David Borges David Borges - 2 months ago 24
Python Question

Align ListBox in Frame wxpython

I'm trying to figure out how to align a ListBox properly. As soon as i insert the lines of ListBox, the layout transforms into a mess.

#!/usr/bin/python
# -*- coding: utf-8 -*-
import wx

oplist=[]
with open("options.txt","r") as f:
for line in f:
oplist.append(line.rstrip('\n'))
print(oplist)

class Example(wx.Frame):

def __init__(self, parent, title):
super(Example, self).__init__(parent, title = title, size=(200,300))

self.InitUI()
self.Centre()
self.Show()

def InitUI(self):
p = wx.Panel(self)
vbox= wx.BoxSizer(wx.VERTICAL)
self.l1 = wx.StaticText(p, label="Enter number", style=wx.ALIGN_CENTRE)
vbox.Add(self.l1, -1, wx.ALIGN_CENTER_HORIZONTAL, 200)
self.b1 = wx.Button(p, label="Buton 1")
vbox.Add(self.b1, -1, wx.ALIGN_CENTER_HORIZONTAL,100)
self.flistbox= wx.ListBox(self,choices=oplist, size=(100,100), name="Field", wx.ALIGN_CENTER_HORIZONTAL)
vbox.Add(self.flistbox, -1, wx.CENTER, 10)
p.SetSizer(vbox)

app = wx.App()
Example(None, title="BoxSizer")
app.MainLoop()


Here the outputs with and without:
With ListBox
Without

Answer

The listbox is being parented to the frame by using self.

self.flistbox= wx.ListBox(
    self,choices=oplist, size=(100,100), name="Field", wx.ALIGN_CENTER_HORIZONTAL)

It should be parented to the panel by using p like the other controls.

self.flistbox= wx.ListBox(
    p,choices=oplist, size=(100,100), name="Field", wx.ALIGN_CENTER_HORIZONTAL)