[MSDN Library June 1998] CB_DIR (51.2426900584795%)

MSDN Library Visual Studio 6.0 > Platform SDK > User Interface Services > Controls > Combo Boxes > Combo Box Reference > Combo Box Messages

[MSDN Library April 2000] CB_DIR (51.2426900584795%)

MSDN Library - April 2000 > Platform SDK > User Interface Services > Windows User Interface > Controls > Combo Boxes > Combo Box Reference > Combo Box Messages