[Qt-interest] 'Back' button not working properly.

[Ravi_Kalepalli]

Hi everyone,
    I am having problems implementing the functionality of a 'Back' button.I am working on a Media gallery using Qt 4.4.3.
When  the gallery is opened,we see the first 10 pictures present in it(The 10 pictures/thumbnails are set on 10 QPushButtons).On clicking any of the 10 pics ,it gets enlarged (set on top of a QLabel).
Now, once the enlarged picture  is shown,I am thinking of giving a 'Back'button  so that the user can go back to the initial view showing the 10 thumbnails on the 10 pushbuttons.
I created a button 'back' and connected it to a slot 'back2gallery()' inside which I called the constructor again.
My constructor's name is 'Mediagallery()'.So, I wrote-
void Mediagallery::back2gallery()
    {
      Mediagallery();
    }

But,it's not working.I was thinking that it was simple...but,guess I did it wrong.
Please advice on how to get past this issue.
Thank you.
Ravi

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