Working with images in C++, which library to choose?

Question

C++ / C#

I have VS 17 c++, I'm a beginner.
I need to write a program that will encrypt a message (any) and hide it in the picture by changing the RGB channels
. Tell me which library can be used to make this easier and how to install it.

Answer 1

If this is BMP - then everything is nowhere simpler - open the picture and everything except the title is stupid RGB in its raw form.
If something other than BMP - then what generally prevents you from google the library for the file format you need? There are many of them, and they are easy to google. For example https://github.com/LuaDist/libjpeg for jpeg