IUIAnimationStoryboard2::SetStoryboardEventHandler method

Specifies a handler for storyboard events.

Syntax

HRESULT SetStoryboardEventHandler(
  [in, optional, unique] IUIAnimationStoryboardEventHandler2 *handler,
  [in]                   BOOL                                fRegisterStatusChangeForNextAnimationEvent,
  [in]                   BOOL                                fRegisterUpdateForNextAnimationEvent
);

Parameters

handler [in, optional]

The handler that Windows Animation should call whenever storyboard status and update events occur. The specified object must implement the IUIAnimationStoryboardEventHandler2 interface or be NULL. See Remarks for more info.

fRegisterStatusChangeForNextAnimationEvent [in]

If TRUE, registers the OnStoryboardStatusChanged event and includes those events in IUIAnimationManager2::EstimateNextEventTime, which estimates the time interval until the next animation event. No default value.

fRegisterUpdateForNextAnimationEvent [in]

If TRUE, registers the OnStoryboardUpdated event and includes those events in IUIAnimationManager2::EstimateNextEventTime, which estimates the time interval until the next animation event. No default value.

Return value

Returns S_OK if successful; otherwise an HRESULT error code. See Windows Animation Error Codes for a list of error codes.

Remarks

Passing NULL for the handler parameter causes Windows Animation to release its reference to any handler object that you passed in earlier. This technique can be essential for breaking reference cycles without having to call the IUIAnimationManager2::Shutdown method.

Requirements

See also

IUIAnimationStoryboard2

IUIAnimationStoryboardEventHandler2