コード例 #1
0
 /// <summary>
 /// Asynchronously wait for the Chromium widget window to be created for the given ChromiumWebBrowser,
 /// and when created hook into its Windows message loop.
 /// </summary>
 /// <param name="browser">The browser to intercept Windows messages for.</param>
 /// <param name="forwardAction">This action will be called whenever a Windows message is received.</param>
 internal static void SetupLoop(ChromiumWebBrowser browser, Action <Message> forwardAction)
 {
     Task.Factory.StartNew(() =>
     {
         try
         {
             bool foundWidget = false;
             while (!foundWidget)
             {
                 browser.Invoke((Action)(() =>
                 {
                     IntPtr chromeWidgetHostHandle;
                     if (ChromeWidgetHandleFinder.TryFindHandle(browser, out chromeWidgetHostHandle))
                     {
                         foundWidget = true;
                         new ChromeWidgetMessageInterceptor(browser, chromeWidgetHostHandle, forwardAction);
                     }
                     else
                     {
                         // Chrome hasn't yet set up its message-loop window.
                         Thread.Sleep(10);
                     }
                 }));
             }
         }
         catch
         {
             // Errors are likely to occur if browser is disposed, and no good way to check from another thread
         }
     });
 }
コード例 #2
0
        /// <summary>
        /// Chrome's message-loop Window isn't created synchronously, so this may not find it.
        /// If so, you need to wait and try again later.
        /// </summary>
        public static bool TryFindHandle(ChromiumWebBrowser browser, out IntPtr chromeWidgetHostHandle)
        {
            var          browserHandle             = browser.Handle;
            var          windowHandleInfo          = new ChromeWidgetHandleFinder(browserHandle);
            const string chromeWidgetHostClassName = "Chrome_RenderWidgetHostHWND";

            chromeWidgetHostHandle = windowHandleInfo.FindDescendantByClassName(chromeWidgetHostClassName);
            return(chromeWidgetHostHandle != IntPtr.Zero);
        }