[MSDN Library June 1998] RectVisible (50.3735632183908%)

MSDN Library Visual Studio 6.0 > Platform SDK > Graphics and Multimedia Services > GDI > Clipping > Clipping Reference > Clipping Functions

[MSDN Library April 2000] RectVisible (50.3735632183908%)

MSDN Library - April 2000 > Platform SDK > Graphics and Multimedia Services > Windows GDI > Clipping > Clipping Reference > Clipping Functions

[MSDN Library April 2000] RectVisible (42.7011494252874%)

MSDN Library - April 2000 > Windows CE Documentation > Application Development > API Reference > User Interface > Functions