IOCTL_INTERNAL_GET_PARALLEL_PNP_INFO IOCTL (parallel.h)
The IOCTL_INTERNAL_GET_PARALLEL_PNP_INFO request returns Plug and Play information about a parallel port.
For more information, see Obtaining Information About a ParallelPort.
Major code
IRP_MJ_INTERNAL_DEVICE_CONTROL
Input buffer
A PARALLEL_PNP_INFORMATION structure.
Input buffer length
The Parameters.DeviceIoControl.OutputBufferLength member is set to the size, in bytes, of a PARALLEL_PNP_INFORMATION structure.
Output buffer
The AssociatedIrp.SystemBuffer member points to a PARALLEL_PNP_INFORMATION structure that the client allocates to output Plug and Play information.
Output buffer length
The size of a PARALLEL_PNP_INFORMATION structure.
Status block
The Information member is set to zero.
The Status member is set to one of the generic status values returned by internal device control requests for parallel ports or to the following value:
STATUS_BUFFER_TOO_SMALL
The value of Parameters.DeviceIoControl.OutputBufferLength is less than the size, in bytes, of a PARALLEL_PNP_INFORMATION structure.
Requirements
| Requirement | Value |
|---|---|
| Header | parallel.h (include Parallel.h) |
See also
IOCTL_INTERNAL_GET_PARALLEL_PORT_INFO