给系统自带的“打开”对话框添加预览功能，类似于Photoshop可以预览图片，本程序可以预览文本文件。-Add the preview function to the system open file dialog. This program is similar to Photoshop s preview, and it can preview the text file.

I have a habit of using the standard windows controls as little as possible. If I can write my own control to do it then I will, It s kinda like reinventing the wheel but adding spinners. Anyways this is an article on a Vista Style button that I made