Why pointer events are not triggered in custom control?

[jyswjjgdwtdtj]

Many discussions talks about this question.😭 But I reset Bounds property of ICustomDrawOperation (I use it in overrided Render method to draw control directly), set HitTest Method not only in ICustomDrawOperation but also in ICustomHitTest (this is for my custom control).Pointer event still not be triggered.
A absolutely, completely custom control is really necessary for me, its render method provides a immediatadrawingcontext or SKCanvas, and all the event are called on it.
Thank you!

[rabbitism]

IIRC you need to draw a background with color (transparent works too) to make it pointer-interactive.

[LaurentInSeattle]

The control will receive pointer event with IsHitTestVisible (usually true) and with a non-null (non set) Background property. (usually not set)

I have ended up by always setting up Background="Transparent" in my UserControl template code.

[jyswjjgdwtdtj]

My custom control is inheriting from Control class, so it doesn't have Background property😭 Maybe i should make it inherit from UserControl……

[maxkatz6]

It doesn't really need to have a background property. It just needs to render a background rectangle.

public override void Render(DrawingContext context)
{
     context.FillRectangle(Brushes.Transparent, new Rect(0, 0, Bounds.Width, Bounds.Height));
}

[jyswjjgdwtdtj]

If i want to make a control be able to receive pointer events, i should set background property of all of its ancestors. Though i think these events should be bubbling event……

[LaurentInSeattle]

Consider using TemplatedControl instead of Control, that will give you the Background property...

[maxkatz6]

@jyswjjgdwtdtj you don't need to set it on all ancestors