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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 

file: /Techref/os/win/api/win32/struc/src/str03_13.htm, 2KB, , updated: 2000/4/7 12:20, local time: 2025/5/4 13:31,
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