[Tutor] First step

[SA]

On 8/15/02 5:27 AM, "Pol Branckotte" <polbranckotte@skynet.be> wrote:

> I just try to define a window and later decide to make it visible:
> Here are the two programs, I can understand the error message generated by the
> first
> but not the one generated by the second
> What am I missing?
> How to make it happen?
> 
> 
> from wxPython.wx import *
> 
> class MyApp(wxApp):
>   def OnInit(self):
>       frame = wxFrame(NULL, -1, "hello from wxPy")
>       #frame.Show(true)
>       self.SetTopWindow(frame)
>       return true
> 
> app = MyApp(0)
> app.frame.Show(true)
> app.MainLoop()
> 
> attribute error: MyApp instance has no attribute 'frame'
> __________________________________________________
> 
> from wxPython.wx import *
> 
> class MyApp(wxApp):
>   def OnInit(self):
>       frame = wxFrame(NULL, -1, "hello from wxPy")
>       #frame.Show(true)
>       self.SetTopWindow(frame)
>       return true
> 
> app = MyApp(0)
> frame.Show(true)
> app.MainLoop()
> 
> name error name "frame" is not defined
> 
> 
Well, first it looks like app = MyApp(0) is passing the value 0 to wxApp.
I'm not 100% sure on this.

But I can tell you python is giving you the correct response. There is no
attribute frame because frame is not defined in the instance.

app.frame.Show(true) should be:
app.OnInit(true)

OnInit is the attribute frame is part of the function Oninit. (I believe)
Gregor is correct. Look back at the few emails I have been conversing with
Magnus on this very subject.

Good Luck.
SA


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