Topic created on: December 22, 2007 19:16 CST by 2haerim .

MS released Detours Library Express 2.1 along with all the sources, docs, and samples.  It is really a good one to hooking, injecting and so on.  And it is free to use for non-commercial purpose.

You can find it from the following link:

http://research.microsoft.com/sn/detours/


I wish people here could share more information about it.

At the moment, I am trying to intercept a COM object's member function and need someone's help.

Here is what I want to do.

T.exe : An EXE program.
P.dll   : A COM DLL server program supporting a coclass whose class id is CLSID_Target.  The coclass implements ITarget interface.  ITarget has IID_ITarget as its interface id and has a method ITarget::DetourMe().

D.dll : My own detour dll which will intercept ITarget::DetourMe().  This is what I want to create.

When T.exe runs, it calls CoCreateInstance to create a COM object with CLSID_Target.
Next, T.exe calls QueryInterface to get ITarget interface and then calls ITarget::DetourMe() method.

=> I want to create D.dll and inject it into T.exe or P.dll to intercept the ITarget::DetourMe() method and do some preprocessing and postprocessing.

I am trying to modify the 'commem' sample (it is included in the Detours Libray samples folder) for this purpose, but I am not still clear about how to achive this.

Can someone shed a light on me?

HaeRim