FAnimationViewportClient::TrackingStarted

Virtual void ProcessClick(class FSceneView& View, class HHitProxy* HitProxy, FKey Key, EInputEvent Event, uint32 HitX, uint32 HitY) override; virtual bool InputWidgetDelta( FViewport* Viewport, EAxisList::Type CurrentAxis, FVector& Drag, FRotator& Rot, FVector& Scale ) override;