在pyqtgraph中使用鼠标单击时从图形中获取图形坐标

import pyqtgraph as pg
from pyqtgraph.Qt import QtCore, QtGui

class CustomPlotWidget(pg.PlotWidget):
    def __init__(self, parent=None):
        super().__init__(parent)
        
    def mousePressEvent(self, event):
        # 获取鼠标点击的位置
        pos = event.pos()
        
        # 将坐标转换为图形坐标
        view = self.getViewBox()
        coord = view.mapSceneToView(pos)
        
        # 打印图形坐标
        print("图形坐标：", coord)

app = QtGui.QApplication([])
widget = CustomPlotWidget()
widget.show()