VC++.net将彩色图像转换成黑白图像，有三种转换效果，大同小异，原理基本一样，源代码开源，VC++.NET图像处理参考实例源码下载。-And VC++.net convert a color image into a black and white image, there are three transition effects, more or less the same, the same basic principles, examples of source code downlo