Re: DLL: (const char *paramNames[],size_t numParams)

[Andre Pany via Digitalmars-d-learn]

On Monday, 9 July 2018 at 10:56:18 UTC, Andre Pany wrote:
On Monday, 9 July 2018 at 10:38:54 UTC, Basile B. wrote:
On Monday, 9 July 2018 at 10:33:03 UTC, Andre Pany wrote:
Hi, no it's not correct i think, right translation would be
    extern(C) void GetParamNames(const char** paramNames, 
size_t numParams);

If you use the D array syntax you'll get into troubles because 
of ABI i think.

Baz.

Thanks, it seems I also have to allocate the pointer before 
with the numbers of numParams.
In python the code looks s.th. like this

self.output_names = (c_char_p * self.number_outputs)()

Do you know that is the equivalent in D?

Kind regards
André

If found this working, is this OK, or do I have a memory bug here?

        import core.stdc.stdlib: malloc, free;
        string[] result;

        size_t numOutputs = 4;
        const(char**) arr = cast (const(char**)) 
malloc(numOutputs * (char*).sizeof);

        auto status = GetParamNames(arr, numOutputs);

        for(int i = 0; i < numOutputs; i++)
        {
            const(char*) c = arr[i];
            result ~= c.fromStringz.dup;
        }

        free(cast(void*) arr);

Kind regards
André