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IMAPI_MEDIA_WRITE_PROTECT_STATE enumeration (imapi2.h)

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Defines values that indicate the media write protect status. One or more write protect values can be set on a given drive.

Syntax

typedef enum _IMAPI_MEDIA_WRITE_PROTECT_STATE {
  IMAPI_WRITEPROTECTED_UNTIL_POWERDOWN = 0x1,
  IMAPI_WRITEPROTECTED_BY_CARTRIDGE = 0x2,
  IMAPI_WRITEPROTECTED_BY_MEDIA_SPECIFIC_REASON = 0x4,
  IMAPI_WRITEPROTECTED_BY_SOFTWARE_WRITE_PROTECT = 0x8,
  IMAPI_WRITEPROTECTED_BY_DISC_CONTROL_BLOCK = 0x10,
  IMAPI_WRITEPROTECTED_READ_ONLY_MEDIA = 0x4000
} IMAPI_MEDIA_WRITE_PROTECT_STATE, *PIMAPI_MEDIA_WRITE_PROTECT_STATE;

Constants

 
IMAPI_WRITEPROTECTED_UNTIL_POWERDOWN
Value: 0x1
Power to the drive needs to be cycled before allowing writes to the media.
IMAPI_WRITEPROTECTED_BY_CARTRIDGE
Value: 0x2
The media is in a cartridge with the write protect tab set.
IMAPI_WRITEPROTECTED_BY_MEDIA_SPECIFIC_REASON
Value: 0x4
The drive is disallowing writes for a media-specific reason. For example:

  • The media was originally in a cartridge and was set to disallow writes when the media is not in a cartridge.

  • The media has used all available spare areas for defect management and is preventing writes to protect the existing data.
IMAPI_WRITEPROTECTED_BY_SOFTWARE_WRITE_PROTECT
Value: 0x8
A write-protect flag on the media is set. Various media types, such as DVD-RAM and DVD-RW, support a special area on the media to indicate the disc's write protect status.
IMAPI_WRITEPROTECTED_BY_DISC_CONTROL_BLOCK
Value: 0x10
A write-protect flag in the disc control block of a DVD+RW disc is set. DVD+RW media can persistently alter the write protect state of media by writing a device control block (DCB) to the media.

This value has limited usefulness because some DVD+RW drives do not recognize or honor this setting.
IMAPI_WRITEPROTECTED_READ_ONLY_MEDIA
Value: 0x4000
The drive does not recognize write capability of the media.

Requirements

Requirement Value
Minimum supported client Windows Vista, Windows XP with SP2 [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Header imapi2.h

See also

IDiscFormat2Data::get_WriteProtectStatus