How to get OS language using C++ API?

Question

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/Vi

Answer 1

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.