Hi hipek!
Yes I mean String^. I'm using some C API in my project and some API
functions operate on char*. I have to convert char* to String^ and sometimes
in other side in order tu put it into some visual components as properties.
Before I've never used Visual Studio C++ and cli/C++ for my projects and I
need to learn more about it.
For converting String^ to char or wchar_t I suggest the following, which
handles everything for you (also if someone throws an exception):
#include <windows.h>
#include <tchar.h>
#include <string>
using namespace System;
struct StringConvA
{
char *szAnsi;
StringConvA(System::String ^s)
:
szAnsi(static_cast<char*>(System::Runtime::InteropServices::Marshal::StringToHGlobalAnsi(s).ToPointer()))
{}
~StringConvA()
{
System::Runtime::InteropServices::Marshal::FreeHGlobal(IntPtr(szAnsi));
}
operator LPCSTR() const
{
return szAnsi;
}
};
struct StringConvW
{
wchar_t *szUnicode;
StringConvW(System::String^ s)
:
szUnicode(static_cast<wchar_t*>(System::Runtime::InteropServices::Marshal::StringToHGlobalUni(s).ToPointer()))
{}
~StringConvW()
{
System::Runtime::InteropServices::Marshal::FreeHGlobal(IntPtr(szUnicode));
}
operator LPCWSTR() const
{
return szUnicode;
}
};
#ifdef _UNICODE
#define StringConvT StringConvW
#else
#define StringConvT StringConvA
#endif
int _tmain()
{
String ^s = "abc";
std::string ansi = StringConvA(s);
std::wstring unicode = StringConvW(s);
_tprintf(_T("%s"), (LPCTSTR) StringConvT(s));
}
--
Greetings
Jochen
My blog about Win32 and .NET
http://blog.kalmbachnet.de/
