snapshot
Description:
Snapshots the given paintable with the given width and height.
The paintable is drawn at the current (0,0) offset of the snapshot. If width and height are not larger
than zero, this function will do nothing.
Parameters:
| this |
a `GdkPaintable` |
| snapshot |
a `GdkSnapshot` to snapshot to |
| width |
width to snapshot in |
| height |
height to snapshot in |