Hi Guys, I would like to display a QLCDWidget with no background. Eventually I will make it frameless as well (so it's just a floating number), but I haven't been able to get rid of the background yet. The background show up black, rather than being absent:

Qt Code: 
  1. int main(int argc, char *argv[])
  2. {
  3. 	QApplication app(argc, argv);
  4.  
  5. 	//Set up the QLCDNumber
  6. 	QLCDNumber* lcdNumber = new QLCDNumber(3,0);
  7. 	lcdNumber->display(123);
  8. 	lcdNumber->setSegmentStyle(QLCDNumber::Flat);
  9.  
  10. 	//A palette with crazy colors to help see what's going on
  11. 	//Setting the background to Qt::transpatent here didn't seem to help
  12. 	QPalette palette = lcdNumber->palette();
  13. 	palette.setColor(QPalette::Active, QPalette::WindowText, Qt::green);
  14. 	palette.setColor(QPalette::Active, QPalette::Window, Qt::red);
  15. 	palette.setColor(QPalette::Inactive, QPalette::WindowText, Qt::blue);
  16. 	palette.setColor(QPalette::Inactive, QPalette::Window, Qt::yellow);
  17. 	lcdNumber->setPalette(palette);
  18.  
  19. 	//The following code should supress the background?
  20. 	//Also tried setAutoFillBackground instead of Qt::WA_OpaquePaintEvent
  21. 	//lcdNumber->setAutoFillBackground(true);
  22. 	lcdNumber->setAttribute(Qt::WA_OpaquePaintEvent, true);
  23. 	lcdNumber->setAttribute(Qt::WA_NoBackground, true);
  24. 	lcdNumber->setAttribute(Qt::WA_NoSystemBackground, true);
  25.  
  26. 	//Show the widget
  27. 	lcdNumber->show();
  28. 	return app.exec();
  29. }
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And the result is:



Any ideas how to get rid of the background?

Thanks!

David