[MSDN Library June 1998] WindowProc (41.4473684210526%)

MSDN Library Visual Studio 6.0 > Platform SDK > User Interface Services > Windowing > Window Procedures > Window Procedure Reference > Window Procedure Functions

[MSDN Library April 2000] WindowProc (41.4473684210526%)

MSDN Library - April 2000 > Platform SDK > User Interface Services > Windows User Interface > Windowing > Window Procedures > Window Procedure Reference > Window Procedure Functions

[MSDN Library April 2000] WindowProc (34.988038277512%)

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