title: How to costomize QMessageBox by setStyleSheet in form?
body: <p>I'm trying to create a QMessageBox in form class but when I run the program,the background of message box is the same with the form class so the setStyleSheet function is not working. Here is the sample of my code :</p>
  
  <pre><code>QMessageBox msg(this);
  msg.about(this,"hata","deneme");
  msg.setStyleSheet(QString::fromUtf8("background-color: rgb(241, 241, 241);"));
  msg.setWindowTitle("Hata");
  msg.show();
  </code></pre>
  
  <p>Any help much appreciated.</p>