How do I get the wxpython combo box selection and change value?

Question

# -*- coding: utf-8 -*-
import wx


class Main(wx.Frame):
    def __init__(self):
        wx.Frame.__init__(self, None, size=(430,550))
        self.mainPanel = wx.Panel(self, size=(0,500))

        self.data1 = [1,2,3]
        self.data2 = ['google','amazon']

        self.listCtrl = wx.ListCtrl(self.mainPanel, size=(0,0), style=wx.LC_REPORT|wx.BORDER_SUNKEN)
        self.listCtrl.InsertColumn(0, 'ONE', format=wx.LIST_FORMAT_CENTRE, width=wx.LIST_AUTOSIZE_USEHEADER)
        self.listCtrl.InsertColumn(1, 'TWO', format=wx.LIST_FORMAT_CENTRE, width=wx.LIST_AUTOSIZE)
        self.listCtrl.InsertColumn(2, 'THREE', format=wx.LIST_FORMAT_CENTRE, width=wx.LIST_AUTOSIZE)

        self.ComboBoxs = wx.ComboBox(self.mainPanel, choices=self.data2, style=wx.CB_READONLY)
        self.ComboBoxs.Bind(wx.EVT_COMBOBOX, self.ComboSelect, self.ComboBoxs)

        self.textLabel = wx.StaticText(self.mainPanel)
        self.autoRefreshCount = 0

        self.BoxSizer = wx.BoxSizer(wx.VERTICAL)
        self.BoxSizer.Add(self.ComboBoxs, 0, wx.ALL, 5)
        self.BoxSizer.Add(self.listCtrl, 1, wx.EXPAND | wx.ALL, 5)
        self.BoxSizer.Add(self.textLabel, 0, wx.EXPAND | wx.ALL, 5)
        self.mainPanel.SetSizer(self.BoxSizer)

        self.timer = wx.Timer(self)
        self.Bind(wx.EVT_TIMER, self.autoRefresh, self.timer)
        self.timer.Start(5000)

        self.ComboSelect(self)

    def ComboSelect(self, event):
        self.listCtrl.Append(self.data1)

    def autoRefresh(self, evnet):
        if self.ComboBoxs.GetStringSelection() in self.data2:
            self.ComboSelect(self)
            self.textLabel.SetLabel('count : ' + str(self.autoRefreshCount))
            self.autoRefreshCount += 1
        else:
            self.textLabel.SetLabel('count : ' + str(0))
            self.autoRefreshCount = 0

if __name__ == '__main__':
    app = wx.App()
    frame = Main()
    frame.Show(True)
    app.MainLoop()

I have created an automatic import after the combo box selection value.

If the problem changes the combo box selection, the changed value self.textLabel.SetLabel ('count:' + str (self.autoRefreshCount)) must be initialized.

I've tried a lot but I do not know how to do it.

if self.ComboBoxs.GetStringSelection () in self.data2: There seems to be a problem in the conditional expression.

Answer 1

It is not clear what you are trying to achieve in this code.
Your test if self.ComboBoxs.GetStringSelection() in self.data2: is always going to be True because self.ComboBoxs is read only and therefore cannot change, so whatever the selection is, it will always be in self.data2.
Try the following replacement and see if it gets you closer to what you want.

    def ComboSelect(self, event):
#        self.listCtrl.Append(self.data1)
        self.autoRefreshCount = 0

    def autoRefresh(self, evnet):
#        if self.ComboBoxs.GetStringSelection() in self.data2:
#            self.ComboSelect(self)
        self.listCtrl.Append(self.data1)
        self.textLabel.SetLabel('count : ' + str(self.autoRefreshCount))
        self.autoRefreshCount += 1
#        else:
#            self.textLabel.SetLabel('count : ' + str(0))
#            self.autoRefreshCount = 0

Edit:
based on your comment, I suspect that you want is EVT_TEXT this event fires when the text in the combobox changes.
Bind it like this and see if this was what you were looking for.

self.ComboBoxs.Bind(wx.EVT_TEXT, self.ComboChange, self.ComboBoxs)