Can someone point me to a reference on designing ActiveX controls? Just recently my friend let me borrow a wonderful VB6 book (Visual Basic 6 Unleashed) and in it was a nice chapter on ActiveX controls. I had to return it eventually, and now I am ActiveX happy yet I don't know much about making them; can someone help?

Also, any of you out there experienced at making ActiveX controls, could you tell me how I can make my control not visible at runtime, I don't see a Visible property for UserControl. Thanks.