public override void Init()
{
Initialise();
WindowHandle = CreateWindow(Width, Height, Title, IntPtr.Zero, IntPtr.Zero);
Context = new OpenGLContext(ref WindowHandle);
Context.Init();
SetWindowSizeCallback(WindowHandle, onWindowRezise);
SetWindowCloseCallback(WindowHandle, onWindowClosed);
SetKeyCallback(WindowHandle, onkeyDown);
SetMouseButtonCallback(WindowHandle, onMouseButton);
SetScrollCallback(WindowHandle, onMouseScroll);
SetCursorPosCallback(WindowHandle, onMouseMove);
Game.EventManager.RegisterListener <CloseWindowEvent>(Shutdown);
}