I am developing for Windows, I have not found adequate information on how to correctly declare and later on set a unicode string. So far,
wchar_t myString[1024] = L"My Test Unicode String!";
What I assume the above does is [1024] is the allocated string length of how many characters I need to have max in that string. L"" makes sure the string in quotes is unicode (An alt I found is _T()). Now later on in my program when I am trying to set that string to another value by,
myString = L"Another text";
I get compiler errors, what am I doing wrong?
Also if anyone has an easy and in-depth unicode app resource I'd like to have some links, used to have bookmarked a website which was dedicated to that but seems that now is gone.
EDIT
I provide the entire code, I intend to use this as a DLL function but nothing so far is returned.
#include "dll.h"
#include <windows.h>
#include <string>
#include <cwchar>
export LPCSTR ex_test()
{
wchar_t myUString[1024];
std::wcsncpy(myUString, L"Another text", 1024);
int myUStringLength = lstrlenW(myUString);
MessageBoxW(NULL, (LPCWSTR)myUString, L"Test", MB_OK);
int bufferLength = WideCharToMultiByte(CP_UTF8, 0, myUString, myUStringLength, NULL, 0, NULL, NULL);
if (bufferLength <= 0) { return NULL; } //ERROR in WideCharToMultiByte
return NULL;
char *buffer = new char[bufferLength+1];
bufferLength = WideCharToMultiByte(CP_UTF8, 0, myUString, myUStringLength, buffer, bufferLength, NULL, NULL);
if (bufferLength <= 0) { delete[] buffer; return NULL; } //ERROR in WideCharToMultiByte
buffer[bufferLength] = 0;
return buffer;
}
The easiest approach is to declare the string differently in the first place:
std::wstring myString;
myString = L"Another text";
If you insist in using arrays of wchar_t
directly, you'd use wcscpy()
or better wcsncpy()
from <cwchar>
:
wchar_t myString[1024];
std::wcsncpy(myString, L"Another text", 1024);