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Autodocs
 Devices:
 narrator.device
  AbortIO
  CMD_FLUSH
  CMD_READ
  CMD_RESET
  CMD_START
  CMD_STOP
  CMD_WRITE
  CloseDevice
  OpenDevice
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GuruMeditation
Docs » Autodocs » narrator.device » CloseDevice

NAME

	CloseDevice - terminates access to the narrator device

SYNOPSIS

	CloseDevice(IORequest)
		       A1

FUNCTION

	Close invalidates the IO_UNIT and IO_DEVICE fields in the
	IORequest block, preventing subsequent IO until another
	OpenDevice.  CloseDevice also reduces the open count.  If 
	the count goes to 0 and the expunge bit is set, the device
	is expunged.  If the open count goes to zero and the delayed
	expunge bit is not set, CloseDevice sets the expunge bit.

INPUTS

	A valid IORequest block with its io_Message structure, and
	io_Device and io_Unit fields properly initialized.  These
	fields are initialized by OpenDevice.

RESULT

	CloseDevice invalidates the unit and device pointers in the
	IORequest block.

SEE ALSO

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