Alert(StringConcatenate("当前窗口总共有 ",TimeDay(iTime(_Symbol, _Period, 0) - iTime(_Symbol, _Period, Bars-1))," 天K线历史柱子数据！"));

   

  int bars_count=WindowBarsPerChart(); 

  int bar=WindowFirstVisibleBar(); 

   

  Alert(StringConcatenate("当前窗口第一根可见柱/共有可见柱 ",bar,"/",bars_count," 可见柱有 ", TimeDay(iTime(_Symbol, _Period, bar) - iTime(_Symbol, _Period, bar+bars_count))," 天K线历史柱子数据！"));