DEV_BROADCAST_HDR info  Overview  Group

The DEV_BROADCAST_HDR structure contains information about the device affected by a WM_DEVICECHANGE message.

typedef struct _DEV_BROADCAST_HDR {
    ULONG dbch_size; 

    ULONG dbch_devicetype; 

    ULONG dbch_reserved; 

} DEV_BROADCAST_HDR;
typedef DEV_BROADCAST_HDR *PDEV_BROADCAST_HDR;
 

Members

dbch_size

Size of this structure, in bytes.

dbch_devicetype

Type of device. Can be one of these values:

Value	Meaning
DBT_DEVTYP_OEM	OEM- or IHV-defined device type.
DBT_DEVTYP_VOLUME	Logical volume.
DBT_DEVTYP_PORT	Port device (serial or parallel).

dbch_reserved

Reserved; do not use.

See Also

WM_DEVICECHANGE