QPushButton -- Round shape

[Oleg]

It can be simply achieved with style sheets:

button->setStyleSheet("
border-image: url(button.png) 3 10 3 10;
border-top: 3px transparent;
border-bottom: 3px transparent; 
border-right: 10px transparent;
border-left: 10px transparent;
");

button->setStyleSheet("
border-image: url(button.png) 3 10 3 10;
border-top: 3px transparent;
border-bottom: 3px transparent; 
border-right: 10px transparent;
border-left: 10px transparent;
");

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Sample from Qt Documentation. More here: http://doc.trolltech.com/4.6/stylesheet.html