title: how to translate string added dynamicaly in Qapp with Qtranslator?
body: <p>i trying to created a Qt application multilanguage with Qt linguist.
  I place this code in an function of my MainWindow :</p>
  
  <pre><code>translator.load(":/lang/English");
  qApp-&gt;installTranslator(&amp;translator);
  ui-&gt;retranslateUi(this);
  </code></pre>
  
  <p>With the QTranslator  declare in my MainWindow.h and all my string i want translate enclose by tr() . But with that, all QObject added dynamicaly by the code of my MainWindow.cpp, for example the title of a QTableWidget, are not translated.
  If i place an other translator in my main.cpp, all my string are translate but i must created language button in my application and so i can't place translator in main.cpp.</p>
  
  <p>Do you have an idea to help me?</p>
  
  <p>Thx for your answers.</p>
  
  <p>Gat</p>