Re: [Pythoncard-users] Window frames

[Alex T. <al...@tw...>]

Alex Tweedly wrote:

> Tony Mullen wrote:
>
>> Hello,
>>
>> I'm new to PythonCard and to wxPython and I'm still working on getting
>> a clear understanding of how they work together.  I would like to
>> create windows in my application which do not have the header bar, or
>> in some cases with no frame at all (for example for a splash screen
>> widget).  I see in the PythonCard Framework Overview that various
>> window styles are not supported.  Is there a workaround for this?  
>>
> Not yet - but I'm looking into it now.:-)   I wanted this about six 
> months back - but not strongly enough to pursue it then; but I have 
> some ideas on how it might be tackled.
>
> I will say more later today.
>
I'm proposing that we implement this enhancement in two phases, as 
below. If no-one brings up any problems or objections over the next few 
days, I'll put this into CVS. It is (of course) fully backward compatible.

Overview:

A resource file contains a "style" for the background / window. This 
defaults to [] (and is usually omitted in that case), or it can 
currently take the value      ["resizeable"]    to indicate th window 
should be resizeable. All other style factors are fixed.

We will extend this to also allow this to be a list of strings which are 
wxWindow style constants - e.g.
          'style':['wx.SYSTEM_MENU', 'wx.CAPTION', 'wx.CLOSE_BOX'],



Phase 1.
(you can do this in the short term, even before any CVS change).

You'll need to edit in any style changes to the rsrc file by hand. I 
wouldn't be surprised if these are lost when the rsrc file is edited in 
the resourceEditor - so keep a copy if the values you need.

Change your local copy of PythonCard/model.py as follows (be *sure* to 
keep a safe copy)

Around line 640 (for latest CVS copy,  I think around line number 614 
for 0.8.1), you'll find

>         # KEA 2004-01-18
>         # have to explicitly declare the close box in wxPython 2.5
>         style = wx.MINIMIZE_BOX | wx.SYSTEM_MENU | wx.CAPTION | 
> wx.CLOSE_BOX
>         if aBgRsrc.style == ['resizeable']:
>             style = wx.DEFAULT_FRAME_STYLE

change that to

>         # KEA 2004-01-18
>         # have to explicitly declare the close box in wxPython 2.5
>         if aBgRsrc.style == []:
>             style = wx.MINIMIZE_BOX | wx.SYSTEM_MENU | wx.CAPTION | 
> wx.CLOSE_BOX
>         elif aBgRsrc.style == ['resizeable']:
>             style = wx.DEFAULT_FRAME_STYLE
>         else:
>             style = 0
>             for i in aBgRsrc.style:
>                 style |= eval(i)

(the long term fix will put this in a try:except clause - but you can 
get by without that for a few days ...)

Phase 2.

a. Add the try: except protection around the eval() statement
b. Extend the resourceEditor to support the definition of window styles.
(this isn't hard - I've got a basic version working, but will need more 
testing ...)

-- 
Alex Tweedly       http://www.tweedly.net



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