Question

I’m having button (class that extends Sprite). In the middle of button there’s an icon (Sprite with attached icon). Sometimes (not always!) when mouse enters button, MouseEvent.MOUSE_OVER is not thrown. When mouse enters icon MouseEvent.MOUSE_OVER is always thrown. What is the reason of such strange behaviour?

Answer 1

I solved the problem by adding a hitClip sprite (with alpha aet to 0) to button sprite. As it written in livedocs

The mouseOver event is dispatched each time the mouse enters the area
of any child object of the display object container

So to get MouseEvent.MOUSE_OVER one need to have something under mouse (e.g. transparent clip)