public int GetItem([NativeTypeName("const GUID &")] Guid *rguid, [NativeTypeName("ITfLangBarItem **")] ITfLangBarItem **ppItem)
 {
     return(((delegate * unmanaged <ITfLangBarItemMgr *, Guid *, ITfLangBarItem **, int>)(lpVtbl[4]))((ITfLangBarItemMgr *)Unsafe.AsPointer(ref this), rguid, ppItem));
 }
 public HRESULT Next([NativeTypeName("ULONG")] uint ulCount, ITfLangBarItem **ppItem, [NativeTypeName("ULONG *")] uint *pcFetched)
 {
     return(((delegate * unmanaged <IEnumTfLangBarItems *, uint, ITfLangBarItem **, uint *, int>)(lpVtbl[4]))((IEnumTfLangBarItems *)Unsafe.AsPointer(ref this), ulCount, ppItem, pcFetched));
 }
 public int GetItems([NativeTypeName("ULONG")] uint ulCount, [NativeTypeName("ITfLangBarItem **")] ITfLangBarItem **ppItem, [NativeTypeName("TF_LANGBARITEMINFO *")] TF_LANGBARITEMINFO *pInfo, [NativeTypeName("DWORD *")] uint *pdwStatus, [NativeTypeName("ULONG *")] uint *pcFetched)
 {
     return(((delegate * unmanaged <ITfLangBarItemMgr *, uint, ITfLangBarItem **, TF_LANGBARITEMINFO *, uint *, uint *, int>)(lpVtbl[12]))((ITfLangBarItemMgr *)Unsafe.AsPointer(ref this), ulCount, ppItem, pInfo, pdwStatus, pcFetched));
 }