GL setup question for Visual C++

Hey. I’m trying to setup open GL to run in Visual C++ but whenever I run any sample programs I get errors saying that there is a missing semi colon in the gl.h library. I can compile and run programs with the glut.h library. I’ve included the .lib files in the project settings, so that’s not the problem. Does anybody have any suggestions?

You must include windows.h header file before gl.h