[MSDN Library April 2000] WM_KEYDOWN (39.0136179609864%)

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

[MSDN Library June 1998] WM_KEYDOWN (32.5613154960981%)

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 (32.5613154960981%)

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

[MSDN Library June 1998] WM_KEYDOWN Under Japanese Windows 95 and Windows NT (15.2292212431531%)

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

[MSDN Library April 2000] WM_KEYDOWN Under Japanese Windows 95 and Windows NT (11.0591807573232%)

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