Qt字符转换

QTextCodec::setCodecForLocale(QTextCodec::codecForName("UTF-8"));
QString  str="中国人民";
char* ch;
// QByteArray ba = str.toLatin1();
QByteArray ba = str.toLocal8Bit();
ch=ba.data();
qDebug()<<ch;

QString str;
char *msg;
str = QString::fromLocal8Bit(msg);