Unicode(arabic characters) content from InternetReadFile winnet API?

Revision 2
I have tried to display URL(contain unicode characters) response in Message Box.

But garbage characters displaying, so that i tried to made different conversions, but alphabits only displaying remaining unicode characters displaying as ?(or)garbage values.

im trying this from 7 days..plz help me...im very new to coding plz write the complete code.

HINTERNET hInternet = InternetOpen( _T(""), INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0 );
	HINTERNET hConnect = InternetConnect( hInternet, L"http://xxxxxxxxxx.com", INTERNET_DEFAULT_HTTP_PORT, NULL, NULL, INTERNET_SERVICE_HTTP, 0, 1);
 DWORD options = INTERNET_FLAG_NEED_FILE|INTERNET_FLAG_HYPERLINK|INTERNET_FLAG_RESYNCHRONIZE|INTERNET_FLAG_RELOAD;
 HINTERNET hRequest  = InternetOpenUrl(hInternet,  L"http://xxxxxxxxxxx.com/c.php?varname=artxt&text=يبتىلمينبىمنيبغعاanand123",  NULL, 0, options, 0); 

TCHAR buffer[100];
DWORD bytesRead;
InternetReadFile(hRequest, buffer,100, &bytesRead);
MessageBoxW(NULL,ATL::CA2W(buffer),L"Check",MB_OK);
}
  
    InternetCloseHandle(hRequest);
    InternetCloseHandle(hConnect);