[MSDN Library June 1998] WODM_GETVOLUME (71.75%)
MSDN Library Visual Studio 6.0 > DDK Documentation > Windows 95 Device Driver Kit > Design and Implementation Guide > Audio Device Drivers > Reference > Messages
[MSDN Library June 1998] WODM_GETVOLUME (60.4242424242424%)
MSDN Library Visual Studio 6.0 > DDK Documentation > Microsoft Windows NT 4.0 DDK > Multimedia Drivers > Audio Device Drivers > Audio Driver Reference > Messages, User-Mode Audio Drivers
[MSDN Library September 1992] WODM_GETVOLUME (59.8293502230884%)
Product Documentation > Windows 3.1 DDK > Multimedia Device Adaptation Guide > Chapter 2 Audio Device Drivers > Audio Device Driver Message Reference