说明：  在TC下使用鼠标的例子，调试环境为TC2.0或者TC3.0。运行这个程序需要tc提供的几个头文件。建议修改options菜单中的include目录项到tc的include的目录下，或把源程序拷贝到tc目录下运行。
(Use the mouse in the TC case, debugging environment TC2.0 or TC3.0. This process needs to run tc provide a few header files. Proposed to amend the options menu items include directory to include the tc directory, or copy the source code to run under tc directory.)