[Qt-embedded-interest] After main thread execution, QPixmap creation in another thread crashes the application

[trinathpujari]

trinathpujari wrote:
> Tom Cooksey wrote:
>> On Friday 30 October 2009 05:41:20 ext trinathpujari wrote:
>>  
>>> Hi All,.
>>>
>>>         I am facing a serious problem in my aplication regarding the
>>> creation QPixmap.
>>>         When i am creating QPixmap in main or before main thread
>>> execution, it is working fine.
>>>         But if i create the QPixmap after a.exec or if i create the
>>> QPixmap in any of the user threads my application is crashing.
>>>         So please if anybody have any idea why it is crashing please 
>>> let
>>> me know... and it's very urgent...
>>>         Thanks in Advance...
>>>     
>>
>> QPixmaps are not thread safe. You may only use them in the main 
>> thread (the one which called QApplication::exec). If you want to 
>> render in separate threads you must use QImage instead.
>>
>>
>>   
> Hi Tom,
>
>            Thanks for your earliest reply...
>            May i know what are the potential threats, if you use 
> QPixmap in some other thread other than the main thread.
>            Actually the main problem what i posted that was solved, it 
> was problem with the stack size allocated for the board rather than 
> any Qt issue.
>            Actually now i am getting a warning regarding the usage of 
> QPixmap in othe rthreadsand it is not crashing now. But i just want to 
> make sure what are the             threats we will face in the future 
> if we use QPixmap.
>
> Regards
> Trinath
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