Animates the value of the Opacity property.
HRESULT SetOpacity( IDCompositionAnimation *animation );
An animation that represents how the value of the Opacity property changes over time. This parameter must not be NULL.
If the function succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code. See DirectComposition Error Codes for a list of error codes.
This method makes a copy of the specified animation. If the object referenced by the animation parameter is changed after calling this method, the change does not affect the Opacity property unless this method is called again. If the Opacity property was previously animated, calling this method replaces the previous animation with the new animation.
This method fails if animation is an invalid pointer or if it was not created by the same IDCompositionDevice interface as the affected compostion effect group. The interface cannot be a custom implementation; only interfaces created by Microsoft DirectComposition can be used with this method.
|Minimum supported client||Windows 8 [desktop apps only]|
|Minimum supported server||Windows Server 2012 [desktop apps only]|