GdkVisibilityState
Specifies the visiblity status of a window for a GdkEventVisibility.
Value | Symbolic name | Description |
| 0 | Gdk::VISIBILITY_UNOBSCURED | The window is completely visible. |
| 1 | Gdk::VISIBILITY_PARTIAL | The window is partially visible. |
| 2 | Gdk::VISIBILITY_FULLY_OBSCURED | The window is not visible at all. |