IOCTL_SERIAL_SET_XOFF - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// ntddser.h

// CTL_CODE(0x001b, 0x00e, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_SERIAL_SET_XOFF 0x001B0038
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Windows Driver Kit DDI reference (ni-ntddser-ioctl_serial_set_xoff)

IOCTL_SERIAL_SET_XOFF IOCTL

Description

The IOCTL_SERIAL_SET_XOFF request emulates the reception of an XOFF (transmit off) character. The request stops reception of data. If automatic XON/XOFF flow control is not set, then a client must use a subsequent IOCTL_SERIAL_SET_XON request to restart reception of data.

Parameters

Major code

Input buffer

None.

Input buffer length

None.

Output buffer

None.

Output buffer length

None.

Input/output buffer

Input/output buffer length

Status block

The Information member is set to zero.

The Status member is set to one of the Generic Status Values for Serial Device Control Requests.

See also

IOCTL_SERIAL_SET_XON

View the official Windows Driver Kit DDI reference

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