DDCMD_STATUS - Example Code

The following code illustrates how to request status from the device.

#include        "os2.h"
#include        "os2me.h"
#include        "shdd.h"

  ULONG           ulRC;                     /* Error return code      */
  HSTREAM         hstream;                  /* Stream handle          */
  DDCMDSTATUS     ddcmdpb;                  /* Parameter block        */
  PDDCMDFN        pddcmdfn;                 /* Pointer to DDCMD entry */
                                            /* point                  */
                            .
                            .
                            .
/*--------------------------------------------------------------------*/
/*  Get the current stream time from the physical device driver.      */
/*--------------------------------------------------------------------*/
  ddcmdpb.ulFunction = DDCMD_STATUS;
  ddcmdpb.hstream = hstream;
  ddcmdpb.pStatus =NULL;                    /* Return stream time*/
  ddcmdpb.ulStatusSize = 0;


  if (ulRC = pddcmdfn (&ddcmdpb))
    return (ulRC);    /* error!*/