如何从流加载html内容，然后如何创建样式表以在预览窗格中显示html文件（如HTML预览处理程序）

I am developing a Visual c++ application and I have to develp preview handler for HTML preview in preview pane. I have idea of doing the same for Xml documents(for xml files they create style sheet to accomplish this task) but I don't know how to do that for .html file.I am developing a Visual c++ application and I