#inlcude <qtextcodec.h>
#include<qapplication.h>
int main(int argc, char ** argv)
{
QApplication app( argc, argv );
QTextCodec *codec = QTextCodec::codecForName("utf8");
QLabel label;
label.setText(codec->toUnicode("退出", strlen("退出")));;
label.show();
app.connect( &app, SIGNAL( lastWindowClosed() ), &app, SLOT( quit() ) );
return app.exec();
}