Introduction
PNG File Comments
PNG has MMX optimized code for loading and saving files, and it supports comments. Comments can be saved when saving a PNG file, but comments inside existing files cannot be updated. The following comments are supported:
|
Value |
Meaning |
|---|---|
|
RasterCommentMetadataType.Artist |
Person who created the image. |
|
RasterCommentMetadataType.Copyright |
Copyright notice. |
|
RasterCommentMetadataType.DateTime |
Date and time (YYYY:MM:DD HH:MM:SS). The field length is 20, counting the NULL terminator. |
|
RasterCommentMetadataType.Description |
Description of the image. |
|
Manufacturer of the equipment used to create the image. |
|
|
Title of the image. |
|
|
RasterCommentMetadataType.Software NOTE: If you are using the Nag version of Leadtools.dll, this comment is fixed and cannot be changed. |
Name and version of software package used to create the image. |
|
RasterCommentMetadataType.Disclaimer |
String containing the disclaimer of the software used to create the image. |
|
RasterCommentMetadataType.Warning |
Warning statement associated with the software that created the image. |
|
Miscellaneous information. |
For more information about file comments, refer to RasterCodecs.ReadComment and RasterCodecs.WriteComment.
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