How to set an application icon in Qt
<p>I have some trouble trying to set an icon for my QT application.</p>

<p>The icon is named "room.ico" and is on the same directory as the source file.</p>

<p>Here is the code :</p>

<pre><code>#include &lt;QApplication&gt;
#include &lt;QWidget&gt;

int main( int argc, char *argv[ ] )
{
   QApplication app( argc, argv) ;
   QWidget fenetre;
   fenetre.setWindowIcon(QIcon("room.ico")); // Nothing happens
   fenetre.setWindowTitle("Heloo");    
   fenetre.show();
   return app.exec() ;
}
</code></pre>

<p>I have tried to add <code>win32:RC_ICONS += room.ico</code> in the <code>.pro file</code> but that didn't work. I have also tried <code>"./room.ico"</code> but still no icon.</p>

<p>I have tried to use this :</p>

<pre><code>QPixmap pixmap = QPixmap ("room.ico");
fenetre.setWindowIcon(QIcon(pixmap));
</code></pre>

<p>And guess what !!! it didn't work ... i'm just a newbie to QT :p</p>

<p>Any suggestions will be appreciated , thanks</p>