2.2.1.3.6 VDS_DRIVE_LETTER_NOTIFICATION

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The VDS_DRIVE_LETTER_NOTIFICATION structure provides information about a drive letter notification.

 typedef struct _VDS_DRIVE_LETTER_NOTIFICATION {
   unsigned long ulEvent;
   WCHAR wcLetter;
   VDS_OBJECT_ID volumeId;
 } VDS_DRIVE_LETTER_NOTIFICATION;

ulEvent: Determines the drive-letter event for which an application will be notified; it MUST be one of the following values.

Value

Meaning

VDS_NF_DRIVE_LETTER_FREE

0x000000C9

The drive letter is no longer in use.

VDS_NF_DRIVE_LETTER_ASSIGN

0x000000CA

The drive letter has been assigned to a volume.

wcLetter: The drive letter that triggered the event, as a single uppercase or lowercase alphabetical (A-Z) Unicode character.

volumeId: The VDS object ID of the volume object to which the drive letter is assigned. If the drive letter is freed, the volume identifier is GUID_NULL.