在pyqt中更改和更新类之间的变量

Question

我需要在两个类之间更改两个变量的值，并在每次更改后不断更新它们。

这是代码：

class Window(QMainWindow):

  varA = None
  varB = None

  def __init__(self):
    #A lot of stuff in here to create a matplotlib figure

    self.linedit = LineEdit(self)  #Added while editing

    self.figure_canvas.mpl_connect("button_press_event", self.A)
    self.figure_canvas.mpl_connect("button_release_event", self.B)

  def A(self, event):
    varA = event.xdata
    #I need to change from here the value of variable1 in class 'LineEdit' 

  self.linedit.variable1 = LineEdit.varA  #Added while editing

  def B(self, event(:
    varB = event.xdata
    #I need to change from here the value of variable2 in class 'LineEdit'

    self.linedit.variable2 = LineEdit.varB  #Added while editing

class LineEdit(QDialog):
  variable1 = None
  variable2 = None

  def __init__(self, parent):
    QDialog.__init__(self, None)
    #I open a QDialog.ui file which have 2 QLineEdit

  def C(self):
    #Here i need to change the value of variable1 and variable2 and update those value
    #so i can show them

    self.lineEdit.setText(str(self.variable1))
    self.lineEdit2.setText(str(self.variable2))

我想要做的是在我点击它和释放按钮时保存鼠标的坐标。完成此操作后，必须在QLineEdit文件的ui中显示已保存的坐标。

我怎样才能做到这一点？还有另一种方法吗？

希望你能帮助我。

修改

我添加了你给我的建议。我之前尝试过这个但它不起作用，我的意思是当我点击matplotlib图时它不会改变值。