IOCTL_SERIAL_SET_XOFF IOCTL (ntddser.h)
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.
Major code
Input buffer
None.
Input buffer length
None.
Output buffer
None.
Output buffer length
None.
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.
Requirements
| Requirement | Value |
|---|---|
| Header | ntddser.h (include Ntddser.h) |
See also
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