public LanguagePreferences(IServiceProvider site, Guid languageGuid)
{
site.AssertShellIsInitialized();
_textMgr = (IVsTextManager)site.GetService(typeof(SVsTextManager));
if (_textMgr == null)
{
throw new NotSupportedException("");
}
var langPrefs = new LANGPREFERENCES[1];
langPrefs[0].guidLang = languageGuid;
ErrorHandler.ThrowOnFailure(_textMgr.GetUserPreferences(null, null, langPrefs, null));
_preferences = langPrefs[0];
var guid = typeof(IVsTextManagerEvents2).GUID;
IConnectionPoint connectionPoint = null;
(_textMgr as IConnectionPointContainer)?.FindConnectionPoint(ref guid, out connectionPoint);
if (connectionPoint != null)
{
connectionPoint.Advise(this, out _cookie);
}
}