MCI_AMP_GETDEVCAPS_PARMS

This structure contains parameters for the MCI_GETDEVCAPS message when sent to an amplifier-mixer device. It is used to query the specific capabilities of the device or a particular message within that device.

 typedef struct _MCI_AMP_GETDEVCAPS_PARMS {
   HWND       hwndCallback;  /* Window handle. */
   ULONG      ulReturn;      /* Return field. */
   ULONG      ulItem;        /* Not used. */
   USHORT     usMessage;     /* Message to query. */
   USHORT     usReserved0;   /* Reserved field. */
   ULONG      ulLength;      /* Length of structure. */
   ULONG      ulValue;       /* Value to determine capabilities. */
   ULONG      ulAttribute;   /* Flags modifying extended parms. */
   ULONG      ulExtended;    /* Flags. */
 } MCI_AMP_GETDEVCAPS_PARMS;
 
 typedef   MCI_AMP_GETDEVCAPS_PARMS  *PMCI_AMP_GETDEVCAPS_PARMS;