DEV_BROADCAST_DEVICEINTERFACE_A structure (dbt.h)
Contains information about a class of devices.
Syntax
typedef struct _DEV_BROADCAST_DEVICEINTERFACE_A {
DWORD dbcc_size;
DWORD dbcc_devicetype;
DWORD dbcc_reserved;
GUID dbcc_classguid;
char dbcc_name[1];
} DEV_BROADCAST_DEVICEINTERFACE_A, *PDEV_BROADCAST_DEVICEINTERFACE_A;
Members
dbcc_size
The size of this structure, in bytes. This is the size of the members plus the actual length of the dbcc_name string (the null character is accounted for by the declaration of dbcc_name as a one-character array.)
dbcc_devicetype
Set to DBT_DEVTYP_DEVICEINTERFACE.
dbcc_reserved
Reserved; do not use.
dbcc_classguid
The GUID for the interface device class.
dbcc_name[1]
A null-terminated string that specifies the name of the device.
When this structure is returned to a window through the WM_DEVICECHANGE message, the dbcc_name string is converted to ANSI as appropriate. Services always receive a Unicode string, whether they call RegisterDeviceNotificationW or RegisterDeviceNotificationA.
Remarks
Note
The dbt.h header defines DEV_BROADCAST_DEVICEINTERFACE as an alias that automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that is not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP |
| Minimum supported server | Windows Server 2003 |
| Header | dbt.h |