Animate property of an arbitrary class using Microsoft.UI.Composition

Question

Frederic Goulet 21

Hello,

Using Microsoft.UI.Composition, is it possible to animate a property of a class that would not be an UIElement or a IGraphicsEffect ?

I tried inheriting my custom class from CompositionObject with no luck.

Thanks !

Frederic Goulet 21 Reputation points

2020-12-30T18:04:37.917+00:00

I meant to write Windows.UI.Composition. I am experimenting with Microsoft.UI.Composition in a WinUI 3 app but I guess the answer could apply to both versions.
Yan Gu - MSFT 2,671 Reputation points

2020-12-31T05:50:07.09+00:00

@Frederic Goulet The Composition APIs are usually used to handle Visual Layer objects. Could you please tell me why you want to use Microsoft.UI.Composition APIs to animate properties of a custom class?
Frederic Goulet 21 Reputation points

2020-12-31T14:21:13.95+00:00

I would like to use the animation capabilities to generate music notes (it's just number) to be sent to a software synthesiser. In short, to make computer generated music ! :)
Yan Gu - MSFT 2,671 Reputation points

2021-01-04T06:46:46.717+00:00

@Frederic Goulet It is not supported to animate property of an arbitrary class by using Microsoft.UI.Composition APIs. If you want to animate property of an arbitrary class, you could use a storyboard with a dependency property.

Frederic Goulet 21 Reputation points

2020-12-30T18:04:37.917+00:00

I meant to write Windows.UI.Composition. I am experimenting with Microsoft.UI.Composition in a WinUI 3 app but I guess the answer could apply to both versions.
Yan Gu - MSFT 2,671 Reputation points

2020-12-31T05:50:07.09+00:00

@Frederic Goulet The Composition APIs are usually used to handle Visual Layer objects. Could you please tell me why you want to use Microsoft.UI.Composition APIs to animate properties of a custom class?
Frederic Goulet 21 Reputation points

2020-12-31T14:21:13.95+00:00

I would like to use the animation capabilities to generate music notes (it's just number) to be sent to a software synthesiser. In short, to make computer generated music ! :)
Yan Gu - MSFT 2,671 Reputation points

2021-01-04T06:46:46.717+00:00

@Frederic Goulet It is not supported to animate property of an arbitrary class by using Microsoft.UI.Composition APIs. If you want to animate property of an arbitrary class, you could use a storyboard with a dependency property.