QT中ComboBox如何獲取選中的文本內容下面程序出錯了，如何改正？

妳看看我寫的這段代碼吧，是選取QComboBox控件中的文本內容的。

intmain(intargc,char**argv)

{

QApplicationapp(argc,argv);

QComboBox*comboBox=newQComboBox;

QTextEdit*textEdit=new QTextEdit;

QVBoxLayout*layout=new QVBoxLayout;

layout->addWidget(textEdit);

layout->addWidget(comboBox);

comboBox->addItem(QObject::tr("ComboBoxItem01"));

comboBox->addItem(QObject::tr("ComboBoxItem02"));

comboBox-addItem(QObject::tr("ComboBoxItem03"));

QObject::connect(comboBox,SIGNAL(activated(QString)),textEdit,SLOT(insertPlainText(QString)));

QWidget mainWin;

mainWin.setLayout(layout);

mainWin.resize(770,550);

mainWin.show();

returnapp.exec();

}