Re: [boost] inter-thread signals

From: Vadim Lebedev (vadim_at_[hidden])
Date: 2007-05-01 17:00:50

Thomas Sondergaard wrote:

>Vadim Lebedev wrote:
>  
>
>>Raymond Haeb wrote:
>>
>>    
>>
>>>Vadim Lebedev schrieb:
>>> 
>>>
>>>      
>>>
>>>>I'm working on a project using QT and boost and we have a requirements
>>>>that certains signals should be handled inside main QT thread but raised
>>>>in another thread.
>>>>   
>>>>
>>>>        
>>>>
>>>Why don't you use QThread? It hast this functionality
>>>(since QT 4.0 (iirc)).
>>>
>>>
>>> 
>>>
>>>      
>>>
>>Raymond,
>>
>>The components declaring sugnals, have a requirement not to use QT...  
>>They should be portable to the
>>plateforms where QT is not available.
>>
>>    
>>
>
>The main thread in all the gui toolkits I'm familiar with is running an
>event-loop. The standard way of having work done in this thread is to
>send it events. As I see it your signal-framework needs to wrap a
>toolkit specific way of transporting your signal as an event. In Qt-4
>that is directly supported by Qt's signal-slot framework. In Qt-3 you
>have to use QApplication::postEvent() (only thread-safe method, as far
>as I recall) and send a QCustomEvent-specialization to some dispatcher
>object.
>
>  
>
Thomas,

Im my example the 'mtfunction' template is parametrized by a class which 
only simulates sending of the message,
in real life however, it could be easily replaced by a version which 
does QApplication::postEvent

Thanks
Vadim

>Regards,
>
>Thomas
>
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