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copied!<p>You should look into the QGraphicsView instead of what you are doing, it has this all built in already.</p> <p><a href="http://doc.qt.nokia.com/4.7-snapshot/qgraphicsview.html" rel="nofollow">http://doc.qt.nokia.com/4.7-snapshot/qgraphicsview.html</a></p> <p><a href="http://doc.qt.nokia.com/4.7-snapshot/qgraphicsscene.html" rel="nofollow">http://doc.qt.nokia.com/4.7-snapshot/qgraphicsscene.html</a></p> <pre><code>from PyQt4 import QtGui, QtCore class 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_() </code></pre> <p><strong>Edit: Showing how to create a QPainterPath</strong></p> <pre><code>from PyQt4 import QtGui, QtCore class 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_() </code></pre>

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