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List:       kde-devel
Subject:    Re: Inter-thread signals/slots?
From:       Vladimir Prus <ghost () cs ! msu ! su>
Date:       2006-05-03 12:47:50
Message-ID: e3a8pm$g25$1 () sea ! gmane ! org
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Thiago Macieira wrote:

> Vladimir Prus wrote:
>>Hello!
>>
>>The Qt4 docs say that signal/slot invocation can now cross thread
>>boundaries. I wonder if anything like that is available for Qt3 or
>> KDE3.*?
> 
> No. You have to hand-tailor it yourself.
> 
> In Qt3, signals are delivered to the slots in the thread the signal is
> emitted. But QObjects are not supported outside the GUI thread, so your
> problem is solved: signals and slots can only be used in the GUI thread.

Can you clarify one point? Say I have second thread. Is it safe to
manipulate QListView from that other thread, after calling qApp->lock()?
For example:

   qApp->lock();
   new QListViewItem(var, .....);
   qApp->unlock();

?

- Volodya


 
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