UWP - Interception of pointer events by parent control (where child is ScrollViewer) - wpf

Question

I'm looking for an approach to how I can intercept all events like PointerReleased by a parent.
My issue is that I can't intercept the ScrollViewer's parent PointerReleased event.
I want to put a finger (cursor) into the ScrollViewer move over for 100px with my finger and then release it; it should work as if Scrollviewer.IsHitTestVisible=false and receive all events to outerStack (scrollerviewer's parent), but scrollviewer should work as if IsHitTestVisible=true and continue to get all related events to itself (scrollviewer) and its children (scrollviewer children like innerStack).
I am getting the following log
innerStack_PointerPressed
scrollView_PointerPressed
outerStack_PointerPressed
CoreWindow_PointerPressed
But I'm expecting to see this one
innerStack_PointerPressed
scrollView_PointerPressed
outerStack_PointerPressed
CoreWindow_PointerPressed
outerStack_PointerReleased
CoreWindow_PointerReleased
There is a code example
<Page
x:Class="App9.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<StackPanel x:Name="outerStack"
Background="Red"
Padding="40"
PointerPressed="outerStack_PointerPressed"
PointerReleased="outerStack_PointerReleased">
<ScrollViewer x:Name="scrollView"
Background="Blue"
Padding="40"
PointerPressed="scrollView_PointerPressed"
PointerReleased="scrollView_PointerReleased"
VerticalScrollBarVisibility="Visible"
VerticalScrollMode="Enabled"
HorizontalScrollBarVisibility="Visible"
HorizontalScrollMode="Enabled"
Height="500">
<StackPanel x:Name="innerStack"
Background="Green"
Padding="40"
PointerPressed="innerStack_PointerPressed"
PointerReleased="innerStack_PointerReleased">
<TextBlock Text="A" FontSize="100"/>
<TextBlock Text="B" FontSize="100"/>
<TextBlock Text="C" FontSize="100"/>
<TextBlock Text="D" FontSize="100"/>
<TextBlock Text="E" FontSize="100"/>
<TextBlock Text="F" FontSize="100"/>
<TextBlock Text="G" FontSize="100"/>
<TextBlock Text="H" FontSize="100"/>
<TextBlock Text="I" FontSize="100"/>
<TextBlock Text="J" FontSize="100"/>
<TextBlock Text="K" FontSize="100"/>
<TextBlock Text="L" FontSize="100"/>
<TextBlock Text="M" FontSize="100"/>
<TextBlock Text="N" FontSize="100"/>
<TextBlock Text="O" FontSize="100"/>
<TextBlock Text="P" FontSize="100"/>
<TextBlock Text="Q" FontSize="100"/>
<TextBlock Text="R" FontSize="100"/>
<TextBlock Text="S" FontSize="100"/>
<TextBlock Text="T" FontSize="100"/>
<TextBlock Text="U" FontSize="100"/>
<TextBlock Text="V" FontSize="100"/>
<TextBlock Text="W" FontSize="100"/>
<TextBlock Text="X" FontSize="100"/>
<TextBlock Text="Y" FontSize="100"/>
<TextBlock Text="Z" FontSize="100"/>
</StackPanel>
</ScrollViewer>
</StackPanel>
</Page>
using System.Diagnostics;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Input;
namespace App9
{
public sealed partial class MainPage : Page
{
public MainPage()
{
this.InitializeComponent();
Window.Current.CoreWindow.PointerPressed += CoreWindow_PointerPressed;
Window.Current.CoreWindow.PointerReleased += CoreWindow_PointerReleased;
}
private void CoreWindow_PointerPressed(Windows.UI.Core.CoreWindow sender, Windows.UI.Core.PointerEventArgs args)
{
Debug.WriteLine("CoreWindow_PointerPressed");
}
private void CoreWindow_PointerReleased(Windows.UI.Core.CoreWindow sender, Windows.UI.Core.PointerEventArgs args)
{
Debug.WriteLine("CoreWindow_PointerReleased");
}
private void outerStack_PointerPressed(object sender, PointerRoutedEventArgs e)
{
Debug.WriteLine("outerStack_PointerPressed");
}
private void outerStack_PointerReleased(object sender, PointerRoutedEventArgs e)
{
Debug.WriteLine("outerStack_PointerReleased");
}
private void scrollView_PointerPressed(object sender, PointerRoutedEventArgs e)
{
Debug.WriteLine("scrollView_PointerPressed");
}
private void scrollView_PointerReleased(object sender, PointerRoutedEventArgs e)
{
Debug.WriteLine("scrollView_PointerReleased");
}
private void innerStack_PointerPressed(object sender, PointerRoutedEventArgs e)
{
Debug.WriteLine("innerStack_PointerPressed");
}
private void innerStack_PointerReleased(object sender, PointerRoutedEventArgs e)
{
Debug.WriteLine("innerStack_PointerReleased");
}
}
}

Answer 1

The simplest solution is to put the next property to the content view of ScrollViewer
ScrollViewer.Content.ManipulationMode="TranslateX,System"
The solution is not perfect, but it's simple.
More info https://learn.microsoft.com/ru-ru/archive/blogs/wsdevsol/where-did-all-my-gestures-go

Answer 2

My issue is that I can't intercept the ScrollViewer's parent PointerReleased event.
Please refer to Events and routed events overview document, and
Setting the Handled property to true influences the event system behavior. When Handled is true, the routing stops for most event handlers; the event doesn't continue along the route to notify other attached handlers of that particular event case.
So you could set scrollview's PointerReleased Handled as true
private void scrollView_PointerPressed(object sender, PointerRoutedEventArgs e)
{
Debug.WriteLine("scrollView_PointerPressed");
e.Handled = true;
}
private void scrollView_PointerReleased(object sender, PointerRoutedEventArgs e)
{
Debug.WriteLine("scrollView_PointerReleased");
e.Handled = true;
}