如何传递C ++ short *到C ++ / CLI中的托管C＃程序集 [英] How to pass a C++ short* to managed C# assembly in C++/CLI

问题描述

我无法将参数从C ++ / CLI代码传递到.NET C＃函数。

I'm having trouble passing an argument from C++/CLI code into a .NET C# function.

在C ++中，我有类似以下的东西：

In C++ I have something resembling the following:

void SomeFunction(short *id)
{
   CSharpClass::StaticClassInstance->SetValue(id);
}

在C＃方面，函数声明为ref参数： / p>

On the C# side, the function is declared with a ref argument as:

public void SetValue(ref short id)
{
  id = this.internalIdField;
}

调用SetValue（id）时遇到的编译器错误是can not将参数1从short *转换为short％。

The compiler error I'm getting when calling SetValue(id) is "cannot convert parameter 1 from 'short *' to 'short %'".

我发现跟踪引用（％）等效于C＃ref，但我不知道如何使用short *参数我试图

I found out that a tracking reference (%) is equivalent to C# ref but I don't know how to use it with the short* parameter I'm trying to pass.

提前感谢。

推荐答案

逻辑C ++ / CLI的签名 CSharpClass :: SetValue 是

The logical C++/CLI signature of CSharpClass::SetValue is

void SetValue(short% id);

如果你知道C ++（而不是C ++ / CLI），这里的答案是完全相同的这将是如果你有C + +签名

If you know C++ (as opposed to C++/CLI), the answer here is the exact same as it would be if you had the C++ signature

void SetValue(short& id);

即，只需取消引用指针：

I.e., simply dereference the pointer:

void SomeFunction(short *id)
{
    CSharpClass::StaticClassInstance->SetValue(*id);
}

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