QApplication::Session ID problem

[baluk]

Hi,

I want to get the session id of my app.For this I have used the QApplication class, but I can't able to get the id infact my app stops working when it get to the QApplication line. Here is my code used for the session id.

QApplication *app;
 QString session_ID = app->sessionId();
  qDebug()<< session_ID;

QApplication *app;
 QString session_ID = app->sessionId();
  qDebug()<< session_ID;

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Am I doing anything wrong or missing something.

Thank You,
Baluk