IShellItemArray GetFolders([In] LIBRARYFOLDERFILTER lff, in Guid riid);
object GetFolders([In] LIBRARYFOLDERFILTER lff, in Guid riid);
public HRESULT GetFolders(LIBRARYFOLDERFILTER lff, [NativeTypeName("const IID &")] Guid *riid, void **ppv) { return(((delegate * unmanaged <IShellLibrary *, LIBRARYFOLDERFILTER, Guid *, void **, int>)(lpVtbl[7]))((IShellLibrary *)Unsafe.AsPointer(ref this), lff, riid, ppv)); }