This function sends a media control interface message to the specified media device.

#define INCL_MCIOS2
#include <os2.h>

USHORT    usDeviceID;  /*  Device ID. */
USHORT    usMessage;   /*  Message action. */
ULONG     ulParam1;    /*  Message flags. */
PVOID     pParam2;     /*  Message data. */
USHORT    usUserParm;  /*  User-specified parameter. */
ULONG     rc;          /*  Return code. */

rc = mciSendCommand(usDeviceID, usMessage,
       ulParam1, pParam2, usUserParm);