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

1. std::string 转成System.String

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#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);

string CBZApiTest::StrToStr(String^ strClr)

{

const char* chars = (const char*)(Marshal::StringToHGlobalAnsi(strClr)).ToPointer();

string str = chars;

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

return str;

}

String^ CBZApiTest::clrStrToStr(string str)

{

return gcnew String(str.c_str());

}

2.

#include <string>
#include <iostream>
using namespace std;
using namespace System;
using namespace System::Runtime::InteropServices;
<span style="color: rgb(255, 0, 0);">//System::String转std::string</span>
void MarshalString ( String* s, string& os ) {

const char* chars = (const char*)(Marshal::StringToHGlobalAnsi(s)).ToPointer();
os = chars;
Marshal::FreeHGlobal(IntPtr((void*)chars));
}

<span style="color: rgb(255, 0, 0);">//System::String转std::wstring</span>
void MarshalString ( String* s, wstring& os ) {
const wchar_t* chars = (const wchar_t*)(Marshal::StringToHGlobalUni(s)).ToPointer();
os = chars;
Marshal::FreeHGlobal(IntPtr((void*)chars));
}

<span style="color: rgb(255, 0, 0);">//System::String转std::string
</span><span style="font-size: 12px;">string str = "";
String* s = "abcdef</span><span style="font-size: 12px;">";
</span>const char* chars = (const char*)(Marshal::StringToHGlobalAnsi(s)).ToPointer();
str = s;

<span style="color: rgb(255, 0, 0);">//std::wstring</span><span style="color: rgb(255, 0, 0);">转</span><span style="color: rgb(255, 0, 0);">System::String</span><span style="font-size: 12px;">
string str = "abcdef";
String* s;
s = new String(str.c_str());

</span><span style="color: rgb(255, 0, 0);">//System::String转char*;
</span><span style="font-size: 12px;">String* s = "abcdef</span><span style="font-size: 12px;">";
char*  ch=  (char*)(void*)Marshal::StringToHGlobalAnsi(s);

</span><span style="color: rgb(255, 0, 0);">//System::String转char[];
<span style="color: rgb(0, 0, 0);">char ch2[100];
strcpy(ch2,ch);</span></span>