#if _MSC_VER >= 1600

#pragma execution_character_set("utf-8")

#endif 

//You can write a simple example like this  

#include <QApplication>

#include <QLabel>  

  #if _MSC_VER >= 1600

  #pragma execution_character_set("utf-8")

  #endif  

  int main(int argc, char *argv[])

  {

      QApplication a(argc, argv);

      QLabel label("???ó??ń??");

      label.show();  

      return a.exec();

  }  

//If other people can reproduce your problem, you can file a bug.  

// Coding: UTF-8(BOM)

#if defined(_MSC_VER) && (_MSC_VER >= 1600)

# pragma execution_character_set("utf-8")

#endif  

#include <QApplication>

#include <QTextCodec>

#include <QLabel>  

int main(int argc, char* argv[])

{

    QApplication app(argc, argv);  

   #if QT_VERSION < QT_VERSION_CHECK(5,0,0)

        #if defined(_MSC_VER) && (_MSC_VER < 1600)

                QTextCodec::setCodecForTr(QTextCodec::codecForName("GB18030-0"));

        #else

                QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));

        #endif

   #endif  

    QLabel *label = new QLabel(QObject::tr("你好！"));

    label->show();  

    return app.exec();

}