Creates a new #GtkRadioToolButton, adding it to group. The new #GtkRadioToolButton will contain an icon and label from the stock item indicated by stock_id.
an existing radio button group, or null if you are creating a new group
the name of a stock item
The new #GtkRadioToolButton
Deprecated: Use gtk.radio_tool_button.RadioToolButton.new_ instead.
Creates a new #GtkRadioToolButton, adding it to group. The new #GtkRadioToolButton will contain an icon and label from the stock item indicated by stock_id.