I have experience with procedural programming languages such as C, but not much with Object Oriented Programming. I can write simple programs with classes, overload operators, use inheritance and polymorphism. I have never used a library other than the STL.
Now I wanted to make software that could create a file on which a user could write comments and place images. My guess was that I would need a GUI library for that.
I would appreciate if you could suggest me any tutorial that could make my mind clearer on this topic.