[MSDN Library June 1998] SetClassWord (29.6536796536797%)

MSDN Library Visual Studio 6.0 > Platform SDK > User Interface Services > Windowing > Window Classes > Window Class Reference > Window Class Functions

[MSDN Library April 2000] SetClassWord (29.6536796536797%)

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