如何在wx.ComboBox弹出窗口的悬停(或每个)项的右侧添加“移除按钮”

import wx

class MyComboPopup(wx.ComboPopup):
    def __init__(self):
        super().__init__()

    def Create(self, parent):
        self.list = wx.ListCtrl(parent, style=wx.LC_REPORT|wx.LC_SINGLE_SEL)
        self.list.InsertColumn(0, 'Items')
        self.list.InsertColumn(1, 'Remove')
        self.list.SetColumnWidth(0, 150)
        self.list.SetColumnWidth(1, 70)
        self.list.Bind(wx.EVT_LIST_ITEM_SELECTED, self.OnItemSelected)
        self.list.Bind(wx.EVT_LIST_ITEM_DESELECTED, self.OnItemDeselected)
        self.list.Bind(wx.EVT_LIST_ITEM_ACTIVATED, self.OnItemActivated)
        self.list.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)
        self.list.Bind(wx.EVT_LEFT_UP, self.OnLeftUp)
        self.list.Bind(wx.EVT_MOTION, self.OnMotion)
        self.list.Bind(wx.EVT_LEAVE_WINDOW, self.OnLeaveWindow)
        self.list.Bind(wx.EVT_LIST_COL_CLICK, self.OnColClick)
        self.list.Bind(wx.EVT_LIST_COL_RIGHT_CLICK, self.OnColRightClick)
        self.list.Bind(wx.EVT_LIST_COL_BEGIN_DRAG, self.OnColBeginDrag)
        self.list.Bind(wx.EVT_LIST_COL_DRAGGING, self.OnColDragging)
        self.list.Bind(wx.EVT_LIST_COL_END_DRAG, self.OnColEndDrag)
        self.list.Bind(wx.EVT_LIST_BEGIN_LABEL_EDIT, self.OnBeginEdit)
        self.list.Bind(wx.EVT_LIST_END_LABEL_EDIT, self.OnEndEdit)
        self.list.Bind(wx.EVT_LIST_DELETE_ITEM, self.OnDeleteItem)
        self.list.Bind(wx.EVT_LIST_DELETE_ALL_ITEMS, self.OnDeleteAllItems)
        self.list.Bind(wx.EVT_LIST_ITEM_RIGHT_CLICK, self.OnRightClick)
        self.list.Bind(wx.EVT_LIST_ITEM_MIDDLE_CLICK, self.OnMiddleClick)
        self.list.Bind(wx.EVT_LIST_ITEM_FOCUSED, self.OnItemFocused)
        self.list.Bind(wx.EVT_LIST_ITEM_DESELECTED, self.OnItemDeselected)
        self.list.Bind(wx.EVT_LIST_KEY_DOWN, self.OnKeyDown)
        self.list.Bind(wx.EVT_LIST_INSERT_ITEM, self.OnInsertItem)
        self.list.Bind(wx.EVT_LIST_ITEM_RIGHT_CLICK, self.OnRightClick)
        self.list.Bind(wx.EVT_LIST_ITEM_MIDDLE_CLICK, self.OnMiddleClick)
        self.list.Bind(wx.EVT_LIST_ITEM_FOCUSED, self.OnItemFocused)
        self.list.Bind(wx.EVT_LIST_ITEM_DESELECTED, self.OnItemDeselected)
        self.list.Bind(wx.EVT_LIST_KEY_DOWN, self.OnKeyDown)
        self.list.Bind(wx.EVT_LIST_INSERT_ITEM, self.OnInsertItem)

    def GetControl(self):
        return self.list

    def OnItemSelected(self, event):
        item = event.GetItem()
        index = item.GetId()
        # 处理选中项的逻辑
        pass

    def OnItemDeselected(self, event):
        item = event.GetItem()
        index = item.GetId()
        # 处理取消选中项的逻辑
        pass

    def OnItemActivated(self, event):
        item = event.GetItem()
        index = item.GetId()
        # 处理双击选中项的逻辑
        pass

    def OnLeftDown(self, event):
        # 处理鼠标左键按下的逻辑
        pass

    def OnLeftUp(self, event):
        # 处理鼠标左键释放的逻辑
        pass

    def OnMotion(self, event):
        # 处理鼠标移动的逻辑
        pass

    def OnLeaveWindow(self, event):
        # 处理鼠标离开窗口的逻辑
        pass

    def OnColClick(self, event):
        # 处理列点击的逻辑
        pass

    def OnColRightClick(self, event):
        # 处理列右键点击的逻辑
        pass

    def OnColBeginDrag(self, event):
        # 处理列开始拖拽的逻辑
        pass

    def OnColDragging(self, event):
        # 处理列拖拽中的逻辑
        pass

    def OnColEndDrag(self, event):
        # 处理列结束拖拽的逻辑
        pass

    def OnBeginEdit(self, event):
        # 处理开始编辑的逻辑
        pass

    def OnEndEdit(self, event):
        # 处理结束编辑的逻辑
        pass

    def OnDeleteItem(self, event):
        # 处理删除项的逻辑
        pass

    def OnDeleteAllItems(self, event):
        # 处理删除所有项的逻辑
        pass

    def OnRightClick(self, event):
        # 处理右键点击的逻辑
        pass

    def OnMiddleClick(self, event):
        # 处理中键点击的逻辑
        pass

    def OnItemFocused(self, event):
        # 处理项获取焦点的逻辑
        pass

    def OnItemDeselected(self, event):
        # 处理项取消选中的逻辑
        pass

    def OnKeyDown(self, event):
        # 处理键盘按下的逻辑
        pass

    def OnInsertItem(self, event):
        # 处理插入项的逻辑
        pass

import wx

app = wx.App()
frame = wx.Frame(None, title='ComboBox Demo')
panel = wx.Panel(frame)

combo = wx.ComboBox(panel, style=wx.CB_DROPDOWN|wx.CB_READONLY)
popup = MyComboPopup()
combo.SetPopupControl(popup)

sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(combo, 0, wx.EXPAND|wx.ALL, 10)
panel.SetSizer(sizer)

frame.Show()
app.MainLoop()