WebBrowser and javascript window.close()

Question

If I host a WebBrowser in my application, and a javascript code in the web page shown on my WebBrowser calls window.close() and I click \"Yes\" on

Answer 1

In WPF you can catch WM_CLOSE message by attaching to WebBrowser's message loop.

public MainWindow()
{
    InitializeComponent();
    webBrowser.MessageHook += webBrowser_MessageHook;
}

IntPtr webBrowser_MessageHook(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
    switch(msg)
    {
        case 0x0010:    // WM_CLOSE
            handled = true; // cancel event here
            // do additional stuff here    
            break;
    }
    return IntPtr.Zero;
}