transparent background of the main widget

[nagpalma]

Hi ,

The widget in the "analogclock" example is transparent with respect with my widget. But, how can i make my widget transparent with respect with my desktop? (My widget is the base widget for all the other widget including the widget in the "analogclock").

I tryed to alter the widget's default palette with:

QPalette p(palette()); 
      p.setColor ( QPalette::Window, Qt::transparent);  
      setPalette(p);

QPalette p(palette()); 
      p.setColor ( QPalette::Window, Qt::transparent);  
      setPalette(p);

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but instead of a transparent background i got a black background !

I don't understand what happened.

Please, help me.

Regards,
Nuno