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Document properties?


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Document has a Metadata property on it, which is a container for any type of metadata, organized by sections. Come up with a section name for your stuff, and toss whatever key/value pairs you want into it.

It also holds the EXIF metadata in a section named "$exif" (preferably, use Metadata.ExifSectionName instead of "$exif", or better yet use methods like GetExifValues(), RemoveExifValues(), ReplaceExifValues()).

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Also, each Layer has its own Metadata instance. So if you need to store per-layer metadata, prefer that instead of some encoding scheme on the document. It's been there since v2.5 (6 years), but I don't think anything (including Paint.NET) has used it yet. It will successfully persist, however.

Only EXIF metadata has a chance of being preserved when saving as a non-.PDN file type. Or, of course, if you save/load the Metadata, then your custom file type will do it. But JPG, PNG, etc. won't.

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  • 2 weeks later...

Thank you, Rick! Now I have another question: is there any way I can access the document being saved from the funciton OnCreateSaveConfigUI? I want to give different default values to some of the properties, depending on the original ones readen from the loaded file and stored as document metadata. Is this possible?

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