问题
Is there a way to allow popups within embedded WPF WebBrowser control? I didn't manage to find someone elses solution, nor COM interface which enables allowing popups.
I wouldn't like to change users registry settings or use similar invasive methods, as application is intended to be distributed through ClickOnce.
回答1:
You can implement custom popups by handling NewWindow2 or NewWindow3 events sourced by the underlying WebBrowser ActiveX control. Below is a very basic example of how to do this. It can be further improved with a re-usable WebBrowser
-based control, to support popups from popups.
Updated to address the comment. To disable the built-in pop-up blocker, you need to implement WebBrowser Feature Control for FEATURE_WEBOC_POPUPMANAGEMENT. You do need to access Registry.CurrentUser
hive, but that doesn't require admin rights. The code below shows how to do it.
using System.Reflection;
using System.Windows;
using System.Windows.Controls;
using System.Runtime.InteropServices;
using System.Diagnostics;
using Microsoft.Win32;
namespace WpfWbApp
{
public partial class MainWindow : Window
{
WebBrowser webBrowser;
public MainWindow()
{
SetBrowserFeatureControl();
InitializeComponent();
this.webBrowser = new WebBrowser();
this.Content = this.webBrowser;
this.Loaded += MainWindow_Loaded;
}
void MainWindow_Loaded(object sender, RoutedEventArgs e)
{
var axWebBrowser = (SHDocVw.WebBrowser)GetActiveXInstance(this.webBrowser);
axWebBrowser.NewWindow2 += axWebBrowser_NewWindow2;
this.webBrowser.Navigate("http://example.com");
}
void axWebBrowser_NewWindow2(ref object ppDisp, ref bool Cancel)
{
var window = new Window { Width = 400, Height = 300 };
var newWebBrowser = new WebBrowser();
window.Content = newWebBrowser;
window.Show();
ppDisp = GetActiveXInstance(newWebBrowser);
}
/// <summary>
/// Get the underlying WebBrowser ActiveX object;
/// this code depends on SHDocVw.dll COM interop assembly,
/// generate SHDocVw.dll: "tlbimp.exe ieframe.dll",
/// and add as a reference to the project
/// </summary>
static object GetActiveXInstance(WebBrowser browser)
{
var document = browser.Document;
return browser.GetType().InvokeMember("ActiveXInstance",
BindingFlags.GetProperty | BindingFlags.Instance | BindingFlags.NonPublic,
null, browser, new object[] { }) as SHDocVw.WebBrowser;
}
/// <summary>
/// SetBrowserFeatureControlKey
/// </summary>
static void SetBrowserFeatureControlKey(string feature, string appName, uint value)
{
using (var key = Registry.CurrentUser.CreateSubKey(
string.Concat(@"Software\Microsoft\Internet Explorer\Main\FeatureControl\", feature),
RegistryKeyPermissionCheck.ReadWriteSubTree))
{
key.SetValue(appName, (uint)value, RegistryValueKind.DWord);
}
}
/// <summary>
/// SetBrowserFeatureControl
/// </summary>
static void SetBrowserFeatureControl()
{
// http://msdn.microsoft.com/en-us/library/ee330720(v=vs.85).aspx
// FeatureControl settings are per-process
var fileName = System.IO.Path.GetFileName(Process.GetCurrentProcess().MainModule.FileName);
// make the control is not running inside Visual Studio Designer
if (string.Compare(fileName, "devenv.exe", true) == 0 || string.Compare(fileName, "XDesProc.exe", true) == 0)
return;
// Webpages containing standards-based !DOCTYPE directives are displayed in IE10 Standards mode.
SetBrowserFeatureControlKey("FEATURE_BROWSER_EMULATION", fileName, 10000);
// Web Browser Control Popup Management
SetBrowserFeatureControlKey("FEATURE_WEBOC_POPUPMANAGEMENT", fileName, 0);
}
}
}
According to the docs, the pop-up blocker can also be disabled with CoInternetSetFeatureEnabled and FEATURE_WEBOC_POPUPMANAGEMENT, via p/invoke. I haven't tried that venue myself.
来源:https://stackoverflow.com/questions/21470192/allow-popups-in-wpf-webbrowser