一个基于VB的多文档窗体视图，多文档的操作界面，在Windows中是想当普遍和常见的，希望大家可以借鉴，应用在你的项目中。-VB-based multi-document form view, the operation of multi-document interface in Windows is to want to be a widespread and common, I hope you can learn from the application in your project.