CDROM_EXCLUSIVE_LOCK_STATE structure (ntddcdrm.h)
The CDROM_EXCLUSIVE_LOCK_STATE structure is used by the CD-ROM class driver to report the exclusive access state of a CD-ROM device.
Syntax
typedef struct _CDROM_EXCLUSIVE_LOCK_STATE {
BOOLEAN LockState;
UCHAR CallerName[CDROM_EXCLUSIVE_CALLER_LENGTH];
} CDROM_EXCLUSIVE_LOCK_STATE, *PCDROM_EXCLUSIVE_LOCK_STATE;
Members
LockState
A Boolean value that indicates whether the CD-ROM device is locked for exclusive access. If TRUE, the device is locked. If FALSE, the device is not locked.
CallerName[CDROM_EXCLUSIVE_CALLER_LENGTH]
A NULL-terminated string that identifies the application or system component that has a lock on the CD-ROM device. The length of the string must be less than or equal to CDROM_EXCLUSIVE_CALLER_LENGTH bytes, including the NULL character at the end of the string. The string must contain alphanumerics (A - Z, a - z, 0 - 9), spaces, periods, commas, colons (:), semi-colons (;), hyphens (-), and underscores (_).
Remarks
The CD-ROM class driver reports the exclusive access state of a CD-ROM device in response to the IOCTL_CDROM_EXCLUSIVE_ACCESS request.
Requirements
| Requirement | Value |
|---|---|
| Header | ntddcdrm.h (include Ntddcdrm.h) |