QT处理汉字乱码

 

 #include <QtGui/QApplication>
 #include "mainwindow.h"
 #include<QTextCodec>//add
 int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
     QTextCodec::setCodecForTr(QTextCodec::codecForLocale());//add
     MainWindow w;
     w.show();
     return a.exec();
 }