Possible bug in WxPython

[vtail]

Greetings.

When trying to run an example program from wxWiKi
http://wiki.wxpython.org/index.cgi/Getting_20Started, section 7.1.2, I
encounter following error. Could someone please explain it to me?

My python version is 
Python 2.2.1c2 (#33, Mar 26 2002, 13:04:18) [MSC 32 bit (Intel)] on
win32,
my wxpython version is 2.3.2.1 (from
c:/Python22/Lib/site-packages/wxPython/__version__.py)

I've attached the error message and the program that causes it.

Thanks for your help, Vtail.

====>

O:\_PUBLIC\Newdbase\Python\wxPython>python test4.pyw > aaa.txt
17:52:59: Debug: c:\Projects\wx\src\msw\app.cpp(542):
'UnregisterClass(no redraw
 canvas)' failed with error 0x00000584 (class still has open
windows.).
17:52:59: There were memory leaks.
17:52:59: ----- Memory dump -----
17:52:59: wxFrame at $FF8890, size 332
17:52:59: wxTextCtrl at $115EAA8, size 316
17:52:59: wxStatusBar at $778C38, size 260
17:52:59: wxMenu at $10D3AB0, size 112
17:52:59: wxMenuItem at $F9CE50, size 124
17:52:59: wxMenuItem at $F9CF08, size 124
17:52:59: wxMenuItem at $F9CFC0, size 124
17:52:59: wxMenuItem at $F9D078, size 124
17:52:59: wxMenuItem at $F9D130, size 124
17:52:59: wxMenuBar at $F8FD88, size 312
17:52:59: wxPyCallback at $F81C40, size 12
17:52:59: wxObject at $85DC50, size 28
17:52:59: wxPyCallback at $F81830, size 12
17:52:59: wxPyCallback at $F82638, size 12
17:52:59: wxBoxSizer at $F8FF98, size 96
17:52:59: wxButton at $F85128, size 264
17:52:59: wxSizerItem at $F7F998, size 60
17:52:59: wxButton at $10601A0, size 264
17:52:59: wxSizerItem at $F903A0, size 60
17:52:59: wxButton at $F90418, size 264
17:52:59: wxSizerItem at $F906D8, size 60
17:52:59: wxButton at $F90750, size 264
17:52:59: wxSizerItem at $F90A10, size 60
17:52:59: wxButton at $F82B08, size 264
17:52:59: wxSizerItem at $F82CE8, size 60
17:52:59: wxButton at $F82D60, size 264
17:52:59: wxSizerItem at $F82FF8, size 60
17:52:59: wxBoxSizer at $F83070, size 96
17:52:59: wxSizerItem at $F831A0, size 60
17:52:59: wxSizerItem at $F83218, size 60
17:52:59:
17:52:59:
17:52:59: ----- Memory statistics -----
17:52:59: 8 objects of class wxSizerItem, total size 480
17:52:59: 6 objects of class wxButton, total size 1584
17:52:59: 2 objects of class wxBoxSizer, total size 192
17:52:59: 1 objects of class wxObject, total size 28
17:52:59: 3 objects of class wxPyCallback, total size 36
17:52:59: 1 objects of class wxMenuBar, total size 312
17:52:59: 5 objects of class wxMenuItem, total size 620
17:52:59: 1 objects of class wxMenu, total size 112
17:52:59: 1 objects of class wxStatusBar, total size 260
17:52:59: 1 objects of class wxTextCtrl, total size 316
17:52:59: 1 objects of class wxFrame, total size 332
17:52:59:
17:52:59: Number of object items: 30
17:52:59: Number of non-object items: 0
17:52:59: Total allocated size: 4272
17:52:59:
17:52:59:

<====


====> test4.pyw
from wxPython.wx import *
import os
ID_ABOUT=101
ID_OPEN=102
ID_BUTTON1=110
ID_EXIT=200
class MainWindow(wxFrame):
    def __init__(self,parent,id,title):
        self.dirname=''
        wxFrame.__init__(self,parent,-4, title,
style=wxDEFAULT_FRAME_STYLE|
                                        wxNO_FULL_REPAINT_ON_RESIZE)
        self.control = wxTextCtrl(self, 1, style=wxTE_MULTILINE)
        self.CreateStatusBar() # A Statusbar in the bottom of the
window
        # Setting up the menu. 
        filemenu= wxMenu()
        filemenu.Append(ID_OPEN, "&Open"," Open a file to edit")
        filemenu.AppendSeparator()
        filemenu.Append(ID_ABOUT, "&About"," Information about this
program")
        filemenu.AppendSeparator()
        filemenu.Append(ID_EXIT,"E&xit"," Terminate the program")
        # Creating the menubar. 
        menuBar = wxMenuBar()
        menuBar.Append(filemenu,"&File") # Adding the "filemenu" to
the MenuBar
        self.SetMenuBar(menuBar)  # Adding the MenuBar to the Frame
content.
        EVT_MENU(self, ID_ABOUT, self.OnAbout)
        EVT_MENU(self, ID_EXIT, self.OnExit)
        EVT_MENU(self, ID_OPEN, self.OnOpen)

        self.sizer2 = wxBoxSizer(wxHORIZONTAL)
        self.buttons=[]
        for i in range(0,6):
            self.buttons.append(wxButton(self, ID_BUTTON1+i, "Button
&"+`i`))
            self.sizer2.Add(self.buttons[i],1,wxEXPAND)

        # Use some sizers to see layout options
        self.sizer=wxBoxSizer(wxVERTICAL)
        self.sizer.Add(self.control,1,wxEXPAND)
        self.sizer.Add(self.sizer2,0,wxEXPAND)

        #Layout sizers
        self.SetSizer(self.sizer)
        self.SetAutoLayout(1)
        self.sizer.Fit(self)

        self.Show(1)

    def OnAbout(self,e):
        d= wxMessageDialog( self, " A sample editor \n"
                            " in wxPython","About Sample Editor",
wxOK)
                            # Create a message dialog box 
        d.ShowModal() # Shows it 
        d.Destroy() # finally destroy it when finished. 

    def OnExit(self,e):
        self.Close(true)  # Close the frame. 

    def OnOpen(self,e):
        """ Open a file"""
        dlg = wxFileDialog(self, "Choose a file", self.dirname, "",
"*.*", wxOPEN)
        if dlg.ShowModal() == wxID_OK:
            self.filename=dlg.GetFilename()
            self.dirname=dlg.GetDirectory()
            f=open(os.path.join(self.dirname, self.filename),'r')
            self.control.SetValue(f.read())
            f.close()
        dlg.Destroy()


app = wxPySimpleApp()
frame = MainWindow(None, -1, "Sample editor")
frame.Show(1)

<====