IDL新版本中添加了文本框鼠标选择的功能，demo即演示了该功能。-New version of IDL to add text box to choose the functions of the mouse, demo that demonstrate the feature.

利用C#调用IDL的一个DEMO，实现了自动获得IDL7.1的安装路径进行初始化；-IDL using C# call a DEMO, achieved automatically IDL7.1 to initialize the installation path