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