z-wheel events - Microsoft Visual C & C++

Hello,I am developing with Visual C++ 2005 Express Edition and I would like toknow how to see z-wheel events of the mouse in order to change the focus of acomponent on my visual interface.That is to say, I have the focus on Textbox1 and when an z-wheel event come,the focus will pass at the Textb......(with 1 answers.)