For some reasons, QPushButton shows up differently even though the code is mostly the same. Has anyone experienced the same issue and possibly have fixed it??

Here are the details:
Qt Code: 
  1. QApplication app(argc, argv);
  2.  
  3. 	QPushButton btnQuit("Exit");
  4. 	btnQuit.resize(75, 30);
  5. 	btnQuit.setFont(QFont("Times", 18, QFont::Bold));
  6.  
  7. 	QObject::connect(&btnQuit, SIGNAL(clicked()), &app, SLOT(quit()));
  8.  
  9. 	btnQuit.show();
  10.  
  11. 	return app.exec();
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results in:




Qt Code: 
  1. QApplication appl(argc, argv);
  2.  
  3. 	QWidget wnd;
  4. 	wnd.resize(200, 120);
  5.  
  6. 	QPushButton btnQuit("Exit", &wnd);
  7. 	btnQuit.resize(75, 30);
  8. 	btnQuit.setFont(QFont("Times", 18, QFont::Bold));
  9. 	btnQuit.setGeometry(10, 40, 180, 40);
  10. 	QObject::connect(&btnQuit, SIGNAL(clicked()), &appl, SLOT(quit()));
  11.  
  12. 	wnd.show();
  13. 	return appl.exec();
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results in: