OpenGL in MS Windows
hasn’t contributed to OpenGL since version 1.1.
However, much has changed in the 20 years!
accesses more recent OpenGL functionality through extensions.
(the GL Extension Wrangler) makes this easy, providing access to all the
function pointers supported by the driver.
GLEW is available at: http://glew.sourceforge.net/
must initialise GLEW using a temporary OpenGL 1.1 rendering context. Once GLEW is initialised, this rendering
context is deleted and one can create a more modern rendering context.