DEV_BROADCAST_HDR

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

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