ACTIVE X <OBJECT CODE> Question

We tried to run ACTIVE X on web site (as below).  A Microsoft Security
alert will pop up, prompt user if they want to run and install the
plugin.
Similar to Google and Yahoo Campaion active x install. 

Our problem is if the user click No, how do we detect that (use
javascript?) and send them to another web page.
If they click Yes, then do a window.close();

Security Alert POP UP will be similar to the code below.  (onerror=()
dont seems to work, as it goes there regardless)

<OBJECT ID='PLUG' CLASSID="clsid:556dde35-e955-11d0-a707-000000521958"
 CODEBASE="plugin.cab">

---

Clarification of Question by imi-ga on 17 Jun 2002 23:19 PDT

The active x download uses normal .cab file which extracts itself and
call up a .exe from the .cab.

Dear imi,

As you didn't specify the language that your ActiveX object uses in
your question, I shall use Visual Basic in the below example as it is
the language I work with.

As you have seen, if you try and access a non-existant object - when
the user didn't accept it, Javascript causes an error as it can't find
it. As a result, you need to take action when the object loads.
ActiveX provides access to standard Javascript as your object's
ActiveX container is Internet Explorer. This means we can do:

UserControl.Parent.Script.window.close()

To navigate the user to another URL for instance, we can do:

UserControl.Parent.Script.document.location.href = "http://url.com"

Anything that can be accessed through Javascript in IE can be accessed
as so by changing the part after "UserControl.Parent.Script." as
required.

I have also located information about performing this in Visual C++.
Quoted from the Microsoft Knowledge Base
(http://support.microsoft.com/default.aspx?scid=kb;EN-US;q172763 -
using keywords "ActiveX C++ Internet Explorer Parent.Script").

"GETTING THE TOP LEVEL OF THE OBJECT MODEL (VISUAL C++) 
(Internet Explorer 4.0 ONLY) 

Internet Explorer 4.0 makes accessing the object model much easier.
This is a one-step process:

Get the IHTMLDocument2 from the IClientSite. 

Obtaining IHTMLDocument2 from IOleClientSite 
Every control has access to IClientSite of its container. QI-ing for
IHTMLDocument2 from the client site should give the scripting object
model.
   IOleContainer* pContainer = NULL;
   IHTMLDocument2* pDoc = NULL;

   pClientSite->GetContainer( &pContainer );
   if ( pContainer != NULL )
      pContainer->QueryInterface( &IID_IHTMLDocument2, &pDoc );
Check the return value from the above call. If the control is not
embedded within an HTML page, or if the container is not Internet
Explorer 4.0, then the above call will fail.

Getting IHTMLDocument2 gives the document object in the scripting
object model. Then either automation interfaces or vtable interfaces
can be used to drill down the object model."

I am not a C++ programmer and so I am unable to assist with altering
the above code to suit what I showed in Visual Basic.

I wish your program success,

Technonotice
www.computerkb.co.uk

Imi,

It will be a while until I become an official "Google Researcher"
since I only applied today, here is your answer for free:

The object tag has an opening tag AND a closing tag. If an object
fails to instantiate for some reason the html inside the OBJECT tag is
rendered. So in you case what you want to do is:

<OBJECT ID='PLUG' CLASSID="clsid:556dde35-e955-11d0-a707-000000521958"
CODEBASE="plugin.cab">
<!-- HERE YOU PUT THE CODE IF THE OBJECT FAILED TO INSTANTIATE, WHICH
WILL HAPPEN IF THE USER CLICKS NO AND DOESN'T WANT TO INSTALL THE
COMPONENT -->
<script language="javascript">
    location.href='..wherever you want to send the user..';
</script>
</OBJECT>
<!-- and we get here if the object loads successfully -->
<script language="javascript">
   window.close();
</script>

I hope this solves your problem.

Cheers,
Roman
</script>

Your activex controll does not working at server side. that is the problem.

you can catch the onload event and check there if you can initiate the
activeX (the onload event fires once the page was fully loaded
(including the activeX)).

VBScript Example:

	function CheckActiveX
		dim result, myActiveX
		result = 0
		myActiveX = "your.activeX"
		on error resume next
		if IsObject(CreateObject(myActiveX)) = False then 
			result = 0
		else
			result = 1
		end if
		on error goto 0
		CheckActiveX = result
	end function

In case the user clicked the no button or for some reason there was an
error this function will return 0.