Introduction - If you have any usage issues, please Google them yourself
Realize the use of OpenGL graphics rendering of a 2D two-dimensional control (GDI too slow to solve the problem) the source code: after the author is busy with a project needs a lot of two-dimensional graphics rendering. Started thinking about the use of GDI, but a lot of GDI for rendering the image is really is too slow, so a solution is: the use of OpenGL to achieve a two-dimensional graphics rendering user controls.