How to Connect to IExplorer in Citrix Environments

Environment: VC6 SP4; Windows 98, NT4, 2000, XP; Internet Explorer 5.x, 6.x

Recently, I had to connect to a running instance of Internet Explorer inside a Citrix environment in seamless mode (it's a way to launch an application in a new session without the Desktop).

All the methods exposed in other articles (such as Using ShellWindows) are not bug free. For example, if you kill explorer.exe and you try to get ShellWindows, this object is unavailable. This also happens in Citrix environments if you open an Internet Explorer window in the seamless mode because you don't have a Desktop launched (and, of course, no explorer.exe is running in that session).

On the other side, if you use Browser Helper Objects (BHO), you have to register your DLL and it will be loaded by all instances of both Windows Explorer and Internet Explorer. This is not desirable, especially if you want to attach your automation code only after opening some specific window.

I have found a better way to obtain the WebBrowser object associated to a running instance of Internet Explorer. It is based upon some yet-to-be-documented features of the Shell. This method ONLY works inside the process of Internet Explorer, so you will have to hook your code previously with SetWindowsHookEx().

I hope this can help somebody. The code is as follows:

#include <comdef.h>
#include <shlobj.h>
#define CWM_GETISHELLBROWSER (WM_USER+ 7)
#define GetIShellBrowser(_hwnd) (IShellBrowser FAR *) ::
        SendMessage(_hwnd,CWM_GETISHELLBROWSER, 0, 0L)

IShellBrowser* pShellBrowser=GetIShellBrowser(hWnd);
// hWnd is the handle of the target IExplorer window

if(pShellBrowser!=NULL)

{

//DO NOT release pShellBrowser
IServiceProviderPtr pIsp;
IServiceProviderPtr pIsp2;
IWebBrowser2Ptr pBrowser;
HRESULT hr= pShellBrowser->QueryInterface(IID_IServiceProvider,
            reinterpret_cast<void **>(&pIsp));
if(hr==S_OK && pIsp!=NULL)
{
  hr=pIsp->QueryService(SID_STopLevelBrowser,
     IID_IServiceProvider, reinterpret_cast<void
     **>(&pIsp2));
  if(hr==S_OK && pIsp2!=NULL)
  {
    hr=pIsp2->QueryService(SID_SWebBrowserApp,
       IID_IWebBrowser2, reinterpret_cast<void **>(&pBrowser));
    if(hr==S_OK && pBrowser!=NULL)
    {
      //Here you have the browser attached to the IExplorer window
    }
  }
}
}

References

Namespace Extensions—the Undocumented Windows Shell

INFO: Accessing the Object Model from Within an ActiveX Control

Connect to Internet Explorer Instances, from Your Own Process.



Comments

  • Heel lifts

    Posted by Crodociorge on 02/21/2013 10:05am

    shoe lifts for men and women might also have various width sizing which you have to take into consideration when choosing the set that's right for you personally http://azumaseizo.sakura.ne.jp/userinfo.php?uid=606

    Reply
  • Shoe lifts

    Posted by Crodociorge on 02/17/2013 01:16pm

    Shoe or shoe lifts insoles can safely add height when utilized with common sense, wearers should understand that their center of gravity will change as well as walking below normal circumstances will take some obtaining utilized to http://www.wallysbait.com/Forum/profile.php?mode=viewprofile&u=65690&sid=111c9ffe10cbf3657461979404b40e97

    Reply
  • Need code in c#

    Posted by sharath1984 on 04/15/2011 03:28am

    Hi, I am having a application published in citrix but I am not able to get its handel in c# code can you pls send me the above code in c#.net. Thanks, Shankar.

    Reply
  • Very good code

    Posted by Legacy on 11/07/2003 12:00am

    Originally posted by: Paco Urbano :D

    :D

    Reply
Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Do you know where your data is? Consumer cloud-based file sharing services store your sensitive company data on servers outside of your control, outside of your policy and regulatory guidelines – maybe even outside your country – and not managed by you. The potential for data leakage, security breaches, and harm to your business is enormous. Download this white paper to learn about file sync and share alternatives that allow you to manage and protect your sensitive data while integrating and …

  • Java developers know that testing code changes can be a huge pain, and waiting for an application to redeploy after a code fix can take an eternity. Wouldn't it be great if you could see your code changes immediately, fine-tune, debug, explore and deploy code without waiting for ages? In this white paper, find out how that's possible with a Java plugin that drastically changes the way you develop, test and run Java applications. Discover the advantages of this plugin, and the changes you can expect to see …

Most Popular Programming Stories

More for Developers

Latest Developer Headlines

RSS Feeds