QT中文乱码问题

#include <QTextCodec>

int main(int argc, char *argv[])
{
    QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF8"));
    QTextCodec::setCodecForLocale(QTextCodec::codecForName("UTF8"));
    QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF8"));

...
}