How do I save user's selection when using listbox?

wxPython Users
1

Hello group,

How do I save user’s selection when using listbox? In the code below, in the function OnOkClick, user’s selection is saved in the frame object’s attriute choice. But after MainLoop, I guess since the frame is destroyed, the attribute becomes None. How do I get around this? Not sure if I made myself understood. Thanks for your help!

import wx

class LstBoxFrame(wx.Frame):

choice = None

def __init__(self, lst, title = "List of items", msg = "Select item"):

   
    wx.Frame.__init__(self, None, -1, title, pos = (300, 200))
    panel = wx.Panel(self)

    msgLbl = wx.StaticText(panel, -1, msg)
    topSizer = wx.BoxSizer(wx.HORIZONTAL)

    topSizer.Add(msgLbl,0)
               
    self.okBtn = wx.Button(panel, -1, "Ok")
    self.cancelBtn = wx.Button(panel, -1, "Cancel")
    btnSizer = wx.BoxSizer(wx.VERTICAL

)
btnSizer.Add(self.okBtn, 0)
btnSizer.Add((10,10), 0)
btnSizer.Add(self.cancelBtn, 0)

    self.Bind(wx.EVT_BUTTON, self.OnOkClick, self.okBtn)
    self.Bind

(wx.EVT_BUTTON, self.OnCancelClick, self.cancelBtn)

    self.listBox = wx.ListBox(panel, -1, (0, 0), (200, 400), lst, wx.LB_SINGLE)
   
    botSizer = wx.BoxSizer(wx.HORIZONTAL)
    botSizer.Add(self.listBox, 1, wx.GROW|wx.ALL, 10) 
    botSizer.Add(btnSizer, 0, wx.EXPAND|wx.ALL, 10)       
           
    # mainSizer is the top-level one that manages everything
    mainSizer = wx.BoxSizer(wx.VERTICAL)

    # now add the sizers to the mainSizer
    mainSizer.Add(topSizer, 0, wx.GROW|wx.ALL, 10)
    mainSizer.Add(botSizer, 1, wx.EXPAND|wx.ALL, 10)

    panel.SetSizer

(mainSizer)

    # Fit the frame to the needs of the sizer.  The frame will
    # automatically resize the panel as needed.  Also prevent the
    # frame from getting smaller than this size.
    mainSizer.Fit(self)
    mainSizer.SetSizeHints(self)
   
def OnOkClick(self, event):       
    choice = self.listBox.GetStringSelection()
    print choice
    self.Destroy()

def OnCancelClick(self, event):
    choice = None
    self.Destroy()

if name == “main”:
lst = [‘zero’, ‘one’, ‘two’, ‘three’, ‘four’, ‘five’,
‘six’, ‘seven’, ‘eight’, ‘nine’, ‘ten’, ‘eleven’,

              'twelve', 'thirteen', 'fourteen', 'fifteen']
app = wx.PySimpleApp()
frame = LstBoxFrame(lst)
frame.Show()
print frame.choice
app.MainLoop()
print frame.choice

Regards,

  • wcc