/// <summary>
/// Helper Method to get the IHTMLDocument2
/// </summary>
/// <param name="mainWindow"></param>
/// <returns></returns>
private static IHTMLDocument2 GetHtmlDocument(IInteropWindow mainWindow)
{
var ieServer = "Internet Explorer_Server".Equals(mainWindow.GetClassname())
? mainWindow
: mainWindow.GetChildren().FirstOrDefault(window => window.GetClassname() == "Internet Explorer_Server");
if (ieServer == null)
{
Log.Warn().WriteLine("No Internet Explorer_Server for {0}", mainWindow.Text);
return(null);
}
var windowMessage = WindowsMessage.RegisterWindowsMessage("WM_HTML_GETOBJECT");
if (windowMessage == 0)
{
Log.Warn().WriteLine("Couldn't register WM_HTML_GETOBJECT");
return(null);
}
Log.Debug().WriteLine("Trying WM_HTML_GETOBJECT on {0}", ieServer.Classname);
if (User32Api.TrySendMessage(ieServer.Handle, windowMessage, IntPtr.Zero, out UIntPtr response))
{
var document2 = (IHTMLDocument2)Accessible.ObjectFromLresult(response, typeof(IHTMLDocument).GUID, IntPtr.Zero);
if (document2 != null)
{
return(document2);
}
Log.Error().WriteLine(null, "No IHTMLDocument2 found");
return(null);
}
Log.Error().WriteLine(null, "No answer on WM_HTML_GETOBJECT.");
return(null);
}