Return the character used for separating arguments
TCHAR GetListSeparator( ) const;
Returns the character used to separate arguments in Excel formulae, in the language that was set when Excel was started.
If the user language is changed while Excel is running, the character returned by this call may no longer be valid. The character is set during the XllOpen event, and is cached in the CXllApp object for its lifetime.
Note that this function can be used during worksheet functions, but CXllApp::GetInternational, which returns an up-to-date value, cannot be called during worksheet functions.