问题
I am in the process of developing a application which displays dialogs depending on the OS language. How I can get the OS language using C++ or Windows APIs (Windows 2008/Vista/7)?
回答1:
There are several functions to do this in Windows, depending on what format you want the information in. Prior to Windows Vista, the language information was encoded into a LCID (Locale Id) which includes language, as well as some information about sorting and formatting.
For Windows Vista and Windows 7, a more flexible system called Locale Names was devised. GetSystemDefaultLocaleName
Use this if you want to work on Win2k and WinXP. GetSystemDefaultLCID
回答2:
The accepted answer to this question is wrong. You should not make user interface decisions based on the default locale. Use GetDefaultUILanguage for this.
回答3:
Do you resolve this problem?
If answer is No,LPWSTR lpLocalName=NULL is wrong.LPWSTR lpLocalName=NULL ----> WCHAR localName[LOCALE_NAME_MAX_LENGTH] is right.
Because No memory allocation is in GetUserDefaultLocalName.
来源：https://stackoverflow.com/questions/2153435/how-to-get-os-language-using-c-api