Re: cvLoadImage throws exception when used in a .NET Thread

sorry guys to post my previous message, after posting it, the magician
solved our problem

it is indeed by using the static member in a threaded application that
causes the problem

hope someone in the future can be helped by this double post ...

bye
wes

--- In OpenCV@xxxxxxxxxxxxxxx, "wesley" <wesley_lorrez@...> wrote:
>
> hi
> 
> we are facing a weird problem
> 
> we have build an c++ application that works with .NET Thread;
> using Visual Studio C++ .NET and using the last OpenCV release
> 
> the application starts a new thread;
> 
> in this thread we load and save an image;
> 
> now the problem:
> from the moment the function of the main application is finished --
> before the thread has finished -- we get an exception on cvLoadImage
> or/and on cvSaveImage
> 
> if we keep the function alive (with a sleep) there is no problem, the
> thread executes cvLoadImage and cvSaveImage and finish without problem
> 
> the exception is:
>   null reference, object not set to an instance
> and the exception occurs in the file: loadsave.cpp on the line 317:
> 
> GrFmtReader* CvImageFilters::FindReader( const char* filename ) const
> {
>     return m_factories->FindReader( filename ); //!!!!!
> }
> 
> In debug we can see that m_factories has a valid pointer and filename
> also contains the filename, no null reference ...
> 
> Can it be because m_factories is static and we call it in another
Thread??
> 
> is there anyone who can help us out??  we are really stuck here and
> have no idea how to solve this.
> 
> thanks
> greetingz
> 
> wes
>






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