应用程序向导提供标准菜单，如果选择了“可停靠工具栏”选项，则为命令提供一组工具栏按钮。
The application wizard supplies standard menus and, if you choose the Dockable toolbar option, a set of toolbar buttons for the commands.
提供此区域是为了放置可停靠的工具栏，如为应用程序创建的默认工具栏。
This area is provided to contain dockable toolbars, such as the default toolbar created for the application.
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