在C＃中调用非托管c ++代码与STL混合 [英] Calling unmanaged c++ code in C# Mixed with STL

问题描述

嘿，我想在C＃
中调用非托管的c ++代码。函数接口如下所示（我简化了它，以便于理解）

Hey, I want to call unmanaged c++ code in C# The function interface is like following(I simplified it to make it easy to understand)

Face genMesh(int param1, int param2);

Face是一个结构体定义为：

Face is a struct defined as:

struct Face{
    vector<float> nodes;
    vector<int>  indexs;
}

我googled并阅读MSDN文档找到方法调用简单的c / c ++ unmanged代码在C＃中，也知道如何处理结构作为返回值。我的问题是如何处理矢量。我没有找到关于向量和一些类型之间的映射的规则在C＃

I googled and read the MSDN docs found ways to call simple c/c++ unmanged code in C#, also know how to hand the struct as return value. And My question is how to handle "vector". I did not find rules about mapping between vector and some types in C#

谢谢！

推荐答案

如果可能，您希望避免在纯UNB代码中使用STL。当你与C ++ / CLI（或Managed C ++）混合使用时，你最终可能会得到以托管方式运行的STL代码和以非托管方式运行的客户端代码。发生什么情况是，当你说，在一个向量上迭代时，每一次向量方法的调用都将转换为托管代码，然后再返回。

You want, if possible, to avoid using STL in anything but pure UNmanaged code. When you mix it with C++/CLI (or Managed C++), you will likely end up with the STL code running as managed and the client code running as unmanaged. What happens is that when you, say, iterate over a vector, every call to a vector method will transition into managed code and back again.

请参阅此处提出类似问题。

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