结构体中的Marshal safearray [英] Marshal safearray of struct inside struct

问题描述

我在C ++中有以下代码，我需要能够从C＃调用：

I have the following code in C++ which I need to be able to call from C#:

struct Inner
{
 double data1;
 double data2;
};

struct Outer
{
 double data3;
 SAFEARRAY innerData;
};

int WINAPI ProcessData (Outer& outer )
{
  ...
}

我试过下面但是没有工作我做错了什么？

I tried the following but it did not work What am I doing wrong?

[StructLayoutAttribute(LayoutKind.Sequential)]
public struct Inner 
{
 public double data1;
 public double data2;
}

[StructLayoutAttribute(LayoutKind.Sequential)]
public struct Outer 
{
 public double data3;
[MarshalAsAttribute(UnmanagedType.Safearray,ArraySubType = UnmanagedType.Struct)]
 public Inner[] innerData;
}

推荐答案

/ p>

Did you try this?

  [StructLayoutAttribute (LayoutKind.Sequential)]
  public struct Outer
  {
     public double data3;
     [MarshalAsAttribute (UnmanagedType.SafeArray, SafeArrayUserDefinedSubType=typeof(Inner))]
     public Inner [] innerData;
  }

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