[RESEND] regedit: Convert from WCHAR size to maximum required
wjsqudtlr at gmail.com
Wed Apr 4 16:17:42 CDT 2007
Bill Medland wrote:
> On Thu, 2007-05-04 at 02:18 +0900, Byeong-Sik Jeon wrote:
> > Hi,
> > Currently regedit is not defined "UNICODE".
> > The point are "max_val_name_len", "valName", "valNameLen".
> > Not max_val_size, valSize.
> > RegQueryInfoKey set the "max_val_name_len" to the size of the longest
> > value name, in characters. This value is not required byte size.
> but the call to HeapAlloc multiplies by sizeof TCHAR already.
> > N character string:
> > ==> w/ UNICODE, N WHAR string.
> > ==> w/o UNICODE, N ~ 2N unsigned char string.
> > Please, test the CJK locale. and See the "IDS_NEWKEY, IDS_NEWVALUE" in
> > Ja.rc or Ko.rc .
> > If we create the registry "value name" in the empty registry key,
> > we can't see any newly created reg value name.
> > Thanks.
> > Detlef Riekenberg wrote:
> > > On Mi, 2007-04-04 at 10:36 +0900, Byeong-Sik Jeon wrote:
> > > >
> > > > + /* convert from WCHAR size to maximum required TCHAR size */
> > > > + max_val_name_len *= sizeof(WCHAR) / sizeof(TCHAR);
> > > > +
> > > > valName = HeapAlloc(GetProcessHeap(), 0, max_val_name_len *
> > > > sizeof(TCHAR));
Without UNICODE, sizeof(TCHAR) == 1. This is no effect. CJK multibyte
character is 2 byte size.
string "»õ °ª #1" has 6 characters. It is max_val_name_len.
w/ UNICODE, this string is 6 * sizeof(WCHAR) bytes.
w/o UNICODE, this string is 8 bytes.
8 == space(1) * 2 + #(1) + 1(1) + »õ(2) + °ª(2)
Currently regedit compiled without UNICODE.
RegQueryInfoKey result: max_val_name_len ===> 6;
max_val_name_len++ ===> 7
max_val_name_len * sizeof(TCHAR) ==> 7 * 1
This is bad result. we need 9 or more.
I'm sorry my poor english. but it is true.
If you can't see non english character, please install font "Arial Unicode".
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