How do I hide the CefSharp.WinForms.ChromiumWebBrowser right click context menu?

Question

I\'m using CefSharp.WinForms.ChromiumWebBrowser v45 in my project. When I right click into the web browser, the default context menu will show up:

Answer 1

If you implement IContextMenuHandler you can control the ContextMenu. The two links below demo what's required (and some other useful features).

https://github.com/cefsharp/CefSharp/blob/935d3900ba2147f4786386596b62339087ff61b0/CefSharp.WinForms.Example/Handlers/MenuHandler.cs#L15

https://github.com/cefsharp/CefSharp/blob/c18f951a97a515df112d67775c767d4222f88c23/CefSharp.WinForms.Example/BrowserTabUserControl.cs#L31

In general the CefSharp.WinForms.Example project demos quite a few features, check it out if you require other features.

Answer 2

webBrowser.PreviewMouseRightButtonDown += HandleWebBrowserPreviewMouseRightButton;
webBrowser.PreviewMouseRightButtonUp += HandleWebBrowserPreviewMouseRightButton;

private void HandleWebBrowserPreviewMouseRightButton(object sender, MouseButtonEventArgs e) {
            // Preventing right-click until https://github.com/cefsharp/CefSharp/issues/1915 is fixed
            e.Handled = true;
}

Answer 3

The simplest way for you is set event PreviewMouseRightButtonUp and PreviewMouseRightButtonDown with the same function have e.Handle = true. This solution will not show context menu of cefsharp when you right click.

XAML:

<wpf:ChromiumWebBrowser Grid.Row="1" x:Name="Browser" Margin="30,0" IsBrowserInitializedChanged="Browser_IsBrowserInitializedChanged" PreviewMouseRightButtonDown="Browser_PreviewMouseRightButton" PreviewMouseRightButtonUp="Browser_PreviewMouseRightButton"/>

And the function:

private void Browser_PreviewMouseRightButton(object sender, MouseButtonEventArgs e)
{
    e.Handled = true;
}

Answer 4

You can do it like this....

ChromiumWebBrowser browser = new ChromiumWebBrowser();
browser.LoadingStateChanged += (sender, args) =>
{
    if (args.IsLoading == false)
    {
        _browser.ExecuteScriptAsync("document.oncontextmenu = function() { return false; };");
    }
};

I'm using this version:

<package id="CefSharp.Wpf" version="78.3.10-CI3386" targetFramework="net48" />

Answer 5

This is the implementation for lazy people like me. It is based on CefSharp v53.0.0

public class CustomMenuHandler : CefSharp.IContextMenuHandler 
{
    public void OnBeforeContextMenu(IWebBrowser browserControl, IBrowser browser, IFrame frame, IContextMenuParams parameters, IMenuModel model)
    {
        model.Clear();
    }

    public bool OnContextMenuCommand(IWebBrowser browserControl, IBrowser browser, IFrame frame, IContextMenuParams parameters, CefMenuCommand commandId, CefEventFlags eventFlags)
    {

        return false;
    }

    public void OnContextMenuDismissed(IWebBrowser browserControl, IBrowser browser, IFrame frame)
    {

    }

    public bool RunContextMenu(IWebBrowser browserControl, IBrowser browser, IFrame frame, IContextMenuParams parameters, IMenuModel model, IRunContextMenuCallback callback)
    {
        return false;
    }
}

How to use it

ChromiumWebBrowser browser = new ChromiumWebBrowser();
browser.MenuHandler = new CustomMenuHandler();