C#與C++之間dll的二維（多維）數組傳遞

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思維：用結構體作爲中間變量，也就是傳遞結構體，然後在C#中把結構體中的數據放進二維數組中。

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C#接收代碼的形式：（這裏只是思路展示，非可運行代碼）

  [DllImport("myDLL.dll", CallingConvention = CallingConvention.Cdecl)]
        public static extern void myFunc([In][MarshalAs(UnmanagedType.LPArray, SizeConst = 0)] InStruct[] istruct, [Out] [MarshalAs(UnmanagedType.LPArray, SizeConst = 0)] OutStruct[] outstruct);

        public struct InStruct
        {
            public int x;
            public int y;
            public int z;
        }

        public struct OutStruct
        {
            public int x;
            public int y;
            public int z;
        }

        //把C++通過結構體接收的數據，裝在二維數組中
        int[,] data = new int[3,100];
        InStruct[] instruct = new InStruct[100];
        OutStruct[] outstruct = new OutStruct[100];

        //在二維數組data中接收outstruct中的數據

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C++中封裝的形式：

struct InStruct
{
	int x;
	int y;
	int z;
};
struct OutStruct
{
	int x;
	int y;
	int z;
};
extern "C" __declspec(dllexport) void myFunc(InStruct *instruct, OutStruct *outstruct)
{
	InStruct instruct[100];
	OutStruct outstruct[100];
	
	//使用結構體對象傳進來或者傳出去數據，可以把二維數組的數據先賦給結構體
}

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