EnumDateFormatsExW function (winnls.h)
Enumerates the long date, short date, or year/month formats that are available for a specified locale.
Syntax
BOOL EnumDateFormatsExW(
[in] DATEFMT_ENUMPROCEXW lpDateFmtEnumProcEx,
[in] LCID Locale,
[in] DWORD dwFlags
);
Parameters
[in] lpDateFmtEnumProcEx
Pointer to an application-defined callback function. For more information, see EnumDateFormatsProcEx.
[in] Locale
Locale identifier that specifies the locale for which to retrieve date format information. You can use the MAKELCID macro to create an identifier or use one of the following predefined values.
Windows Vista and later: The following custom locale identifiers are also supported.[in] dwFlags
Flag specifying date formats. For detailed definitions, see the dwFlags parameter of EnumDateFormatsExEx.
Return value
Returns a nonzero value if successful, or 0 otherwise. To get extended error information, the application can call GetLastError, which can return one of the following error codes:
- ERROR_INVALID_FLAGS. The values supplied for flags were not valid.
- ERROR_INVALID_PARAMETER. Any of the parameter values was invalid.
Remarks
This function enumerates all date formats for the specified locale, including alternate calendars, if any. However, the calendar identifier is not enumerated along with the date format, making formats for locales with alternate calendars difficult to use.
This function can enumerate data from custom locales. Data is not guaranteed to be the same from computer to computer or between runs of an application. If your application must persist or transmit data, see Using Persistent Locale Data.
When the ANSI version of this function is used with a Unicode-only locale identifier, the function can succeed because the operating system uses the system code page. However, characters that are undefined in the system code page appear in the string as a question mark (?).
The application should use EnumDateFormatsEx (instead of EnumDateFormats) to enumerate date formats for locales with alternate calendars.
Note
The winnls.h header defines EnumDateFormatsEx as an alias which automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.
Requirements
Requirement | Value |
---|---|
Minimum supported client | Windows 2000 Professional [desktop apps only] |
Minimum supported server | Windows 2000 Server [desktop apps only] |
Target Platform | Windows |
Header | winnls.h (include Windows.h) |
Library | Kernel32.lib |
DLL | Kernel32.dll |