This structure contains fields for the MCI_ESCAPE message.
typedef struct _MCI_ESCAPE_PARMS {
  HWND     hwndCallback;  /*  Window handle. */
  PSZ      pszCommand;    /*  Pointer to null terminated buffer. */
} MCI_ESCAPE_PARMS;
typedef   MCI _ ESCAPE _ PARMS   * PMCI _ ESCAPE _ PARMS ;