RE: Win32::OLE - Module Option "CP"
"Jan Dubois" <[email protected]>
| Newsgroups | gmane.comp.lang.perl.active-perl |
|---|---|
| Organization | ActiveState Software Inc |
| Message-ID | <[email protected]> |
On Fri, 10 Sep 2010, Ludwig, Michael wrote: > The Win32::OLE manual says the following about the CP option: > > ---- > This variable is used to determine the codepage used by all > translations between Perl strings and Unicode strings used by the OLE > interface. The default value is CP_ACP, which is the default ANSI > codepage. Other possible values are CP_OEMCP, CP_MACCP, CP_UTF7 and > CP_UTF8. These constants are not exported by default. > ---- > > I don't understand the impact of this setting. I presume there isn't > any, but I want to be sure. OLE Automation transfers strings internally encoded in UTF-16 (as BSTR types). Win32::OLE needs to transform them into regular Perl strings. By default it converts to CP_ACP, the standard 8-bit character set on Windows. That means any Unicode character that is not representable in CP_ACP will be translated to a "replacement" character (e.g. '?'). If you want to preserve the original Unicode string, then you need to tell Win32::OLE to use CP_UTF8 instead. CP_ACP is just the default for backwards compatibility reasons. You probably don't want to use any of the other encodings, like CP_MACCP or CP_UTF7, ever. :) Cheers, -Jan _______________________________________________ ActivePerl mailing list [email protected] To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs