BackgroundWorker Component

[ideru]

I found this article

https://msdn.microsoft.com/en-us/lib...undworker.aspx

and tried it in my current application.

My backgroundworker will do file saving operation, unfortunately it's crashing now .

Here is the flow of my code:

• Application Starts
• Start Thread to get data from a buffer. The thread is created by

     Thread^ thReceive = gcnew Thread(gcnew ThreadStart(&Form1::ThreadReceiveProc));

  ThreadReceiveProc(){
       buffer_data  <- save data ( global variable)
  }

• When the data size save in buffer data is satisfied , start background worker thread

        backgroundWorker1->RunWorkerAsync(buffer_data_size);

• in DoWork of background worker thead save data to file. The global variable ( buffer_data ) is accessed and save to file.

     fwrite(gbuffer_data sizeof(gbuffer_data, buffer_data_size global_file_pointer);

The worker thread is run whenever the size of the buffer data is reached.

I'm currently debugging but any thoughts on the fwrite don't work?

The code is a bit big, if needed I can try to make a small one.

Thanks for any advice

[VictorN]

I found this article

https://msdn.microsoft.com/en-us/lib...undworker.aspx

and tried it in my current application.

My backgroundworker will do file saving operation, unfortunately it's crashing now .

And how exactly is it "crashing"?

[ideru]

It me took awhile to figure it out isolating each variable but it seems that the culprit was the global file pointer I was using. It was null, so of course it crashed

[VictorN]

it seems that the culprit was the global file pointer I was using. It was null, so of course it crashed

But why don't you check whether it is NULL or not before using this pointer?

[ideru]

But why don't you check whether it is NULL or not before using this pointer?

I had 2 File Pointers, and the one that was supposed to be use was created and checked if NULL. File is create and opened successfully, but during the write operation I used the other variable, really STUPID .. Live and learn