uses Sysutils;

procedure TfrmMain.CheckForAddFlow;
var
  SearchRec: TSearchRec;
  LibHandle: Cardinal;
  ResStream: TResourceStream;
begin
  if FindFirst('your-lib.dll', faAnyFile, SearchRec) <> 0 then
  begin
    {Загружаем библиотеку}
    LibHandle := LoadLibrary('your_lib.dll');
    if Handle <> 0 then
      {Загружаем ресурс}
      ResStream := TResourceStream.Create(LibHandle,
        PChar('res_name'), RT_BITMAP);
    try
      ImageViewer.Picture.Graphic.LoadFromStream(ResStream);
    finally
      ResStream.Free();
    end;
  end;
end;

//ShowMessage(IntToStr(AllocMemCount) + ':' + IntToStr(AllocMemSize));
end;