Re: [lmi] A validating schema for wxxrc?

[Evgeniy Tarassov]

On 6/8/07, Greg Chicares <address@hidden> wrote:
> Here's another example, using the same file:
>
> -             <bitmap>basicdlg.xpm</bitmap>
> +             <bitmap>basicdlg.XPM</bitmap>
>
> Suppose that such an X pixmap exists, and its name is all lowercase.
> Maybe it works under msw (just a guess), but won't under GNU/Linux.
> Or suppose it were misspelled as, say, 'basicdlg.xmp': that's a typo
> of which I know I'm capable.

It is very nice feature to have, but AFAIK it is not possible (in WXS
neither in RNG) to access filesystem information. But as you have
mentioned -- probably the best place to do such a validation would be
to check for files in C++ when the XRC files is first loaded:
wxXmlResource::Get()->Load("XXX.xrc");

> Here's an example of a few things that I guess would be caught at
> runtime, if someone actually loads this particular dialog, but which
> might be better to catch in a schema:
>
>   wxWidgets-2.8.3/samples/xrc/rc/derivdlg.xrc
>
> 37                 <object class="sizeritem">
> 38                     <flag>wxALIGN_CENTRE|wxALL</flag>
> 39                     <border>5</border>
> 40                     <object class="wxCheckBox" name="my_checkbox">
> 41                         <label>Enable listbox</label>
> 42                     </object>
> 43                 </object>
>
> Let me mangle that:
>
>                  <Objekt Klass="WxSizerItem">
>                      <flag>WxALIGN_IN_THE_CENTRE|wxBCE</flag>
>                      <border>cinq</border>
>                      <objet classe="wxChequeBox" nom="my_checkbox">
>
> I guess I don't often make mistakes like that, and I find them
> soon enough; but a schema would probably find them sooner, if I
> routinely used it before committing any wxxrc file.

That indeed would be a really good feature to have. Myself, I'm a
person that does a lot of errors (typing or spelling errors), that's
why working with XRC for me is rather painful experience (compared to
other tasks).

--
Best wishes,
Evgeniy Tarassov