Click here to Skip to main content
11,640,125 members (67,846 online)
Rate this: bad
Please Sign up or sign in to vote.
See more: C++ C#
Hi all,

I'm after some guidance on the above subject. I'm trying to intercept the chat messages of a 3rd party process as the messages are painted to the screen.

As I understand it I need to create a custom dll that overrides the WndProc function of the target process, that in turn handles the messages.

Please correct me if I'mn wrong here!

I suspect the dll I write must be written in C++, but the injection process can be done via C++ or C#. (I develop using C# mainly).

What is the format of the code I should inject if I'm to override the WndProc()? Do I just create a dll with an override for that function?

If someone could put this process into broad steps I'd be very grateful as I don't think I totally grasp the steps I need to follow.

Much appreciated,

Posted 8-Mar-11 1:24am
Edited 8-Mar-11 1:27am

1 solution

Rate this: bad
Please Sign up or sign in to vote.

Solution 1

This may be of help: Inject My DLL Into a Process[^]
Jibrohni at 8-Mar-11 10:30am
Thanks. C++ looks so scary compared to C#!

So in my dll would I just want to copy the example you provided but change WM_KILLFOCUS for WM_PAINT?
SAKryukov at 8-Mar-11 14:45pm
Probably designed to be scary :-)
SAKryukov at 8-Mar-11 14:46pm
Interesting reference, my 5.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

  Print Answers RSS
0 Suvendu Shekhar Giri 225
1 F-ES Sitecore 170
2 CPallini 167
3 Sergey Alexandrovich Kryukov 144
4 himanshu agarwal 142
0 OriginalGriff 9,081
1 Sergey Alexandrovich Kryukov 8,847
2 Mika Wendelius 7,027
3 Suvendu Shekhar Giri 2,650
4 F-ES Sitecore 2,558

Advertise | Privacy | Mobile
Web03 | 2.8.150731.1 | Last Updated 8 Mar 2011
Copyright © CodeProject, 1999-2015
All Rights Reserved. Terms of Service
Layout: fixed | fluid

CodeProject, 503-250 Ferrand Drive Toronto Ontario, M3C 3G8 Canada +1 416-849-8900 x 100