Windows: locale

The WinAPI stores locale ids in the LCID «data type».

A locale id can be created with the MAKELCID(…) macro.

Each thread is assigned a locale, initially the system default locale, which can be changed with SetThreadLocale().

The Input Locale (aka input language) is a per-process setting that specifies the used input language (such as German) and an used input method (for example a keyboard).

Input Locales can be added and removed through the Keyboard and Language tab in the Region and Language control panel.

What is the relationship to the registry key HKEY_CURRENT_USER\Software\Microsoft\Input\Locales.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Nls\Locale

Languages

locale

The .NET class System.Globalization.CultureInfo

International settings

In Excel, locale related information can be queried with VBA using the application.international property.

wmic os get locale

Raymond Chen: What are these directories called 0409 and 1033?