I have coded a C program to get info from the QDFRTVFD API.
It works and successfully retrieves Fields (incl posn and atr) and
Constants from a DSPF.
It is here. http://wiki.midrange.com/index.php/CQDFRTVFD
However the way it is coded is very inefficient because I invoke the API
for every field/constant in the DSPF.
To be more efficient I would need to invoke the API only once and retain
the API returned data.
I want to keep the API invoke in the called function.
To retain data after a C program ends is , I believe the definition of
‘memory leak’, so I cant see how I can call the API within the C program
and also retain the data after the program ends.
I know how to pass data back to the caller, in fact that is how the field
information is returned. However for this I have memory allocated in the
The C program does a ‘malloc’ and here is where I am lost, as I cannot
see how to pass back the data in the ‘malloc’.
Any help. TIA.
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