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IOCTL_SERIAL_SET_BREAK_ON IOCTL (ntddser.h)

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The IOCTL_SERIAL_SET_BREAK_ON request sets the line control break signal active.

To set the line control break signal inactive, a client can use an IOCTL_SERIAL_SET_BREAK_OFF request.

Major code

IRP_MJ_DEVICE_CONTROL

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

IOCTL_SERIAL_SET_BREAK_OFF