widget should then be packed into the radio button.