[MSDN Library June 1998] waveOutGetVolume (42.1052631578947%)

MSDN Library Visual Studio 6.0 > Platform SDK > Graphics and Multimedia Services > Multimedia Reference > Multimedia Functions

[MSDN Library April 2000] waveOutGetVolume (40.1315789473684%)

MSDN Library - April 2000 > Platform SDK > Graphics and Multimedia Services > Windows Multimedia > Multimedia Reference > Multimedia Functions

[MSDN Library April 2000] waveOutGetVolume (38.3971291866029%)

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