wXPython: Unable to get widget to enlarge/expand in size - dialog

Question

I can't get the listctrl widget to expand.
example picture: http://img109.imageshack.us/img109/3171/22488459.jpg
This code simply creates a dialog box and creates a CheckListCtrlMixin which is a ListCtrl with check boxes.
import wx
import re, os, sys
from wx.lib.mixins.listctrl import CheckListCtrlMixin, ListCtrlAutoWidthMixin
class CheckListCtrl(wx.ListCtrl, CheckListCtrlMixin, ListCtrlAutoWidthMixin):
def __init__(self, parent):
wx.ListCtrl.__init__(self, parent, -1, style=wx.LC_REPORT | wx.SUNKEN_BORDER)
CheckListCtrlMixin.__init__(self)
ListCtrlAutoWidthMixin.__init__(self)
class QueueDialog(wx.Dialog):
def __init__(self, parent, title):
super(QueueDialog, self).__init__(parent=parent,
title=title, size=(400, 500))
panel = wx.Panel(self)
vbox = wx.BoxSizer(wx.VERTICAL)
sb = wx.StaticBox(panel, label='Queue')
sbs = wx.StaticBoxSizer(sb, orient=wx.VERTICAL)
panel2 = wx.Panel(panel)
hbox3 = wx.BoxSizer(wx.VERTICAL)
hbox3.Add(panel2, proportion=1, flag=wx.EXPAND|wx.ALL)
listB = CheckListCtrl(panel2)
listB.InsertColumn(0, "Test", width=100)
listB.InsertColumn(1, "Status", wx.LIST_FORMAT_RIGHT)
dalist = ["heh", "ha", "hello"]
for name in dalist[0:3]:
index = listB.InsertStringItem(sys.maxint, name[0:-1])
sbs.Add(hbox3, proportion=1,flag=wx.EXPAND|wx.ALL)
panel.SetSizer(sbs)
hbox2 = wx.BoxSizer(wx.HORIZONTAL)
okButton = wx.Button(self, label='OK')
closeButton = wx.Button(self, label='Cancel')
hbox2.Add(okButton)
hbox2.Add(closeButton, flag=wx.LEFT, border=5)
vbox = wx.BoxSizer(wx.VERTICAL)
vbox.Add(panel, proportion=1, flag=wx.EXPAND|wx.ALL, border=10)
vbox.Add(hbox2, flag= wx.ALIGN_CENTER|wx.BOTTOM, border=10)
self.SetSizer(vbox)
def OnClose(self, e):
self.Destroy()
class window(wx.Frame):
def __init__(self, parent, id, title):
wx.Frame.__init__(self, parent, id, title, size=(600, 400))
e = QueueDialog(None, title='Queue')
e.ShowModal()
e.Destroy()
self.Centre()
self.Show(True)
app = wx.App(0)
window(None, -1, 'e')
app.MainLoop()

Answer 1

I don't know why you have the second panel, but it's really not needed and makes things more complex. Here's one version that works on my machine:
import wx
import re, os, sys
from wx.lib.mixins.listctrl import CheckListCtrlMixin, ListCtrlAutoWidthMixin
class CheckListCtrl(wx.ListCtrl, CheckListCtrlMixin, ListCtrlAutoWidthMixin):
def __init__(self, parent):
wx.ListCtrl.__init__(self, parent, -1, style=wx.LC_REPORT | wx.SUNKEN_BORDER)
CheckListCtrlMixin.__init__(self)
ListCtrlAutoWidthMixin.__init__(self)
class QueueDialog(wx.Dialog):
def __init__(self, parent, title):
super(QueueDialog, self).__init__(parent=parent,
title=title, size=(400, 500))
panel = wx.Panel(self)
vbox = wx.BoxSizer(wx.VERTICAL)
sb = wx.StaticBox(panel, label='Queue')
sbs = wx.StaticBoxSizer(sb, orient=wx.VERTICAL)
hbox3 = wx.BoxSizer(wx.VERTICAL)
listB = CheckListCtrl(panel)
listB.InsertColumn(0, "Test", width=100)
listB.InsertColumn(1, "Status", wx.LIST_FORMAT_RIGHT)
hbox3.Add(listB, 1, wx.EXPAND)
dalist = ["heh", "ha", "hello"]
for name in dalist[0:3]:
index = listB.InsertStringItem(sys.maxint, name[0:-1])
sbs.Add(hbox3, proportion=1,flag=wx.EXPAND|wx.ALL)
panel.SetSizer(sbs)
hbox2 = wx.BoxSizer(wx.HORIZONTAL)
okButton = wx.Button(self, label='OK')
closeButton = wx.Button(self, label='Cancel')
hbox2.Add(okButton)
hbox2.Add(closeButton, flag=wx.LEFT, border=5)
vbox = wx.BoxSizer(wx.VERTICAL)
vbox.Add(panel, proportion=1, flag=wx.EXPAND|wx.ALL, border=10)
vbox.Add(hbox2, flag= wx.ALIGN_CENTER|wx.BOTTOM, border=10)
self.SetSizer(vbox)
def OnClose(self, e):
self.Destroy()
class window(wx.Frame):
def __init__(self, parent, id, title):
wx.Frame.__init__(self, parent, id, title, size=(600, 400))
e = QueueDialog(None, title='Queue')
e.ShowModal()
e.Destroy()
self.Centre()
self.Show(True)
app = wx.App(0)
window(None, -1, 'e')
app.MainLoop()