VC++仿Windows关机屏变黑特效的源程序，实际上是屏幕由彩色变黑白，而且这一过程是渐变的，本人在网上搜罗过一些与此有关的代码，发现关机的代码差不多都一样，而对关机前的屏幕特效几乎没有涉及到，-VC++ black imitation of Windows Shutdown screen effects of the source, in fact the screen by the color change black and white, and this process is grad