iCustom调用的使用问题

2011-10-05 · 4738 阅读

//+------------------------------------------------------------------+
  //|                                                       Bands.mq4 |
  //|                   Copyright ?2005, MetaQuotes Software Corp. |
  //|                                     http://www.metaquotes.net/ |
  //+------------------------------------------------------------------+
  #property copyright \"Copyright ?2005, MetaQuotes Software Corp.\"
  #property link    \"http://www.metaquotes.net/\"

  #property indicator_chart_window
  #property indicator_buffers 3
  #property indicator_color1 White
  #property indicator_color2 White
  #property indicator_color3 White
  //---- indicator parameters
  extern int BandsPeriod=20;
  extern int BandsShift=0;
  extern double BandsDeviations=2.0;
  //---- buffers
  double MovingBuffer[];
  double UpperBuffer[];
  double LowerBuffer[];
  //+------------------------------------------------------------------+
  //| Custom indicator initialization function                      |
  //+------------------------------------------------------------------+
  int init()
{
  //---- indicators
   SetIndexStyle(0,DRAW_LINE,1);
   SetIndexBuffer(0,MovingBuffer);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexBuffer(1,UpperBuffer);
   SetIndexStyle(2,DRAW_LINE);
   SetIndexBuffer(2,LowerBuffer);
  //----
   SetIndexDrawBegin(0,BandsPeriod+BandsShift);
   SetIndexDrawBegin(1,BandsPeriod+BandsShift);
   SetIndexDrawBegin(2,BandsPeriod+BandsShift);
  //----
   return(0);
}
  //+------------------------------------------------------------------+
  //| Bollinger Bands                                                 |
  //+------------------------------------------------------------------+
  int start()
{
   int i,k,counted_bars=IndicatorCounted();
   double deviation;
   double sum,oldval,newres;
  //----
   if(Bars=i)
      {
         newres=Close[k]-oldval;
         sum+=newres*newres;
         k--;
      }
      deviation=BandsDeviations*MathSqrt(sum/BandsPeriod);
      UpperBuffer[i]=oldval+deviation;
      LowerBuffer[i]=oldval-deviation;
      i--;
   }
  //----
   return(0);
}
  //+------------------------------------------------------------------+

  我想在EA中计算穿越上轨和下轨的次数~~学了半天只能调用第一根柱子的
  不知道怎么调用第二第三...那些柱子的值~~~~
  各位老大帮帮忙
  小的谢谢了

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