True True 6 6 6 6 True True never never in True False True True GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_STRUCTURE_MASK True True Click the outline style that you want to use. Displays the different styles that you can apply to a hierarchical list. Up to nine outline levels in a list hierarchy are supported.