EnumDateFormatsProc callback function

An application-defined callback function that processes date format information provided by the EnumDateFormats function. The DATEFMT_ENUMPROC type defines a pointer to this callback function. EnumDateFormatsProc is a placeholder for the application-defined function name.


BOOL CALLBACK EnumDateFormatsProc(
  _In_ LPTSTR lpDateFormatString


lpDateFormatString [in]

Pointer to a buffer containing a null-terminated date format string. This string is a long or short date format, depending on the value of the dwFlags parameter of EnumDateFormats.

Return value

Returns TRUE to continue enumeration or FALSE otherwise.


An EnumDateFormatsProc function can carry out any desired task. The application registers this function by passing its address to the EnumDateFormats function.

This callback function can process enumerated 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.


Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]


Winnls.h (include Windows.h)

See also

National Language Support
National Language Support Functions