public static GlfwWindowFocusCallback SetWindowFocusCallback(GlfwWindow window, GlfwWindowFocusCallback cbfun)
{
windowFocusFun = cbfun;
return(GlfwCore.glfwSetWindowFocusCallback(window, cbfun));
}
internal static extern GlfwWindowFocusCallback glfwSetWindowFocusCallback(GlfwWindow window,
GlfwWindowFocusCallback cbfun);