IOCTL_USBPRINT_GET_PROTOCOL IOCTL

Retrieve the current printer protocol code of the USB printer interface.

Major Code

IRP_MJ_DEVICE_CONTROL

Input Buffer

NULL

Input Buffer Length

0

Output Buffer

Pointer to a DWORD

Output Buffer Length

sizeof(DWORD)

Status Block

Irp->IoStatus.Status is set to STATUS_SUCCESS if the request is successful. Otherwise, Status to the appropriate error condition as a NTSTATUS code.

For more information, see NTSTATUS Values.

Remarks

IOCTL_USBPRINT_GET_PROTOCOL returns one of the following values:

Defined constant Value
USB_PRINTER_PROTOCOL_BIDI 2
USB_PRINTER_PROTOCOL_IPPOVERUSB 4

Requirements

   
Header usbprint.h