Bug Fix: WM_GETTEXT should return NULL string if LB_GETCURSEL is LB_ERR

[Francois Gouget]

On Mon, 15 Jul 2002, Shachar Shemesh wrote:

> +	   LPWSTR lpText = (LPWSTR)lParam;
> +	   lpText[0] = '\0';
>
>
> Shouldn't it be
>
> +	   LPWSTR lpText = (LPWSTR)lParam;
> +	   lpText[0] = L'\0';

It does not matter. Both are equivalent to:
> +        lpText[0] = 0;

'\0' is a single byte 0 value (IOW a char) which is expanded to 16bits,
and assigned to the WCHAR. L'\0' is a 32bit 0 Unicode character (a
wchar_t) which is scaled down to 16bits and assigned to the WCHAR. And
the last one is a 32bit integer which too is scaled down to 16bits and
assigned to the WCHAR.

The thing is Unix C compilers don't have 16bit literal Unicode
characters (except in some cases g++ 3.x) so you cannot write code that
does not imvolve a conversion of some sort.


--
Francois Gouget         fgouget at free.fr        http://fgouget.free.fr/
    I haven't lost my mind, it's backed up on tape around here somewhere...