多线程抽签VC++源码实现，若运行时出现“软件目录下不存在列表文件list.txt. 请手动载入或放置到软件目录下”，请将list.txt放置于EXE同级目录内再运行。-Multi-threaded balloting VC++ source code to achieve, if the runtime software directory does not exist list file list.txt manually loaded or placed into the software