[Kde-bindings] Qt and Multithread

Stefan Champailler champailler at octalis.com
Tue Oct 18 09:04:06 UTC 2005


Now that I'm reading the mail in question again, I see :

"Ruby threads don't know anything about the Qt event loop. "

what does this mean exactly ?


stF


> Sorry about this question, I just saw there's on previous post on
> this ML that deals with the very same kind of issue... There :
>
> http://lists.kde.org/?l=kde-bindings&m=112798649226241&w=2
>
> stF
>
> > Dear all,
> >
> >
> > I'm still developping my robot for konqueror and I've stumbled
> > on a fundamental issue.
> >
> > I want to have a robot that can control konqueror to make GUI
> > testing (and I have a good reason to do it like that, HttpUnit
> > won't do it).
> >
> > The thing I want to achieve is to have several little functions
> > that allow me to write scripts like this :
> >
> > # this is ruby code...
> > openURL(google.org")
> > fillForm("search","what I serach for")
> > submitForm("search")
> > assert( link_present("www.mysite.com"))
> >
> > To achieve this, ruby must have the control flow. However, if I
> > use Korundum and a KApplication, the control flow is passed to
> > Qt. This leads to code like this, with an event handler :
> >
> > case scenarioStep
> >     when 1
> >         openURL(google.org")
> >     when 2
> >         fillForm("search","what I serach for")
> >     ...
> > end
> > scenarioStep++
> >
> > this works but it's not nice : having to write down all these
> > "when" is not nice.
> >
> > What I was thinking on is to have two threads. One threads
> > running the QT stuff (one window with a KHTML part) and another
> > running my script. This way the application loop control flow is
> > handled separately of the scenario control flow.
> >
> > The problem is that first, if I create a thread beside the
> > KApplication.exec one, it is run only if events are thrown at
> > the KApplication.exec.
> >
> > Second, if I write :
> >
> > a = KDE::Application.new()
> >
> > Thread.new {
> >     a.exec
> > }
> >
> > it crashes miserably.
> >
> > Any suggestion ?
> >
> > Thank you !
> >
> > Stefan
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