指标：显示每天开盘价

#property indicator_chart_window#property indicator_buffers 1#property indicator_color1 White#property indicator_style1 2#property indicator_width1 1
double TodayOpenBuffer[];extern int TimeZoneOfData= 0;//+------------------------------------------------------------------+//| Custom indicator initialization function                         |//+------------------------------------------------------------------+int init(){  SetIndexStyle(0,DRAW_LINE);  SetIndexBuffer(0,TodayOpenBuffer);  SetIndexLabel(0,"Open");  SetIndexEmptyValue(0,0.0);  return(0);}//+------------------------------------------------------------------+//| Custor indicator deinitialization function                       |//+------------------------------------------------------------------+int deinit(){   ObjectsDeleteAll(0,OBJ_TEXT);  return(0);}//+------------------------------------------------------------------+//| Custom indicator iteration function                              |//+------------------------------------------------------------------+int start(){   int lastbar;   int counted_bars= IndicatorCounted();      if (counted_bars>0) counted_bars--;   lastbar = Bars-counted_bars;     DailyOpen(0,lastbar);      return (0);}//+------------------------------------------------------------------+//|                                                                  |//+------------------------------------------------------------------+int DailyOpen(int offset, int lastbar){   int shift;   int tzdiffsec= TimeZoneOfData * 3600;   double barsper30= 1.0*PERIOD_M30/Period();   bool ShowDailyOpenLevel= True;   // lastbar+= barsperday+2;  // make sure we catch the daily open        lastbar= MathMin(Bars-20*barsper30-1, lastbar);

  for(shift=lastbar;shift>=offset;shift--){    TodayOpenBuffer[shift]= 0;     if (ShowDailyOpenLevel)     {       if(TimeDay(Time[shift]-tzdiffsec) != TimeDay(Time[shift+1]-tzdiffsec)){      // day change         TodayOpenBuffer[shift]= Open[shift];         SetText(shift, Time[shift], Open[shift] - 30.0*Point,"                                       ["+TimeToStr(Time[shift]+(6*3600),TIME_DATE)+"星期"+TimeDayOfWeek(Time[shift])+"]", clrWhite,8);            TodayOpenBuffer[shift+1]= 0;                                                           // avoid stairs in the line       }       else{         TodayOpenBuffer[shift]= TodayOpenBuffer[shift+1];       }    }   }   return(0);}

void SetText(string name, int a_datetime_4, double a_price_8, string a_text_16, color a_color_24,int font_size){   ObjectCreate(name, OBJ_TEXT, 0, a_datetime_4, a_price_8);   ObjectSetText(name, a_text_16,font_size);   ObjectSet(name, OBJPROP_COLOR, a_color_24); }