qt(菜单栏,工具栏,状态栏，铆接部件，核心部件）

 //菜单栏
   QMenuBar *bar = menuBar();
   this->setMenuBar(bar);
   QMenu *fileObj =  bar->addMenu("文件");
   QMenu *fileEdit = bar->addMenu("编辑");
   QAction *newAct = fileObj->addAction("新建");
   fileObj->addSeparator();
   QAction *openAct = fileObj->addAction("打开");

   //工具栏
   QToolBar *toolB = new QToolBar(this);
   addToolBar(Qt::LeftToolBarArea,toolB);
   toolB->setAllowedAreas(Qt::LeftToolBarArea | Qt::RightToolBarArea);
   toolB->addAction(newAct);
   toolB->addSeparator();
   toolB->addAction(openAct);


   //状态栏
   QStatusBar *statusB = statusBar();
   setStatusBar(statusB);
   QLabel *lab = new QLabel(this);
   lab->setText("xiaozhoa");
   statusB->addWidget(lab);
   QLabel *labL = new QLabel("左侧提示",this);
   statusB->addPermanentWidget(labL);

   //铆接部件
   QDockWidget *dock = new QDockWidget(this);
   addDockWidget(Qt::BottomDockWidgetArea,dock);
   //设置停靠范围
   dock->setAllowedAreas(Qt::BottomDockWidgetArea | Qt::RightDockWidgetArea);


   //addDockWidget(Qt::RightDockWidgetArea,dock);
   //核心部件
   QTextEdit *edit = new QTextEdit(this);
   setCentralWidget(edit);