Qt自绘菜单栏和工具栏

用到的头文件

#include <QMenu>
#include <QToolBar>
#include <QMenuBar>
#include <QAction>    

QMenu *fileMenu, *editMenu, *helpMenu;  //定义三个菜单选项  
QToolBar *fileToolBar, *editToolBar;//两个工具栏
QAction *newAct, *cutAct, *copyAct, *pasteAct, *aboutQtAct;//五个动作

void newFileSlot();//一个槽函数，对应打开动作

.cpp文件

    fileMenu = new QMenu(this);

    editMenu = new QMenu(this);

    helpMenu = new QMenu(this);

    //填充菜单子节点

    newAct = new QAction(QIcon( ":/images/new" ), tr( "new" ), this );

    newAct->setShortcut(tr("Ctrl+N" ));

    newAct->setStatusTip(tr("newFile" ));

    connect(newAct, SIGNAL(triggered()), this, SLOT(newFile()));

    cutAct = new QAction(QIcon( ":/images/cut" ), tr( "cut" ), this );

    cutAct->setShortcut(tr("Ctrl+X" ));

    cutAct->setStatusTip(tr("cutContent" ));

    copyAct