The IOCTL_SERENUM_GET_PORT_NAME request returns the value of the PortName (or Identifier) entry value for the RS-232 port -- see Registry Settings for a Plug and Play Serial Device.
Input Buffer Length
The AssociatedIrp.SystemBuffer member points to a client-allocated buffer that Serenum uses to output the port name. The port name is a null-terminated Unicode string.
Output Buffer Length
The Parameters.DeviceIoControl.OutputBufferLength member is set to the size in bytes of a client-allocated output buffer.
If the request is successful, the Information member is set to the size in bytes of the null-terminated Unicode string that is returned in the client's output buffer.
The Status member is set to one of the following values:
|Header||ntddser.h (include Ntddser.h)|