CanBeDone: unmanaged IntPtr to Delegate?

[Alejandro Lapeyre]

Hello:
I am trying to write a wrapper for the WabApi (wich manages the Windows
Adress Book).
It uses some "kind of" interfaces, like IWABObject. But these interfaces
dont have Guids, and QueryInterface fails.
So I am thinking of getting the VTable and calling its methods.
I allready have the Vtable wich is something like this:

public structure IWABObjectVtbl
QueryInterface as IntPtr
etc.
...
end structure

The question is How can i cast the IntPtr to a delegate so I can call the
method?

Thanks a lot!!
Alejandro Lapeyre

[Ken Tucker [MVP]]

Hi,

Maybe this will help.
http://www.elitevb.com/content/01,0075,01/04.aspx

Ken
-----------------------
"Alejandro Lapeyre" <no*********************@hotmail.com> wrote in message
news:eI**************@TK2MSFTNGP10.phx.gbl...

Hello:
I am trying to write a wrapper for the WabApi (wich manages the Windows
Adress Book).
It uses some "kind of" interfaces, like IWABObject. But these interfaces
dont have Guids, and QueryInterface fails.
So I am thinking of getting the VTable and calling its methods.
I allready have the Vtable wich is something like this:

public structure IWABObjectVtbl
QueryInterface as IntPtr
etc.
...
end structure

The question is How can i cast the IntPtr to a delegate so I can call the
method?

Thanks a lot!!
Alejandro Lapeyre

[Mattias Sjögren]

Alejandro,

The question is How can i cast the IntPtr to a delegate so I can call the
method?

That's currently not possible, but will be in Whidbey.

In the meantime, I would suggest handling things like this in a VC++
component.

Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.

[Alejandro Lapeyre]

Thank you for the answer!!!

I have never did any programming in C++ but after spending an hour I dont
find it so difficult (for this kind of small project).

Regards,
Alejandro Lapeyre.

"Mattias Sjögren" <ma********************@mvps.org> escribió en el mensaje
news:uT**************@TK2MSFTNGP09.phx.gbl...

Alejandro,

The question is How can i cast the IntPtr to a delegate so I can call the
method?

That's currently not possible, but will be in Whidbey.

In the meantime, I would suggest handling things like this in a VC++
component.

Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.