[MSDN Library April 2000] WM_UNDO (39.0136179609864%)
MSDN Library - April 2000 > Windows CE Documentation > Application Development > API Reference > User Interface > Messages
[MSDN Library June 1998] WM_UNDO (30.3321678321678%)
MSDN Library Visual Studio 6.0 > Platform SDK > User Interface Services > Controls > Edit Controls > Edit Control Reference > Edit Control Messages
[MSDN Library April 2000] WM_UNDO (30.3321678321678%)
MSDN Library - April 2000 > Platform SDK > User Interface Services > Windows User Interface > Controls > Edit Controls > Edit Control Reference > Edit Control Messages