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date: Wed, 2 Jul 2008 22:15:00 -0700,
group: microsoft.public.inetsdk.programming.html_objmodel
back
Re: Problem in accessing the document object withing iframe
Many Thanks for your reply. It gave me a new hope to access the frames.
I am working on C#.Net applcation and tried the way that has been suggested.
and wrote the following code:
----------------------------------------------------------------------------------------------
Guid guidIOleContainer = typeof(IOleContainer).GUID;
// Here oDoc is the mshtml.HTMLDocument object
IntPtr punk = Marshal.GetIUnknownForObject(oDoc);
object iOleContainer = new object();
// But this give me null
Type typeIOleContainer = this.GetType().GetInterface("IOleClientContainer");
IntPtr ppvContainerIntPtr = Marshal.GetIUnknownForObject(iOleContainer);
int hr = Marshal.QueryInterface(punk, ref guidIOleContainer, out
ppvContainerIntPtr);
if (ppvContainerIntPtr != IntPtr.Zero)
{
IOleContainer pOleContainer =
(IOleContainer)Marshal.PtrToStructure(ppvContainerIntPtr, typeIOleContainer);
Marshal.Release(punk);
object[] objs = new object[20];
pOleContainer.EnumObjects((int)tagOLECONTF.EMBEDDINGS, objs); //Access
IEnumUnknown pOleEnumObject = objs[0] as IEnumUnknown;
MessageBox.Show(pOleEnumObject.ToString());
}
----------------------------------------------------------------------------------------------
But The problems are :
1) typeIOleContainer is always null.
2) Marshal.QueryInterface for IoleContainer always fails.
How can I access the IOleContainer interface using doucment object in .net.
Please let me know how can I proceed to access frames or Iframe elements.
Thanks a lot,
Hetal
"Igor Tandetnik" wrote:
> "Hetal" wrote in message
> news:323CADF9-D4BF-42EF-82F3-8C5DC1082A49@microsoft.com
> > I want to access the images rendered within iframe. But whever i am
> > trying to access it always gives me "Access Denied" and sometimes
> > "Permission Denied" error.
> > I am accessing it using java script. Even I have tried to access using
> > IHTMLElementCollection. But it gives the same error.
>
> You are blocked by cross-domain scripting security restrictions. This
> technique bypasses them:
>
> http://support.microsoft.com/kb/196340
>
> --
> With best wishes,
> Igor Tandetnik
>
> With sufficient thrust, pigs fly just fine. However, this is not
> necessarily a good idea. It is hard to be sure where they are going to
> land, and it could be dangerous sitting under them as they fly
> overhead. -- RFC 1925
>
>
>
date: Sat, 5 Jul 2008 02:16:00 -0700
author: Hetal
Re: Problem in accessing the document object withing iframe
Starting from IE5 you should be able to cast the frame element to
IWebBrowser2 and try to cast its document property to IHtmlDocument2, though
the official way is to use IOleClientContainer.
You don't have a type library for IOleClientContainer and I guess you need
to declare a managed version of this interface.
"Hetal" wrote in message
news:1A13178B-D53E-4A4D-9D0E-B19ED5172278@microsoft.com...
> Many Thanks for your reply. It gave me a new hope to access the frames.
>
> I am working on C#.Net applcation and tried the way that has been
> suggested.
> and wrote the following code:
>
> ----------------------------------------------------------------------------------------------
> Guid guidIOleContainer = typeof(IOleContainer).GUID;
>
> // Here oDoc is the mshtml.HTMLDocument object
> IntPtr punk = Marshal.GetIUnknownForObject(oDoc);
>
> object iOleContainer = new object();
>
> // But this give me null
> Type typeIOleContainer =
> this.GetType().GetInterface("IOleClientContainer");
>
> IntPtr ppvContainerIntPtr = Marshal.GetIUnknownForObject(iOleContainer);
>
> int hr = Marshal.QueryInterface(punk, ref guidIOleContainer, out
> ppvContainerIntPtr);
>
> if (ppvContainerIntPtr != IntPtr.Zero)
> {
> IOleContainer pOleContainer =
> (IOleContainer)Marshal.PtrToStructure(ppvContainerIntPtr,
> typeIOleContainer);
>
> Marshal.Release(punk);
>
> object[] objs = new object[20];
>
> pOleContainer.EnumObjects((int)tagOLECONTF.EMBEDDINGS, objs);
> //Access
>
> IEnumUnknown pOleEnumObject = objs[0] as IEnumUnknown;
>
> MessageBox.Show(pOleEnumObject.ToString());
> }
> ----------------------------------------------------------------------------------------------
>
> But The problems are :
> 1) typeIOleContainer is always null.
> 2) Marshal.QueryInterface for IoleContainer always fails.
>
> How can I access the IOleContainer interface using doucment object in
> .net.
>
> Please let me know how can I proceed to access frames or Iframe elements.
>
> Thanks a lot,
> Hetal
>
> "Igor Tandetnik" wrote:
>
>> "Hetal" wrote in message
>> news:323CADF9-D4BF-42EF-82F3-8C5DC1082A49@microsoft.com
>> > I want to access the images rendered within iframe. But whever i am
>> > trying to access it always gives me "Access Denied" and sometimes
>> > "Permission Denied" error.
>> > I am accessing it using java script. Even I have tried to access using
>> > IHTMLElementCollection. But it gives the same error.
>>
>> You are blocked by cross-domain scripting security restrictions. This
>> technique bypasses them:
>>
>> http://support.microsoft.com/kb/196340
>>
>> --
>> With best wishes,
>> Igor Tandetnik
>>
>> With sufficient thrust, pigs fly just fine. However, this is not
>> necessarily a good idea. It is hard to be sure where they are going to
>> land, and it could be dangerous sitting under them as they fly
>> overhead. -- RFC 1925
>>
>>
>>
date: Mon, 7 Jul 2008 17:46:27 -0500
author: Sheng Jiang[MVP] uss
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