Disabling Menu Items in IE using Browser Helper Objects

Posted on 2002-05-25
Last Modified: 2008-02-26
Hi! I have developed a browser helper objects to block certain keyboard actions and the mouse actions on the browser. I want to disable some of the menu options like print, save, and stuff like that. I have implemented the IDocHostUIHandler Interface and has implemented hte ShowUI method as well. How do I proceed now....
Question by:salur
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Accepted Solution

BeyondWu earned 500 total points
ID: 7036464
I think you can subclass the IE mainframe. Then you can catch WM_INITMENU or WM_INITMENUPOPUP, the these handler you can disable/enable the menu item.

Author Comment

ID: 7036526
Thanks for your comment. Are you sure its going to work.

Expert Comment

ID: 7037953
I'm not very sure:o( but you can try it:o)
Maybe you have implement the IObjectWithSite interface,
then you can get the hwnd handle of the ie in the setsite function.
IObjectWithSite::SetSite(IUnknown* punkSite)
      //Get the parent window.
      IOleWindow  *pOleWindow;
      m_hwndParent = NULL;  // this is hwnd of ie.
      if(SUCCEEDED(punkSite->QueryInterface(IID_IOleWindow, (LPVOID*)&pOleWindow)))
      // ...subclass it...
      g_oldWndProc = (WNDPROC)SetWindowLong(m_hwndParent, GWL_WNDPROC, (LPARAM)(WNDPROC)NewExplorerProc);
      // ...

You can try it.
Good Luck.
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Author Comment

ID: 7038330
Hi! Thanks a lot for your comments. I shall try it out and get back to you in this regard.

Expert Comment

ID: 7056102
I tried experimenting myself, and found only one way to intercept the messages of the Internet Explorer window. If you provide me with your email address I will send you the source code I've written to disable or enable any menu in Internet Explorer.
My email address is
Thanks, it's been an interesting learning experience.


Author Comment

ID: 7058870

Beyondwu-----------I appreciate your efforts, thanks for the code snippet....I shall try it out...

GregToombs----I am eagerly waiting to see the source.....

THanks & Regards,

Expert Comment

ID: 7060437
The method I used is a little bit complex, so I don't know if it'll suit your needs or not.
I first tried subclassing the IE window, as BeyondWu suggested, but then I found out that Windows doesn't support subclassing windows that aren't owned by the caller process.
I found out how to get the messages: using hooks. One has to write a .DLL containing a function similar in nature to WindowProc. Every time the external window receives a message, it goes through the hook in your DLL first.
Then, you need to write another program, a .EXE, that loads your DLL and associates its hook with IE.

What I think I'll do is, to make matters simpler for you, I'll write the DLL. It'll have a generic initialization function that asks for the target HWND and a callback function pointer to a standard WindowProc that -you- provide.

How about, for exports for the hook dll,

BOOL HookInitialize(HWND targWindow, WNDPROC messageCallback);

That's it.
When you unload the DLL the hook'll be destroyed as well.
Sound okay?
LVL 49

Expert Comment

ID: 7137365
hi salur, are you still looking for a solution to this problem? -- Dan
LVL 11

Expert Comment

ID: 7260197
Dear salur

I think you forgot this question. I will ask Community Support to close it unless you finalize it within 7 days. You can always request to keep this question open. But remember, experts can only help you if you provide feedback to their questions.
Unless there is objection or further activity,  I will suggest to accept


comment(s) as an answer.
     "refund the points and delete this question"
since nobody had a satisfying answer for you.
since you never gave more feedback.
PAQ at zero points.


Expert Comment

ID: 7332848
Force accepted

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