This function fills the caller's buffer with the textual string associated with the given error code returned by the OS/2 multimedia function. It also contains a 16-bit entry point.

#define INCL_MCIOS2
#include <os2.h>

ULONG     ulError;    /*  Error code. */
PSZ       pszBuffer;  /*  Pointer to application's buffer. */
USHORT    usLength;   /*  Length of buffer. */
ULONG     rc;         /*  Return code. */

rc = mciGetErrorString(ulError, pszBuffer,
       usLength);