How do I put graphical interface in my C++ program? I know that i have to include the library, but how?

Answer 1

You can include openGl library ( open graphic library) and use their inbuilt function
http://www.ntu.edu.sg/home/ehchua/programming/opengl/CG_Introduction.html

Answer 2

so this is similar to QT library?Does that mean I have to decorate it manually?