问题 I want to make to make an application where just the drawn objects (ex. drawLine) is visible, not the background. So, if a user opens up the application, he/she can draw shapes, and only see the shapes drawn. I'm new to pyside, but I've found examples where only the widget is visible, but I don't think that applies to this problem. a = QPoint(22, 22) b = QPoint(444, 444) def __init__(self, parent=None): QWidget.__init__(self, parent) self.setGeometry(300, 300, 350, 350) self.setWindowTitle(