MT4在主圖上標出目前價格

#property strict
#property indicator_chart_window     //將這個指標秀在主圖上
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()       //這個函式只在程式開始前執行一次
  {
//--- indicator buffers mapping
 
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const datetime &time[],
                const double &open[],
                const double &high[],
                const double &low[],
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[])
  {
//---寫出目前價格
   iSetLable("ClosePrice", "Price:"+DoubleToStr(iClose(Symbol(),0,0),4), 10, 5, 12, "Arial", Yellow);
//--- return value of prev_calculated for next call
   return(rates_total);
  }
//+------------------------------------------------------------------+
void iSetLable(string LableName, string LableDoc, int LableX, int LableY, int DocSize, string DocStyle, color DocColor){  //此函式參考自索羅斯都要用的外匯交易術
ObjectCreate(LableName, OBJ_LABEL, 0, 0, 0); //建立物件和它的名稱
ObjectSetText(LableName, LableDoc, DocSize, DocStyle, DocColor);  //物件要秀出的文本內容
ObjectSet(LableName, OBJPROP_XDISTANCE, LableX);  //X座標
ObjectSet(LableName, OBJPROP_XDISTANCE, LableY);  // Y座標
}