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EnumSystemGeoNames function

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Enumerates the two-letter International Organization for Standardization (ISO) 3166-1 codes or numeric United Nations (UN) Series M, Number 49 (M.49) codes for geographical locations that are available on the operating system.

Syntax

C++


BOOL WINAPI EnumSystemGeoNames(
  _In_     GEOCLASS         geoClass,
  _In_     GEO_ENUMNAMEPROC geoEnumProc,
  _In_opt_ LPARAM           data
);

Parameters

geoClass [in]: The geographical location class for which to enumerate the available two-letter ISO 3166-1 or numeric UN M.49 codes.
geoEnumProc [in]: Pointer to the application-defined callback function Geo_EnumNameProc. The EnumSystemGeoNames function calls this callback function for each of the two-letter ISO 3166-1 or numeric UN M.49 codes for geographical locations that are available on the operating system until callback function returns FALSE.
data [in, optional]: Application-specific information to pass to the callback function that the genEnumProc parameter specifies.

Return value

Returns a nonzero value if successful, or 0 otherwise. To get extended error information, call GetLastError, which can return one of the following error codes:

Return code	Description
ERROR_INVALID_FLAGS	The values supplied for flags were not valid.
ERROR_INVALID_PARAMETER	A parameter value was not valid.

Remarks

For information about two-letter ISO 3166-1 codes, see Country Codes - ISO 3166. For information about numeric UN M.49 codes, see Standard country or area codes for statistical use (M49).

Requirements

Minimum supported client	Windows 10, version 1709 [desktop apps only]
Minimum supported server	Windows Server 2016 [desktop apps only]
Header	Winnls.h (include Windows.h)
Library	Kernel32.lib
DLL	Kernel32.dll