A family of Microsoft suites of integrated development tools for building applications for Windows, the web, mobile devices and many other platforms. Miscellaneous topics that do not fit into specific categories.
winio@ is not part of C++, Visual Studio, or OpenGL. It belongs to the ClearWin+ library used with the Silverfrost FTN95 Fortran compiler. That’s why Visual Studio cannot find a header for it. To open a window in C++ for OpenGL, you’ll need to use a proper windowing library such as GLFW, FreeGLUT, or the Win32 API.