Pointer Events were not triggered in WinUi3

[Prem-Kumar-Shanmugam]

My Xaml Structure :

<Canvas> <Canvas x:Name="BackCanvas" Width="10000" Height="1000" Background="Transparent" PointerPressed="Canvas_PointerPressed"/> <Canvas x:Name="FrontCanvas" Width="10000" Height="1000" /> </Canvas>

C# code :

private void Canvas_PointerPressed(object sender, PointerRoutedEventArgs e) { Debug.WriteLine("BackCanvas"); }

When i have structure like above, BackCanvas pointerPressed event is triggered correctly,because i didn't set background color for FrontCanvas.That's why the pointer Event is received by BackCanvas.

Incase if have Structure like below, the PointerPressed Event was not triggering...

My Xaml Code :

<Canvas> <Canvas x:Name="BackCanvas" Width="10000" Height="1000" Background="Transparent" PointerPressed="Canvas_PointerPressed"/> <ScrollViewer x:Name="Scroller"> <Canvas Width="5000" Height="5000"/> </ScrollViewer> </Canvas>

Here i'm having Scrollviewer instead of FrontCanvas.Here also i didn't set any background color for scrollviewer.But the BackCanvas PointerPressed event was not firing.

What i'm trying to acheive is i want to receive viewChange from scrollviewer and receive pointer events from BackCanvas while pointer actions.

NOTE: I can't keep the BackCanvas inside the ScrollViewer.My app structure was not like that.

What i'm trying to achieve is ---> we are rendering in SwapChainPanel. This rendering and my view Layer(like backCanvas) should sync while scrolling the scrollviewer and i need interaction with view Layer. My SwapChain,View,and Scrollviewer all were children inside a Canvas.