From: "flukus@..." <flukus@...>
Date: 2008-06-19T19:58:43+09:00
Subject: Re: Using qt ruby

On Jun 19, 2:38 am, "richard.j.d...@gmail.com"
<richard.j.d...@gmail.com> wrote:
> On Jun 18, 1:12 pm, Stefano Crocco <stefano.cro...@alice.it> wrote:
>
> > On Wednesday 18 June 2008, flu...@gmail.com wrote:
>
> > > I'm not particularly new to ruby or QT but I'm having trouble getting
> > > the two to work nicely together.
>
> > > I have a TextEdit and I'm trying to call setExtraSelections on it.
> > > when I use the getter I get the error:
>
> > >  "Cannot handle 'QList<QTextEdit::ExtraSelection>' as return-type of
> > > QTextEdit::extraSelections (ArgumentError)"
>
> > > And likewise with the setter:
>
> > > "Cannot handle 'const QList<QTextEdit::ExtraSelection>&' as argument
> > > of QTextEdit::setExtraSelections"
>
> > > So how do you deal with Qlists in ruby?
>
> > > Also a few more general questions, please feel free to point me
> > > somewhere with answers like these but I searched long and hard and
> > > couldn't find any.
>
> > > Is there an API reference somewhere with rubyized method lists etc?
> > > For instance it took alot of reading and searching to find out the qts
> > > ExtraSelection class should be an OpenStruct.
>
> > > Any there any more gotchas like the qlist above and how enums are
> > > passed as ints?
>
> > > Any good documentation anywhere, what I could find online was very
> > > lacking and alot of google searches just turn up change logs.
>
> > Which version of QtRuby are you using? I'm using an old version from KDE4 svn
> > (I think it's more or less a month old) and I can create a new ExtraSelection,
> > but my test application crashes when I try to call
> > Qt::TextEditor.set_extra_selections. At any rate, I suggest you to post this
> > questions on the Qt/Korundum forum
> > (http://rubyforge.org/forum/forum.php?forum_id=723).
>
> > As for the documentation, I think you're right, there's not much information
> > about differences between QtRuby and C++ Qt. Yet, there aren't that many
> > differences (at least in my opinion).
>
> > By the way, I don't think ExtraSelection s should be OpenStruct s. At least in
> > the version I use, they're instances of Qt::TextEditor::ExtraSelection, just
> > as in C++. And as far as lists are concerned, I think they're always treated
> > as ruby Array s.
>
> > I hope this helps
>
> > Stefano
>
> I changed ExtraSelection to a Ruby Struct for the QtRuby 1.4.10
> release, but the QList marshaller for it doesn't work. So I've just
> made it an ordinary QtRuby class again in the svn, and added a
> marshaller that works. So it will be fixed in the next release of
> QtRuby.
>
> I'm hoping to add some docs about QtRuby on the KDE TechBase wiki in
> the next month or two, as details about the Qt4 version are a bit
> lacking online I'm afraid.
>
> -- Richard

THanks.

So theres no marshaller that works in 1.4.9?

with a bit of trial and error I found the method was an accesor called
extra_selections.