Mouse event on transparent background

Question

I have create several canvas with transparent background and wanna make some move event on it.

However, I found that all mouse event (e.g. MouseLeftButtonDown) canno

Answer 1

Transparent DOES react to mouse events, that's the whole point of it, are you sure that you are even hitting the canvas?

Here's a XAML-only example:

If you set the Background to null, either explicity or implicitly by removing the property it will no longer react.