C# 调用C++ dll，结构体含有指针

[q815497048]

C：

struct MyStruct
{
	MyStruct * next;
	int i;
};

extern "C"  char test(MyStruct ms)
{
	return  's';
}


extern "C"  int t()
{
	return 1;
}

C#：

  [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
        public struct MyStruct
        {
            public IntPtr next;
            public int i;
        };

        [DllImport(@"ConsoleApplication2.dll", CharSet = CharSet.Unicode)]
        public static extern char test(MyStruct ms);

        [DllImport(@"ConsoleApplication2.dll", CharSet = CharSet.Unicode)]
        public static extern int t();

        static void Main(string[] args)
        {
 
     
            int i = t();


            MyStruct m = new MyStruct();
            IntPtr pv = Marshal.AllocHGlobal(10);
            Marshal.WriteInt32(pv, 10);
            test(m);


        }

int i = t();可以成功。
下面就错了
如何调用test(m);
对 PInvoke 函数“TestApi!TestApi.Program::test”的调用导致堆栈不对称。原因可能是托管的 PInvoke 签名与非托管的目标签名不匹配。请检查 PInvoke 签名的调用约定和参数与非托管的目标签名是否匹配。

[q815497048]

无视 IntPtr pv = Marshal.AllocHGlobal(10); Marshal.WriteInt32(pv, 10); 这两句，没删掉