java代码实现的打印预览程序，(不包手第三方控件)-java code to achieve the print preview process, (not included hand third-party control)

visioweb多比工作流设计器，基于页面设计的工作流设计器，实现页面控件拖拽，实现TOSQL、TOXML页面打印预览功能-visioweb Dobby Workflow Designer, page-based design workflow designer to achieve the page control drag achieve TOSQL, TOXML page print preview function