将String ^转换为标准C++字符串

Question

我遇到问题cannot convert parameter from 'System::String ^' to 'std::string'。如何将System :: String ^转换为Visual C++环境中的标准C++字符串？

Answer 1

从this link at Microsoft：

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)); 
} 

int main() { 
    string a = "test"; 
    String^c = gcnew String("abcd"); 
    cout << a << endl; 
    MarshalString(c, a); 
    cout << a << endl; 
}