Creates a new GtkRadioMenuItem whose child is a simple GtkLabel.
The new GtkRadioMenuItem is added to the same group as group.
If mnemonic is true the label will be
created using gtk_label_new_with_mnemonic(), so underscores in label
indicate the mnemonic for the menu item.
Since 2.4
Creates a new GtkRadioMenuItem whose child is a simple GtkLabel. The new GtkRadioMenuItem is added to the same group as group. If mnemonic is true the label will be created using gtk_label_new_with_mnemonic(), so underscores in label indicate the mnemonic for the menu item. Since 2.4