如何在C ++ / CX中将String ^转换为std :: string [英] How to convert String^ to std::string in C++/CX

问题描述

大家好，我对C ++ / CX没有多少经验。我有需要将C＃字符串数据转换为C ++ std :: string数据。

我试过以下代码，它给出了构建错误：未解析的外部符号。

C ++代码：

 String ^ req; 
 std :: wstring ws（req-> Data（））; 
 std :: string request（（const char *）& ws [0]，sizeof（wchar_t）/ sizeof（char）* ws.size（））; 
 _networkApi->发布（请求）; 
 

 

PostRequest方法的定义如下：

 void Post（std :: string& s）; 

当我删除_networkApi-> Post（请求）时。然后项目成功构建。请建议我一个解决方案。

提前致谢... :)

---

Pallam Madhukar Windows Phone开发人员

解决方案

< blockquote>

我想这篇文章的String转换部分：
http ：//msdn.microsoft.com/en-us/library/windows/apps/hh699879.aspx 包含您需要的所有信息。

Hi all, I don't have much experience with C++/CX. I have requirement where I need to convert the C# string data to C++ std::string data.

I have tried following code which is giving build error: unresolved external symbol.

C++ Code:

String^ req;
std::wstring ws(req->Data());
	std::string request((const char*)&ws[0], sizeof(wchar_t) / sizeof(char)*ws.size());
	_networkApi->Post(request);

 

The definition of the PostRequest method as below:

void	Post (std::string &s);

When I removed _networkApi->Post(request). then the project build successfully. Please suggest me a solution.

Thanks in advance... :)

---

Pallam Madhukar Windows Phone Developer

解决方案

I guess the section String conversions of this article: http://msdn.microsoft.com/en-us/library/windows/apps/hh699879.aspx contains all the information you need.

这篇关于如何在C ++ / CX中将String ^转换为std :: string的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！