如何在WxPython图形用户界面中拖动图像对象？

import wx

class ImagePanel(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent)
        self.SetBackgroundStyle(wx.BG_STYLE_CUSTOM)
        self.Bind(wx.EVT_PAINT, self.on_paint)
        self.Bind(wx.EVT_LEFT_DOWN, self.on_left_down)
        self.Bind(wx.EVT_LEFT_UP, self.on_left_up)
        self.Bind(wx.EVT_MOTION, self.on_motion)
        self.image = wx.Bitmap("image.jpg")  # 替换为你的图像路径
        self.pos = None
        self.dragging = False

    def on_paint(self, event):
        dc = wx.AutoBufferedPaintDC(self)
        dc.Clear()
        dc.DrawBitmap(self.image, 0, 0)

    def on_left_down(self, event):
        self.pos = event.GetPosition()
        self.dragging = True

    def on_left_up(self, event):
        self.pos = None
        self.dragging = False

    def on_motion(self, event):
        if self.dragging:
            new_pos = event.GetPosition()
            dx = new_pos.x - self.pos.x
            dy = new_pos.y - self.pos.y
            self.pos = new_pos
            self.Move(self.GetPosition() + wx.Point(dx, dy))

class MainFrame(wx.Frame):
    def __init__(self):
        super().__init__(None, title="拖动图像对象示例", size=(400, 300))
        panel = ImagePanel(self)
        self.Show()

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