SWIG Passing Ruby structure arrays into C DLL

Discussion in 'Ruby' started by John Reynolds, Mar 20, 2008.

  1. I have a structure defined in my DLL
    Code (Text):

    typedef struct _ABC{
    int a, b,c;
    }ABC;
     
    And a function

    Code (Text):

    void func(int count, ABC * abc)
    {
    ABC *tempabc = abc;
    for (int i=0; i< count; i++)
    {
    cout << tempabc->a << tempabc->b << tempabc->c << endl;
    tempabc++;
    }
    }
     
    The above is compiled into a DLL, say ABC_DLL that can be used in Ruby
    using the SWIG interface.
    In my ruby script, I create an array of ABC.

    Code (Text):

    arr=Array.new
    temp1 = ABC_DLL::ABC.new
    temp1.a=1111
    temp1.b=1111
    temp1.c=1111
    arr = arr << temp1
    temp2 = ABC_DLL::ABC.new
    temp2.a=2222
    temp2.b=2222
    temp2.c=2222
    arr = arr << temp2
    temp3 = ABC_DLL::ABC.new
    temp3.a=3333
    temp3.b=3333
    temp3.c=3333
    arr = arr << temp3
     
    Question is how do I pass this array (arr) into the DLL function??

    I tried

    ABC_DLL::func(3,arr[0])

    but my func in DLL prints out the following
    1111 1111 1111
    2434 342332 3423442 (some junk numbers)
    2222 2222 2222

    I would have expected something like

    1111 1111 1111
    2222 2222 2222
    3333 3333 3333
     
    John Reynolds, Mar 20, 2008
    #1
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