[Qt-interest] running phonon video from separate process?

[Samuel Gaist]

On 22 déc. 08, at 15:53, Bart van Deenen wrote:

>
> On Mon, 2008-12-22 at 14:59 +0100, Oliver.Knoll at comit.ch wrote:
>> Bart van Deenen wrote on Monday, December 22, 2008 2:38 PM:
>>
>>> ...
>>> The hard thing to me seems to be redirecting the rendering of the
>>> child process. I'm familiar with native window id's on Linux and
>>> Windows, and have used those from AWT Java displays. How should I
>>> proceed with this in Qt?
>>
>> Off course, if you don't mind using platform-specific code then you  
>> could also re-parent widgets:
>>
>> You get the native window IDs using the Qt API (http://doc.trolltech.com/4.4/qwidget.html#winId 
>> ). On Windows you would then use the win32 call SetParent(). See  
>> how to embed the render window of Google Earth into a Qt app:
>>
>>  http://groups.google.de/group/kml-support-com-api/browse_thread/thread/743601cce38d4a86/afbdc7a8a83441a3
>>
>> (note that there's a whole bunch of things not properly working  
>> with the above code and Google Earth 4.3, but that's related to how  
>> GE resizes the render window and has nothing to do with this topic  
>> - but it shows the general approach how you could embed another  
>> window into a Qt app).
>>
>> On X11 the class http://doc.trolltech.com/4.4/qx11embedwidget.html  
>> could be useful (for X11 applications which support the "X11  
>> embedding" protocol).
>>
>> Cheers, Oliver
>> --
> Wow, what an excellent helpful reply! Thanks.
>
> I think that since the child application that I'm going to write is  
> just
> a Qt application with a Phonon VideoWindow that the QWidget::winId()
> function combined with setParent() will make a complete crossplatform
> solution. Looks very good.
>
> On the subject of inter process communication: is there anything  
> awesome
> crossplatform in the Qt libraries? I've seen QtDbus, but that works  
> only
> on Unix/Linux, and for now we still have many Windows customers.
> Ofcourse I can always cook up something or use one of the many rpc
> protocols?
>
> Thanks
>
> Bart van Deenen
> Infologic.nl
>
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For the RPC part, you might be interested in:
http://doc.trolltech.com/4.4/qlocalserver.html
http://doc.trolltech.com/4.4/qlocalsocket.html

Simple to use and cross platform

Cheers, Samuel