For a better explanation of what I'm trying to do, go here: http://www.experts-exchange.com/Programming/Programming_Languages/Dot_Net/VB_DOT_NET/Q_21815892.html
-- Anyone who answers this question can also have the points from that question.
Essentially, I need a way to hook WM_USER messages sent to a specific control in an external application. I've been writing the application in VB .NET but can only find the control's window handle--apparently VB isn't capable of installing this kind of hook. Unfortunately, I've not written a line of C or C++ code in my life, so I'm a little stuck.
Does anyone know of a free pre-written library that would let me see the lParam of any WM_USER (+ 1004) event sent to a window I have the handle for? If not, can anyone post a bit of code that could accomplish this?