这个是VB6.0的鼠标滚轮支持插件，安装后可使用滚轮进行移动。-This is a VB6.0 mouse wheel support for plug-in installed can use the scroll wheel to move it.

界面响应,用IDL开发的。如果用户在draw区域进行鼠标的左击、右击，键盘，以及滚轮的移动等操作，就会将这些全部显示在text内。-it is done by IDL.if one operate on the screen,it can write down what you have done.