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建立一个MainWindows，取消创建Qt
1、添加菜单栏 #include <QMenuBar> ​ menuBar()->addMenu( "&File" ); menuBar()->addMenu( "&Edit" ); menuBar()->addMenu( "&View" ); menuBar()->addMenu( "&Simulate" ); menuBar()->addMenu( "&Help" );​


2、添加底部状态栏 #include <QStatusBar> statusBar()->showMessage( "QSimulate has started" );

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