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IUIAnimationManager::SetTrimPriorityComparison method

Sets the priority comparison handler to be called to determine whether a scheduled storyboard can be trimmed.

Syntax


HRESULT SetTrimPriorityComparison(
  [in, optional] IUIAnimationPriorityComparison *comparison
);

Parameters

comparison [in, optional]

The priority comparison handler for trimming. The specified object must implement the IUIAnimationPriorityComparison interface or be NULL. See Remarks.

Return value

If the method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code. See Windows Animation Error Codes for a list of error codes.

Remarks

Setting a priority comparison handler with this method enables the application to indicate when scheduling conflicts can be resolved by trimming the scheduled storyboard.

A scheduled storyboard can be trimmed only if the priority comparison object registered with this method returns S_OK. If the new storyboard trims the scheduled storyboard, the scheduled storyboard can no longer affect a variable once the new storyboard begins to animate that variable.

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

Requirements

Minimum supported client

Windows 7, Windows Vista and Platform Update for Windows Vista [desktop apps | Windows Store apps]

Minimum supported server

None supported [desktop apps | Windows Store apps]

Header

UIAnimation.h

IDL

UIAnimation.idl

DLL

UIAnimation.dll

See also

IUIAnimationManager
IUIAnimationPriorityComparison
IUIAnimationManager::SetCancelPriorityComparison
IUIAnimationManager::SetConcludePriorityComparison
IUIAnimationManager::SetCompressPriorityComparison

 

 

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