This is just another subclassing dll, similar to hundreds of components out there in the internet, but it comes with source code that you study and customize as you wish. Its main feature is the direct support for the following Windows hooks: WH_KEYBOARD, WH_MOUSE, WH_MSGFILTER, WH_CALLWNDPROC. Only one hook per project is allowed (as there can only be one per thread), but all the 4 hooks can be used simultaneous.