pythoncard-users

[Pythoncard-users] Proper way to invoke child window

[<kc1...@ya...>]

Hi list,

What's the proper way to pass parameters to child
window?

For instance, if I do:

cw=model.childWindow(self, childWindowClass(a, b))

and it appears I can't expect that the __init__
routine in childWindowClass be:

class childWindowClass(model.Background):
   def __init__(self, a, b):

So, what exactly should I create childWindowClass
with?  I've been doing it with no parameters and then
try to set the parameters of the child window
afterwards but that's really ugly.

How should I pass parameters to a childWindow?

Thanks,

--
John Henry

Re: [Pythoncard-users] Proper way to invoke child window

[Brad A. <bra...@ma...>]

John Henry wrote:
>What's the proper way to pass parameters to child
>window?
>
>For instance, if I do:
>
>cw=model.childWindow(self, childWindowClass(a, b))
>
>and it appears I can't expect that the __init__
>routine in childWindowClass be:
>
>class childWindowClass(model.Background):
>    def __init__(self, a, b):
>
>So, what exactly should I create childWindowClass
>with?  I've been doing it with no parameters and then
>try to set the parameters of the child window
>afterwards but that's really ugly.
>
>How should I pass parameters to a childWindow?


You can't, as far as I know. It would be a nice feature
to add, but you can have the child window
request data from the parent via self.getParent().

Also, you can't use __init__ for PythonCard classes, you
have to use on_initialize; I recall that was due to
timing issues but someone else can probably explain
better.

Re: [Pythoncard-users] Proper way to invoke child window

[Kevin A. <al...@se...>]

On Aug 10, 2006, at 1:06 PM, kc1...@ya... wrote:

> Hi list,
>
> What's the proper way to pass parameters to child
> window?
>
> For instance, if I do:
>
> cw=model.childWindow(self, childWindowClass(a, b))
>
> and it appears I can't expect that the __init__
> routine in childWindowClass be:
>
> class childWindowClass(model.Background):
>    def __init__(self, a, b):
>
> So, what exactly should I create childWindowClass
> with?  I've been doing it with no parameters and then
> try to set the parameters of the child window
> afterwards but that's really ugly.
>
> How should I pass parameters to a childWindow?
>
> Thanks,
>
> --
> John Henry

Check out this reply from last year

http://article.gmane.org/gmane.comp.python.pythoncard/1346/ 
match=childwindow

The event handler you are creating the child window in has to finish  
executing before you can be sure that the underlying C++ control has  
"settled". The purpose of the on_initialize event for a background is  
to avoid all the nasty bugs that can occur on the different platforms  
if you try to do certain operations on controls during the underlying  
initialization. As Brad mentioned, you can get data from the parent  
window, but often what you'll want to do is simply use wx.CallAfter()  
to set additional variables, call other methods, etc.

ka