C#调用ATL失败

[xhubobo]

1、ATL中定义：

interface INvrProxy : IDispatch{
	[id(1), helpstring("test")] HRESULT TestStruct([in] VARIANT* variantIn, [out] int* result);
};

2、实现：

struct Time
{
	DWORD hour;
	DWORD min;
	DWORD sec;
};
STDMETHODIMP CNvrProxy::TestStruct2(VARIANT* variantIn, int* result)
{
	try
	{
		HRESULT hr;
		SAFEARRAY* psaStru = variantIn->parray;
		Time *pTime = NULL;
		Time time;

		hr = SafeArrayAccessData(psaStru, reinterpret_cast<PVOID*>(&pTime));
		time = *pTime;

		hr = SafeArrayUnaccessData(psaStru);
		SafeArrayDestroy(psaStru);

		*result = (int)time.hour;
	}
	catch (...)
	{
		*result = -1;
	}

	return S_OK;
}

3、C#调用

        [StructLayoutAttribute(LayoutKind.Sequential, Pack = 1)]
        struct Time
        {
            public uint hour;
            public uint min;
            public uint sec;
        }
                                    Time time;
                                    time.hour = 9;
                                    time.min = 31;
                                    time.sec = 12;

                                    int size = Marshal.SizeOf(time);
                                    IntPtr pInput = Marshal.AllocHGlobal(size);
                                    Marshal.StructureToPtr(time, pInput, false);

                                    int ret = 0;
                                    object obj = pInput;

                                    try
                                    {
                                        mNvrProxy.TestStruct(ref obj, out ret);
                                    }
                                    catch (System.Exception ex)
                                    {
                                        MessageBox.Show(ex.Message);	
                                    }

运行会出现“尝试读取或写入受保护的内存。这通常指示其他内存已损坏。”的错误。
请教下C#该怎么传入结构体？谢谢

[xhubobo]

现在用这种方式可以传参，但是ATL解析不对

                                    int size = Marshal.SizeOf(time);

                                    IntPtr pInput = Marshal.AllocHGlobal(size);
                                    Marshal.StructureToPtr(time, pInput, false);

                                    IntPtr pInput2 = Marshal.AllocHGlobal(size);
                                    Marshal.StructureToPtr(time, pInput2, false);

                                    IntPtr[] pInputs = new IntPtr[2] { pInput, pInput2 };

                                    int ret = 0;
                                    object obj = pInputs;

                                    try
                                    {
                                        mNvrProxy.TestStruct3(ref obj, out ret);
                                    }
                                    catch (System.Exception ex)
                                    {
                                        MessageBox.Show(ex.Message);	
                                    }

[xhubobo]

C#调用ATL Dll传递结构体参数需要注意什么？

[xhubobo]

别沉别沉