TIFF File Comments

When reading or updating TIFF comments, you must specify the comment type using the following constants.

For a loop counter:

Value	Meaning
CMNT_LAST	Last defined number for comments. To get all comments, you can use the comment type constant as a loop counter. The first constant is 0 and the last is CMNT_LAST.

For TIFF files: Each comment field can contain a character string. The maximum field size is 32K, except for the date-time field, which is always 20.

Please note that LEADTOOLS also supports IPTC Comments, which can be saved inside TIFF files. For more information, refer to IPTC Comments.

Value	Meaning
CMNT_SZARTIST	Person who created the image.
CMNT_SZCOPYRIGHT	Copyright notice.
CMNT_SZDATETIME	Date and time (YYYY:MM:DD HH:MM:SS). The field length is 20, counting the NULL terminator.
CMNT_SZDESC	Description of the image.
CMNT_SZHOSTCOMP	Computer and operating system in use.
CMNT_SZMAKE	Manufacturer of the equipment used to create the image.
CMNT_SZMODEL	Model name and number of the equipment.
CMNT_SZNAMEOFDOC	Name of the document from which the image was scanned.
CMNT_SZNAMEOFPAGE	Page name from which the image was scanned.
CMNT_SZSOFTWARE	Name and version of the software package used to create the image.

For more information about file comments, refer to Comment property (ILEADRasterIO) and ReadComment method (ILEADRasterIO).