Create OpenGL context without framework on Windows

I learn from this blog and he's project. You can read detail from that blog.

The below are OpenGL documents:

• OpenGL Getting Started
• Creating OpenGL Context
• Load OpenGL Functions
• API and Extension Header Files

What's inside this project

• absolutely model OpenGL with version 4.x and use <GL/glcorearb.h> instead of <GL/gl.h> and <GL/glext.h>.
• compared to the project above, this project use draw commands to draw an triangle.
• this project is based on msys2, sorry now, I don't provide solution for visual studio.

How to compile

• download msys2, need gcc.
• then just make.
• run main.exe.

This is the runtime screenshot: