一个桌面雪花飘程序，很漂亮，实现原理较为复杂，但代码写得很规范。-A the desktop snow drift program, very beautiful, the realization of the principle is more complex, but the code is very standardized.

基于C++的圣诞礼物桌面现实，雪花飘洒等等，基于VS，代码简单明了效果清楚，易于学习-C++- based desktop real Christmas gift, snow drift, etc., based on the VS, the code is simple effect clear, easy-to-learn