Pointer Events on UI Toolkit Sliders

Unity Engine
,
1

Hey,

I was looking for a way to register callbacks on a Slider reacting to Pointer Events:

The problem is the following: If i register a callback for a pointer event in the way shown below, there is areas of the ui where the slider can already be manipulated, but the event wont fire. If I position the mouse right on the bar (#unity-tracker) where the slider “slides on”, this works.

_slider.RegisterCallback<PointerDownEvent>(_ =>
                Debug.Log($"[{GetType()}] slider was touched")
                );

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So I saw that the slider had an item in it called #unity-drag-container and tried registering the callback on it. Unfortunately without any sucess:

_slider.Q<VisualElement>("unity-drag-container").RegisterCallback<PointerDownEvent>(_ =>
                Debug.Log($"[{GetType()}] Drag container was touched")
                );

So my question is, how do I do this properly?

The sliders value is constantly manipulated by code since it is used as a video control bar. So I cannot simply use ValueChanged Events!

2 Likes
2

I would change “unity-drag- container” to whatever the handles are called