如何获取wxpython面板的大小

import wx

class MyPanel(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent)
        
        self.Bind(wx.EVT_SIZE, self.on_size)
        
    def on_size(self, event):
        size = self.GetSize()
        width = size.GetWidth()
        height = size.GetHeight()
        print("面板宽度：", width)
        print("面板高度：", height)

class MyFrame(wx.Frame):
    def __init__(self):
        super().__init__(None, title="获取wxPython面板大小")
        
        panel = MyPanel(self)
        
        self.Show()

if __name__ == "__main__":
    app = wx.App()
    frame = MyFrame()
    app.MainLoop()