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