现代图形用户界面开发工具倾向于为创建对话框提供便捷的方式，但是对在文档窗口中添加控件或创建直接操作习惯用法的支持通常没有那么好。

• Our modern GUI-building tools tend to make dialogs easy to create, but adding controls to the surface of a document window or creating direct-manipulation idioms is generally not supported by these handy tools.