I'm a newbie too, so somebody will (surely) provide a better and more
complete explanation :-).
Your problem is you have "overriden" the wx.App.MainLoop (which obviously
stays in a loop of some kind processing windows events).
Your MainLoop() will execute the single line of code and then exit - which
will cause the entire program to exit as it is the last call in the program
I would suggest that you rename your MainLoop and then have it call the real
MainLoop i.e.
聽聽def ChangeTheText:
聽聽聽聽self.frame.out.AppendText("Hello")
聽聽聽聽self.MainLoop()
This should work (well, keep the app running at least, I haven't really
looked at the rest of your code :-))
Peter
路路路
-----Original Message-----
From: Nick Fisher [mailto:wxPython@nickdafish.com]
Sent: Friday, July 18, 2003 8:17 AM
To: wxPython-users@lists.wxwindows.org
Subject: [wxPython-users] Newbie confuzed......
Hello!
聽聽I'm trying (emphasis on the try) to learn wxPython and could do with a
little help 
When I run this script:
-----
from wxPython.wx import *
class MyFrame(wxFrame):
聽聽def __init__(self, parent, ID, title):
聽聽聽聽wxFrame.__init__(self, parent, ID, title, wxDefaultPosition,
wxSize(200,
150))
聽聽聽聽self.out = wxTextCtrl(self, 1, style=wxTE_DONTWRAP |
wxTE_READONLY |
wxTE_MULTILINE)
聽聽聽聽self.out.AppendText("Some Text\n")
聽聽聽聽self.out.AppendText("Some more text\n")
class MyApp(wxApp):
聽聽def OnInit(self):
聽聽聽聽self.frame = MyFrame(NULL, -1, "")
聽聽聽聽self.frame.Show(true)
聽聽聽聽self.SetTopWindow(self.frame)
聽聽聽聽return true
聽聽def MainLoop(self):
聽聽聽聽self.frame.out.AppendText("Hello")
app = MyApp(0)
app.MainLoop()
-----
I get this error:
-----
17:51:55: Debug: e:\projects\wx\src\msw\app.cpp(439):
'UnregisterClass(canvas)' failed with error 0x00000584 (class still has
open windows.).
-----
Any ideas why? I sure as heck don't. I'm running Python 2.2.2, wxPython
2.4 on a Win2k system.
Many thanks.....
聽聽Nick
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