Tracking changes when animating with Windows.UI.Composition.CompositionPropertySet

Question

Hello,

Is there a way to have a function called with the value of 'prop' everytime the CompositionPropertySet property is animated ?

Thanks !

var compositor = new Windows.UI.Composition.Compositor();

var propertySet= compositor.CreatePropertySet();
propertySet.InsertVector2("prop", new Vector2(50.0f, 50.0f));

var animation = compositor.CreateVector2KeyFrameAnimation();
animation.InsertKeyFrame(0.00f, new Vector2(50.0f, 50.0f));
animation.InsertKeyFrame(0.25f, new Vector2(75.0f, 75.0f));
animation.InsertKeyFrame(0.50f, new Vector2(100.0f, 75.0f));
animation.Duration = TimeSpan.FromMilliseconds(4000);
animation.IterationCount = 3;

propertySet.StartAnimation("prop", animation);

Answer 1

Hello,

Welcome to Microsoft Q&A!

Is there a way to have a function called with the value of 'prop' everytime the CompositionPropertySet property is animated ?

No, currently there is no such event or function. My suggestion is that you could create a target function yourself. Then check the value when you call the StartAnimation() method and call the target function manually when you found the value is prop.

Thank you.

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