How to use 8bf files in my own application

[Mathenay]

It is an image viewer that I wrote in pure C language.
I would like to be able to include 8bf files.
How could I do it?

Thank you to help me

[Ath]

Put them in a .zip file, accompanied by the documentation, and you'll be fine.

Btw, welcome to the forum

[Mathenay]

Yes, I am new
I have downloaded these plugins as an example.

[Ath]

It is an image viewer that I wrote in pure C language.
I would like to be able to include 8bf files.
How could I do it?

...

Yes, I am new
I have downloaded these plugins as an example.

I must have misunderstood your request
8BF is not a graphics file format, just a plugin format for Photoshop. I was originally under the impression you'd like to add that file-type to your forum-post, but it can also be read as if you want to add support for displaying these files to your application, so that's not going to work.
For adding the feature of using such plugins to your application I can only point you to the Adobe developer community, they know how to guide you in that direction.