How to make 'ontounchend in document' return true in WebView2

Question

In WebView2 browser, I want to move things with finger. But it does not support ontouchxxx(ontouchstart, ontouchend). In other word, "ontouchend" in document returns false.

I tried various ways as followings but it doesn't work.

webView2 = new Microsoft.Web.WebView2.WinForms.WebView2();

1. setTouchEmulationEnabled

    await webView2.EnsureCoreWebView2Async(null);
    if (webView2.CoreWebView2 != null)
    {
        webView2.CoreWebView2.CallDevToolsProtocolMethodAsync("Emulation.setEmitTouchEventsForMouse", "{'enabled': true }");
    }

2. --enable-features=msWebView2EnableDraggableRegions

    string arg = @"--enable-features=""msWebView2EnableDraggableRegions""";
    var opts = new CoreWebView2EnvironmentOptions { AdditionalBrowserArguments = arg };
    var webView2Environment = await CoreWebView2Environment.CreateAsync(null, null, opts);
    await webView21.EnsureCoreWebView2Async(webView2Environment);

3. IsSwipeNavigationEnabled

    await webView2.EnsureCoreWebView2Async(null);
    if (webView2.CoreWebView2 != null)
    {
        webView2.CoreWebView2.Settings.IsSwipeNavigationEnabled = true;
    }

4. Change UserAgent like iPad emulator of chrome,edge which return true for "ontouchend" in document

     await webView2.EnsureCoreWebView2Async(null);
     if (webView2.CoreWebView2 != null)
     {
         webView2.CoreWebView2.Settings.UserAgent = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.0 Safari/605.1.15";
     }

Answer 1

In my opinion, this is by design, since this API only works on touch devices, if you want to implement such functionality on pc browser, I think you may need to use some other plugin.