Inside Macintosh: Sound /

Chapter 3 - Sound Input Manager / Sound Input Manager Reference

Sound Input Manager Routines / Opening and Closing Sound Input Devices

SPBCloseDevice

You can use the SPBCloseDevice function to close a sound input device.

FUNCTION SPBCloseDevice (inRefNum: LongInt): OSErr;

inRefNum

The device reference number of the sound input device to close.

DESCRIPTION

The SPBCloseDevice function closes a device that was previously opened by SPBOpenDevice and whose device reference number is specified in the inRefNum parameter.

SPECIAL CONSIDERATIONS

Because the SPBCloseDevice function moves or purges memory, you should not call it at interrupt time.

ASSEMBLY-LANGUAGE INFORMATION

The trap macro and routine selector for the SPBCloseDevice function are

Trap macro	Selector
_SoundDispatch	$021C0014

RESULT CODES

noErr	0	No error
siBadRefNum	-229	Invalid reference number