Enums
Value | Symbolic name | Description |
| 0 | GTK_SHADOW_NONE | No shadow is displayed, resulting in a two-dimensional appearance. |
| 1 | GTK_SHADOW_IN | Displays dark shadow on left and upper sides of the widget, resulting in the appearance of the widget being lower than its surrounding area. |
| 2 | GTK_SHADOW_OUT | Displays dark shadow on right and lower sides of the widget, resulting in the illusion that the widget is raised above its surrounding area. |
| 3 | GTK_SHADOW_ETCHED_IN | Displays the appearance of sunken detail. |
| 4 | GTK_SHADOW_ETCHED_OUT | Displays the appearance of raised detail. |