Called anytime CaptureType changes, except to None (in which case OnLostCapture would be called).
An IGesture implementation should avoid making any visual changes until it obtains a Hard capture. Prior to this point it is uncertain if the gesture will actually be the selected one. Gestures that only ever need a soft capture can however proceed, but they shouldn't be making any direction visual changes anway.
- Fuse.Nodes 1.11.2