标准字符串std::string和System::String， CString之间的转换

最新推荐文章于 2022-06-27 14:32:43 发布

windren06

最新推荐文章于 2022-06-27 14:32:43 发布

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分类专栏： C++ 文章标签： string system os

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本文介绍如何在C++与.NET之间转换字符串类型。包括std::string与System.String之间的相互转换，以及std::wstring与System.String之间的转换方法。此外还展示了如何将System.String转换为C风格的字符串和字符数组。

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1. std::string 转成System.String

#include <string>
#include <iostream>
using namespace System;
using namespace std;

int main() {
   string str = "test";
   cout << str << endl;
   String^ str2 = gcnew String(str.c_str());
   Console::WriteLine(str2);

   // alternatively
   String^ str3 = gcnew String(str.c_str());
   Console::WriteLine(str3);

#include <string>
#include <iostream>
using namespace std;
using namespace System;
using namespace System::Runtime::InteropServices;
//System::String转std::string
void MarshalString ( String* s, string& os ) {
   
   const char* chars = (const char*)(Marshal::StringToHGlobalAnsi(s)).ToPointer();
   os = chars;
   Marshal::FreeHGlobal(IntPtr((void*)chars));
}

//System::String转std::wstring
void MarshalString ( String* s, wstring& os ) {
   const wchar_t* chars = (const wchar_t*)(Marshal::StringToHGlobalUni(s)).ToPointer();
   os = chars;
   Marshal::FreeHGlobal(IntPtr((void*)chars));
}

//System::String转std::string
string str = "";
String* s = "abcdef";
const char* chars = (const char*)(Marshal::StringToHGlobalAnsi(s)).ToPointer();
str = s;

//std::wstring转System::String
string str = "abcdef";
String* s;
s = new String(str.c_str());

//System::String转char*;
String* s = "abcdef";
char*  ch=  (char*)(void*)Marshal::StringToHGlobalAnsi(s);

//System::String转char[];
char ch2[100];
strcpy(ch2,ch);