How can I listen Unity's classes like BlendShape, Transform?

Unity Engine
1

Hello, I want to learn is Blend Shape is changed? If its changed which value assigned to it?
There is Transform class which have function Transform.hasChanged so you can learn is Transform changed or not. (Unity - Scripting API: Transform.hasChanged)
But this is not enough for me. I don’t want to do this with function like Update.
How can I do this, any advice?

2

You can’t.

I’ve asked repeatedly for years for a Transform change callback, they won’t do it.

3

My god, that’s so bad but actually you can check Transform.hasChanged in every frame of course its lower game performance because every frame you will check this function so, well nothing to do that then.

4

Depending on your target platform, you could theoretically use Harmony to set up callbacks anywhere you want.

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