[MSDN Library June 1998] WM_KEYDOWN (44.1570881226054%)

MSDN Library Visual Studio 6.0 > Platform SDK > User Interface Services > User Input > Keyboard Input > Keyboard Input Reference > Keyboard Input Messages

[MSDN Library April 2000] WM_KEYDOWN (44.1570881226054%)

MSDN Library - April 2000 > Platform SDK > User Interface Services > Windows User Interface > User Input > Keyboard Input > Keyboard Input Reference > Keyboard Input Messages

[MSDN Library April 2000] WM_KEYDOWN (42.0977011494253%)

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

[MSDN Library April 2000] WM_KEYDOWN Under Japanese Windows 95 and Windows NT (18.2736082938923%)

MSDN Library - April 2000 > Knowledge Base > Windows Development > Win32 Software Development Kit

[MSDN Library June 1998] WM_KEYDOWN Under Japanese Windows 95 and Windows NT (16.7410412440838%)

MSDN Library Visual Studio 6.0 > Knowledge Base > Win32 Software Development Kit