演示了如何使位图(DIB)图象淡入淡出。本程序同时附加了一个利用全局内存来复制文件。由于图象的淡入淡出因其性能问题需要全局内存的使用，这附加的功能只是顺便加进而已。-Demonstrates how to make a bitmap (DIB) images fade. This program also added a global memory used to copy the files. As the image fades because of performance issues requires the use of global memory, which add additional features just by the way and then have.