Qt中文乱码，设置字符集

#include <QtGui/QApplication>#include "mainwindow.h"#include <QTextCodec>int main(int argc, char *argv[]){    QApplication a(argc, argv);    QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));    MainWindow w;    w.setWindowFlags(w.windowFlags()&~Qt::WindowMaximizeButtonHint& ~Qt::WindowMinimizeButtonHint);    w.show();    //w.showMaximized();    return a.exec();}