Qt 显示中文代码

#include <QApplication>
#include <QLabel>
#include <QTextCodec>
int main(int argc, char **argv){
//construct
QApplication app(argc, argv);
//construct label
QTextCodec *coder = QTextCodec::codecForName("utf-8");

QLabel qlab(coder->toUnicode("你好qt"));
qlab.show();
//afair loop
return app.exec();
}