[MSDN Library June 1998] WM_VSCROLL (48.132183908046%)

MSDN Library Visual Studio 6.0 > Platform SDK > User Interface Services > Controls > Scroll Bars > Scroll Bar Reference > Scroll Bar Messages

[MSDN Library April 2000] WM_VSCROLL (48.132183908046%)

MSDN Library - April 2000 > Platform SDK > User Interface Services > Windows User Interface > Controls > Scroll Bars > Scroll Bar Reference > Scroll Bar Messages

[MSDN Library April 2000] WM_VSCROLL (42.0977011494253%)

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