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我有编组问题。我试图将 C++ 结构翻译成 C#，但它不起作用。

C# 代码

namespace DLL_IMPORT_TEST
{
    public struct CUDA_POINT
    {
        public int x;
        public int y;

        public CUDA_POINT(int X, int Y)
        {
            x = X;
            y = Y;
        }
    }

    public struct DataStruct
    {
        public Int64 a;
        public long b;
        public long c;
        public CUDA_POINT d;

        public DataStruct(int p1, int p2, long p3, CUDA_POINT p4)
        {
            a = p1;
            b = p2;
            c = p3;
            d = new CUDA_POINT(p4.x, p4.y);
        }
    }   


    [DllImport("DLL_C++.dll", CallingConvention = CallingConvention.StdCall)]
    unsafe public static extern void PrintDataStruct(ref DataStruct d1);

    private void OnPrintBtnClicked(object sender, EventArgs e)
    {
        DataStruct d1 = new DataStruct(1000, 1000, -10, new CUDA_POINT(0,0));
        string s1 = string.Format("{0} {1} {2} {3}, {4}\n", d1.a, d1.b, d1.c, d1.d.x, d1.d.y);
        PrintDataStruct(ref d1);
        PrintBox.Text += s1;
    }        
}

C++ 代码

extern "C" __declspec(dllexport) void PrintDataStruct(DataStruct d1){
    ofstream outFile("Output.txt");
    outFile << "a == " << d1.a << endl;
    outFile << "b == " << d1.b << endl;
    outFile << "c == " << d1.c << endl;
    outFile << "d == " << d1.d.x << ", " << d1.d.y << endl;
    outFile.close();
}

C# 的输出是正确的，但 C++ 的输出是不正确的。

C# 输出

1000
1000
-10
0,0

C++ 输出

1000
1000
-10
-10, -1
4

0 回答 0