双打元帅数组从C到C＃ [英] Marshal array of doubles from c to c#

问题描述

有人可以告诉我什么我应该写名帅之间的C和C＃？

Can someone please tell me exactly what I should write to marshal an array of double pointers between C and C#?

struct foo { double *abc[20]; };

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
public class foo {  // ??? abc;   }

我有许多斜resonses 2 previous查询，我对这个同一主题在这里找到另一十几个问题，但我不能在其中任何一个简单的回答这个问题找到。

I have had many oblique resonses to 2 previous queries, and I have read another dozen or so questions here on this same topic, but I can't find in any of them a simple answer to this question.

推荐答案

好吧，这里是简单，直接回答这个问题：

Ok, here is the simple, straightforward answer to this question:

[MarshalAs(UnmanagedType.ByValArray, SizeConst = 20)]
public IntPtr[] abc;

诀窍是，直觉相反，您必须尽管这是双数组的指针，不是int指针使用一个IntPtr。

The trick is that, counterintuitively, you must use an IntPtr despite the fact this is an array of double pointers, not int pointers.

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