DDCMD_WRITE - Example Code

The following code illustrates how to perform a write to the physical device driver.

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

   ULONG           ulRC;                     /* Error return code      */
   HSTREAM         hstream;                  /* Stream handle          */
   DDCMDREADWRITE  ddcmdpb;                  /* Parameter block        */
   PDDCMDFN        pddcmdfn;                 /* Pointer to DDCMD entry */
                                             /* point                  */
   PVOID           pBuffer;                  /* Pointer to buffer      */

                             .
                             .
                             .
 /*--------------------------------------------------------------------*/
 /*  Perform a write to the physical device driver.                    */
 /*--------------------------------------------------------------------*/
   ddcmdpb.ulFunction = DDCMD_WRITE;
   ddcmdpb.hstream = hstream;
   ddcmdpb.pBuffer = pBuffer;
   ddcmdpb.ulBufferSize = 32768;

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