How to Implement Callback function using LabVIEW

[Vivek Bhojan]

The IEC61850_Associate_Req function has a callback fuction Confirmation as one of its parameters. How do I implement the callback using the Call Library Function node

int_stdcall Confirmation(LPCTSTR Msg)

{

printf("\n***Confirmation (callback)***\n%s\n", Msg);

return 0;

}

result= IEC61850_Associate_Req(request.c_str(), Confirmation, response, 1024);

if(result)

{

return result;

}

In the above program, request and response is an xml based strings.

I am stuck in this logic for past one week.

[vugie]

The IEC61850_Associate_Req function has a callback fuction Confirmation as one of its parameters. How do I implement the callback using the Call Library Function node

Here is an example of how to create and use callbacks.

[Vivek Bhojan]

Here is an example of how to create and use callbacks.

Hi vugie,

Thanks for your help..

As I am new to LabVIEW and C, I am not able to proceed with the details given.

Can you please provide a simple logic based on the inputs given by me to continue further.

Thanks,

[Rolf Kalbermatter]

Hi vugie,

Thanks for your help..

As I am new to LabVIEW and C, I am not able to proceed with the details given.

Can you please provide a simple logic based on the inputs given by me to continue further.

Thanks,

You will need to learn some C AND LabVIEW for sure. The example in the link from vugie provides all that is necessary with only one difference and that is the prototype of your function itself. If your knowledge is so limited that this is to much to do yourself you will run into many more trouble along the way and should consider to either try to find a non callback solution or hire someone who does this part for you.