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Inside Macintosh: Sound /
Chapter 2 - Sound Manager / Sound Manager Reference
Sound Manager Routines / Controlling Volume Levels

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Important: Inside Macintosh: Sound is deprecated as of Mac OS X v10.5. For new audio development in Mac OS X, use Core Audio. See the Audio page in the ADC Reference Library.

GetSysBeepVolume

You can use the GetSysBeepVolume function to determine the current volume of the system alert sound.

FUNCTION GetSysBeepVolume (VAR level: LongInt): OSErr;
level
On exit, the current volume level of the system alert sound.
DESCRIPTION
The GetSysBeepVolume function returns, in the level parameter, the current volume level of the system alert sound. The values returned in the high and low words of the level parameter range from 0 (silence) to $0100 (full volume).

SPECIAL CONSIDERATIONS
The GetSysBeepVolume function is available only in versions 3.0 and later of the Sound Manager. You can call this function at interrupt time.

ASSEMBLY-LANGUAGE INFORMATION
The trap macro and routine selector for the GetSysBeepVolume function are
Trap macroSelector
_SoundDispatch$02240024

RESULT CODES
noErr0No error
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© Apple Computer, Inc.
2 JUL 1996