PySide: QWidget不绘制背景颜色。

I am using PySide 1.2.1 with Python 2.7 and I need a widget to draw a colored background. In Qt Designer I created a simple window consisting of a label, a widget containing three other items and another label. For the widget containing the button, radio button and checkbox I set the I am using PySide 1.2.1 with Python 2.7 and I n