C2005中System::String转换为std::string

http://msdn.microsoft.com/zh-cn/library/1b4az623%28VS.80%29.aspx

 

可以在不使用 Vcclr.h 中的 PtrToStringChars 的情况下将 String 转换为 std::string 或 std::wstring 。

示例

复制

// convert_system_string.cpp

// compile with: /clr

#include <string>

#include <iostream>

using namespace std;

using namespace System;



void MarshalString ( String ^ s, string& os ) {

   using namespace Runtime::InteropServices;

   const char* chars = 

      (const char*)(Marshal::StringToHGlobalAnsi(s)).ToPointer();

   os = chars;

   Marshal::FreeHGlobal(IntPtr((void*)chars));

}



void MarshalString ( String ^ s, wstring& os ) {

   using namespace Runtime::InteropServices;

   const wchar_t* chars = 

      (const wchar_t*)(Marshal::StringToHGlobalUni(s)).ToPointer();

   os = chars;

   Marshal::FreeHGlobal(IntPtr((void*)chars));

}



int main() {

   string a = "test";

   wstring b = L"test2";

   String ^ c = gcnew String("abcd");



   cout << a << endl;

   MarshalString(c, a);

   c = "efgh";

   MarshalString(c, b);

   cout << a << endl;

   wcout << b << endl;

}