I hope you can answer a question.  I am writing a poker utility that
tracks what windows are open and displays information about opponents
that are still playing and their previous history that is stored in a
game DB.  It is a very cool project with Pattern Recognition (Pixel
Screen SCraping to OCR) and pretty advanced calculations.  I
just started writing my first prototype in C# and discovered that I
could not set a System Wide CBT hook.

.Net will not allow hooks CBT hooks to be set globally, period!  Works
for mouse and keyboard, but not CBT.

I need to trap when a window is created, destroyed, gotfocus, or
resized.  I do not want to cancel or redirect those messages.  I just
need to get new rect information about the window.

I have discovered ways of doing it in either VB6 or C++.  I am not sure
which is the best strategy to pursue.  I do not code in either
language.  Can I have this hook in VB or C++ and then call my C#
function?  Anone have any suggestions for interacting in between
managed and unmanaged code when the unmanaged code needs to trigger a
C# method?  

Thanks,

Andy