core.exception.UnicodeException at src\rt\util\utf.d(400): illegal UTF-16 value

[Ali Çehreli via Digitalmars-d-learn]

On 09/15/2014 04:36 PM, notna wrote:

 >          WCHAR lpwszUsername[254];
 >          debug writefln("lpwszUsername.sizeof is %s, WCHAR.sizeof is
 > %s", lpwszUsername.sizeof, WCHAR.sizeof);
 >          // DWORD dUsername2 = lpwszUsername.sizeof / WCHAR.sizeof;
 >          DWORD dUsername2 = 254;
 >          GetUserNameW(lpwszUsername.ptr, &dUsername2);

You must make use of the returned value to slice your wstring. Something 
like this (not compiled):

     auto actualLength = GetUserNameW(lpwszUsername.ptr, &dUsername2);
     auto userName = lpwszUsername[0..actualLength];

Otherwise, D knows that lpwszUsername is a 254-char string and will try 
to print all of it.

Ali