您应该查看QGraphicsView而不是正在执行的操作，它已经内置了所有功能。
http://doc.qt.nokia.com/4.7-snapshot/qgraphicsview.html
http://doc.qt.nokia.com/4.7-snapshot/qgraphicsscene.html
from PyQt4 import QtGui, QtCoreclass Myframe(QtGui.QGraphicsView): def __init__( self, parent = None ): super(Myframe, self).__init__(parent) self.setScene(QtGui.QGraphicsScene()) # add some items x = 0 y = 0 w = 45 h = 45 pen = QtGui.QPen(QtGui.QColor(QtCore.Qt.green)) brush = QtGui.QBrush(pen.color().darker(150)) item = self.scene().addEllipse(x, y, w, h, pen, brush) item.setFlag(QtGui.QGraphicsItem.ItemIsMovable)if ( __name__ == '__main__' ): app = QtGui.QApplication([]) f = Myframe() f.show() app.exec_()
编辑：显示如何创建QPainterPath
from PyQt4 import QtGui, QtCoreclass Myframe(QtGui.QGraphicsView): def __init__( self, parent = None ): super(Myframe, self).__init__(parent) scene = QtGui.QGraphicsScene() self.setScene(scene) # add some items x = 0 y = 0 w = 45 h = 45 pen = QtGui.QPen(QtGui.QColor(QtCore.Qt.green)) brush = QtGui.QBrush(pen.color().darker(150)) item = scene.addEllipse(x, y, w, h, pen, brush) item.setFlag(QtGui.QGraphicsItem.ItemIsMovable) # create an open path path = QtGui.QPainterPath() path.moveTo(-w, -h) path.lineTo(-w, h) path.lineTo(w, h) path.lineTo(w, -h) clr = QtGui.QColor('blue') clr.setAlpha(120) brush = QtGui.QBrush(clr) pen = QtGui.QPen(QtCore.Qt.NoPen) fill_item = scene.addRect(-w, y, w*2, h, pen, brush) path_item = scene.addPath(path)if ( __name__ == '__main__' ): app = QtGui.QApplication([]) f = Myframe() f.show() app.exec_()
