PInvoke a C++ unsigned char [][] to C#?
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Thread: PInvoke a C++ unsigned char [][] to C#?

  1. #1
    Join Date
    Aug 2011
    Posts
    3

    Question PInvoke a C++ unsigned char [][] to C#?

    The C++ structure like that:

    typedef struct d_setting
    {
    unsigned short setting1;
    unsigned char name[100][200];
    }D_SETTING;

    typedef struct d_config
    {
    unsigned short data;
    D_SETTING setting;
    }D_CONFIG;

    And i tried to call the C++ function by creating the corresponding structure in C# like:

    [StructLayout(LayoutKind.Sequential)]
    public struct D_SETTING
    {
    public ushort setting1;
    public byte[][] name;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct D_CONFIG
    {
    public ushort data;
    public D_SETTING setting;
    }

    But the name is not correct, the program crash..
    How could i create the structure for unsigned char[][] in C++??
    Thanks.

  2. #2
    Join Date
    Apr 2014
    Location
    in northeast ohio
    Posts
    84

    Re: PInvoke a C++ unsigned char [][] to C#?

    well i normally stay away from pinvoke questions
    as i in general i don't really like to use it.
    and though its been a very long time since i played around with c++
    don't you have define at least one dimension not 100% on that
    are you sure that code actually compiles in c c++.
    cause wouldn't you be calling a undeclared 2d array of uninitialized references

    anyways
    you might be able to find a example here that already does it.
    or something close enough you can use to do it.
    http://www.pinvoke.net/search.aspx?search=array&namespace=[All]
    this is a pretty tough question. here is a similar one
    http://social.msdn.microsoft.com/For...-jagged-arrays
    and if you read to the bottom of that link, you should also note.
    Please note the "char" type in C takes 1 byte, "char" in C# takes two bytes, therefore you need to use byte in C#
    Last edited by willmotil; July 8th, 2014 at 10:48 PM.

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