[MSDN Library April 2000] SetWindowRgn (100%)
MSDN Library - April 2000 > Platform SDK > Graphics and Multimedia Services > Windows GDI > Painting and Drawing > Painting and Drawing Reference > Painting and Drawing Functions
[MSDN Library April 2000] SetWindowRgn (40%)
MSDN Library - April 2000 > Windows CE Documentation > Application Development > API Reference > User Interface > Functions