PyQt5中QGraphicsScene获取mousePressEvent事件鼠标位置全都为0.0

Question

问题描述
PyQt5中，想在QGraphicsScene的mousePressEvent中获取鼠标位置，无论点哪，显示的都是[0.0,0.0]
问题出现的环境背景及自己尝试过哪些方法
网上没找到类似的问题
相关代码
//请把代码文本粘贴到下方（请勿用图片代替代码）
#这是继承QGraphicsScene的自定义类
classCARscene(QtWidgets.QGraphicsScene):
def__init__(self,parent=None):
super(CARscene,self).__init__(parent)
defmousePressEvent(self,QMouseEvent):
#这行代码是期望显示坐标，奈何永远都是[0.0,0.0]
print([QMouseEvent.pos().x(),QMouseEvent.pos().y()])
#这是主窗口的类，继承自QtDesigner设计的界面
classCDataMingQtUi(QtWidgets.QMainWindow,Ui_MainWindow):
def__init__(self):
super(CDataMingQtUi,self).__init__()
self.setupUi(self)
#CARgraphview是一个QGraphicView的实例
self.figure=plt.figure()
self.canvas=FigureCanvas(self.figure)
self.graph_sence=CARscene()
self.graph_sence.addWidget(self.canvas)
self.CARgraphview.setScene(self.graph_sence)
你期待的结果是什么？实际看到的错误信息又是什么？
期待显示鼠标单击的坐标实际显示的确是[0.0,0.0]，无论点哪都是这个值

Answer 1

改成用scenePosdefmousePressEvent(self,event):QGraphicsScene.mousePressEvent(self,event)e=event.scenePos()print(e)

Answer 2

一,引入QCursorfromPyQt5.QtimportQCursor二.绑定本类的eventFilterself.pb_heading.installEventFilter(self)三,在qevent.pos()处弹窗,即鼠标所在位置defeventFilter(self,qobject,qevent):qtype=qevent.type()#~print(qtype)#~ifqtype==QEvent.HoverMove:ifqtype==QEvent.HoverLeave:print("HoverLeave")returnTrueelifqtype==QEvent.HoverEnter:print("HoverEnter")print(qevent.pos())self.on_pb_heading_clicked(qevent.pos())returnTrueelse:returnFalse