What is used for development in C ++ for different operating systems?

Question

C++ / C#

I am developing a desktop pet project and I want it to compile without changing the code for both Windows and Linux, and for anything where there is a MinGW compiler.
Is OpenGL suitable for this? What else can be used?

Answer 1

Qt. You can shake off the dust with wxWidgets.
But what does openGL have to do with it is not clear - it will also help, but still, if this is attached, it will be an overhead.
Well, by the way, it’s still possible that some defines will have to be done on the platforms.