右键点击这个虚框，打开弹出式选单（图7），用它来添加或者维护已有的数据池构件元素。
Right-clicking on the grid opens the pop-up menu ( Figure 7) that you use to add or maintain the datapool structural elements already described here.
应用程序中的行为将是该处理程序首先显示其消息框，随后将显示虚方法处理程序中的可视变化。
The behavior in an application would be that first this handler would show its message box and then the visual change in the virtual method's handler would be shown.
应用程序中的行为将是该处理程序首先显示其消息框，随后将显示虚方法处理程序中的可视变化。
The behavior in an application would be that first this handler would show its message box and then the visual change in the virtual method's handler would be shown.
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