使用Win-TC编写的简单图形界面，响应鼠标点击，实现菜单栏的弹出和收起。 纯C编写，带有源代码和执行文件。 具有参考学习作用-Win-TC using a simple graphical interface written in response to mouse clicks, to achieve a pop-up menu bar and away. Written in pure C, with source code and Execute the file. With ref