public int AddTransitionBetweenKeyframes(IUIAnimationVariable *variable, IUIAnimationTransition *transition, [NativeTypeName("UI_ANIMATION_KEYFRAME")] UI_ANIMATION_KEYFRAME *startKeyframe, [NativeTypeName("UI_ANIMATION_KEYFRAME")] UI_ANIMATION_KEYFRAME *endKeyframe)
 {
     return(((delegate * unmanaged <IUIAnimationStoryboard *, IUIAnimationVariable *, IUIAnimationTransition *, UI_ANIMATION_KEYFRAME *, UI_ANIMATION_KEYFRAME *, int>)(lpVtbl[7]))((IUIAnimationStoryboard *)Unsafe.AsPointer(ref this), variable, transition, startKeyframe, endKeyframe));
 }
 public int AddKeyframeAfterTransition(IUIAnimationTransition *transition, [NativeTypeName("UI_ANIMATION_KEYFRAME *")] UI_ANIMATION_KEYFRAME **keyframe)
 {
     return(((delegate * unmanaged <IUIAnimationStoryboard *, IUIAnimationTransition *, UI_ANIMATION_KEYFRAME **, int>)(lpVtbl[5]))((IUIAnimationStoryboard *)Unsafe.AsPointer(ref this), transition, keyframe));
 }
 public HRESULT AddTransitionBetweenKeyframes(IUIAnimationVariable *variable, IUIAnimationTransition *transition, UI_ANIMATION_KEYFRAME startKeyframe, UI_ANIMATION_KEYFRAME endKeyframe)
 {
     return(((delegate * unmanaged <IUIAnimationStoryboard *, IUIAnimationVariable *, IUIAnimationTransition *, UI_ANIMATION_KEYFRAME, UI_ANIMATION_KEYFRAME, int>)(lpVtbl[7]))((IUIAnimationStoryboard *)Unsafe.AsPointer(ref this), variable, transition, startKeyframe, endKeyframe));
 }
 public int AddTransition(IUIAnimationVariable *variable, IUIAnimationTransition *transition)
 {
     return(((delegate * unmanaged <IUIAnimationStoryboard *, IUIAnimationVariable *, IUIAnimationTransition *, int>)(lpVtbl[3]))((IUIAnimationStoryboard *)Unsafe.AsPointer(ref this), variable, transition));
 }
 public int ScheduleTransition(IUIAnimationVariable *variable, IUIAnimationTransition *transition, [NativeTypeName("UI_ANIMATION_SECONDS")] double timeNow)
 {
     return(((delegate * unmanaged <IUIAnimationManager *, IUIAnimationVariable *, IUIAnimationTransition *, double, int>)(lpVtbl[4]))((IUIAnimationManager *)Unsafe.AsPointer(ref this), variable, transition, timeNow));
 }