COM Interop and Pointer to Array

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  • Mike
    #1

    COM Interop and Pointer to Array

    A function in a COM DLL I use takes a pointer to the first element in
    an array of short integers.

    Foo(short* array)

    COM interop provides this function to me in the .NET world by making
    the parameter “ref short”.

    Foo(ref short array)

    It seems like no matter what I try, the COM DLL only sees the first
    element in the array. Is there a way to get it to see the entire array
    of values? Maybe some sort of marshalling I haven’t tried yet?

    Thanks,
    Mike
    Tags: None
    • PvdG42
      #2
      Re: COM Interop and Pointer to Array

      "Mike" <MLM450@hotmail .comwrote in message
      news:f71ac631-5d1c-449e-8db5-7154e5c5c4e9@u5 7g2000hsf.googl egroups.com...
      A function in a COM DLL I use takes a pointer to the first element in
      an array of short integers.

      Foo(short* array)

      COM interop provides this function to me in the .NET world by making
      the parameter “ref short”.

      Foo(ref short array)

      It seems like no matter what I try, the COM DLL only sees the first
      element in the array. Is there a way to get it to see the entire array
      of values? Maybe some sort of marshalling I haven’t tried yet?

      Thanks,
      Mike


      Assuming you are using C#, what happens happens if you change the parameter
      type to Foo(ref short[] array)?

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