MicrosoftEdge / MicrosoftEdge/WebView2Feedback

[Problem/Bug]: Capture MouseWheel and PreviewMouseWheel events in EdgeWebview2 wpf app

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@Badhri is already working on this.

Since Feb 13, 2025.

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Description

What happened?

I am unable to capture and handle MouseWheel and PreviewMouseWheel events in Edge WebView2 WPF app.

I am pressing (Ctrl + Mouse wheel scroll) and c# app is not capturing the events.

Importance

Blocking. My app's basic functions are not working due to this issue.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

133.0.3065.59

SDK Version

1.0.3065.39

Framework

WPF

Operating System

Windows 10

OS Version

10.0.19045.5371

Repro steps

Code to reproduce:

using Microsoft.Web.WebView2.Core;
using System;
using System.Windows;
using System.Windows.Input;

namespace WpfApp
{
    public partial class MainWindow : Window
    {
        private double zoomFactor = 1.0;

        public MainWindow()
        {
            InitializeComponent();
            InitializeWebView();
        }

        private async void InitializeWebView()
        {
            await webView.EnsureCoreWebView2Async(null);
            webView.CoreWebView2.Navigate("https://example.com"); // Replace with your desired URL
        }

        private void Window_MouseWheel(object sender, MouseWheelEventArgs e)
        {
            // Check the direction of the scroll
            if (e.Delta > 0) // Scrolling up
            {
                ZoomIn();
            }
            else // Scrolling down
            {
                ZoomOut();
            }

            // Mark the event as handled to prevent further processing
            e.Handled = true;
        }

        private void ZoomIn()
        {
            zoomFactor += 0.1;
            webView.CoreWebView2.ZoomFactor = zoomFactor;
        }

        private void ZoomOut()
        {
            zoomFactor = Math.Max(0.1, zoomFactor - 0.1); // Prevent zooming out too much
            webView.CoreWebView2.ZoomFactor = zoomFactor;
        }
    }
}
Repros in Edge Browser

No, issue does not reproduce in the corresponding Edge version

Regression

Don't know

Last working version (if regression)

No response

Contributor guide

No contributing guide indexed for this repository

First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Assessment

This issue has not been assessed yet.

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