| UID | title | description | helpviewer_keywords | old-location | tech.root | ms.assetid | ms.date | ms.keywords | req.header | req.include-header | req.target-type | req.target-min-winverclnt | req.target-min-winversvr | req.kmdf-ver | req.umdf-ver | req.ddi-compliance | req.unicode-ansi | req.idl | req.max-support | req.namespace | req.assembly | req.type-library | req.lib | req.dll | req.irql | targetos | req.typenames | req.redist | ms.custom | f1_keywords | dev_langs | topic_type | api_type | api_location | api_name | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NS:dbt._DEV_BROADCAST_VOLUME |
DEV_BROADCAST_VOLUME (dbt.h) |
Contains information about a logical volume. |
|
base\dev_broadcast_volume_str.htm |
base |
8ce644d9-1e95-458e-924f-67bd37831048 |
12/05/2018 |
DBTF_MEDIA, DBTF_NET, DEV_BROADCAST_VOLUME, DEV_BROADCAST_VOLUME structure, PDEV_BROADCAST_VOLUME, PDEV_BROADCAST_VOLUME structure pointer, _win32_dev_broadcast_volume_str, base.dev_broadcast_volume_str, dbt/DEV_BROADCAST_VOLUME, dbt/PDEV_BROADCAST_VOLUME |
dbt.h |
Windows |
Windows XP |
Windows Server 2003 |
Windows |
DEV_BROADCAST_VOLUME |
19H1 |
|
|
|
|
|
|
Contains information about a logical volume.
The size of this structure, in bytes.
Set to DBT_DEVTYP_VOLUME (2).
Reserved; do not use.
The logical unit mask identifying one or more logical units. Each bit in the mask corresponds to one logical drive. Bit 0 represents drive A, bit 1 represents drive B, and so on.
This parameter can be one of the following values.
| Value | Meaning |
|---|---|
|
Change affects media in drive. If not set, change affects physical device or drive. |
|
Indicated logical volume is a network volume. |
Although the dbcv_unitmask member may specify more than one volume in any message, this does not guarantee that only one message is generated for a specified event. Multiple system features may independently generate messages for logical volumes at the same time.
Messages for media arrival and removal are sent only for media in devices that support a soft-eject mechanism. For example, applications will not see media-related volume messages for floppy disks.
Messages for network drive arrival and removal are not sent whenever network commands are issued, but rather when network connections will disappear as the result of a hardware event.