Mq4にメール機能を追加したい

Question

MT4のインジケーターでアラートは追加できたのですが、メール機能を追加するのが上手くいきません。

どのようにすればメール機能が追加できますでしょうか。

//---- indicator settings
#property indicator_chart_window
#property indicator_buffers 4
#property indicator_color1 Blue
#property indicator_color2 Red
#property indicator_color3 Blue
#property indicator_color4 Red
#property indicator_width1 1
#property indicator_width2 1
#property indicator_width3 1
#property indicator_width4 1

//---- indicator parameters
extern int Length = 9; // Price Channel Period
extern int Applied_Price = 0; // Applied Price:0-C,1-O,2-H,3-L,4-Median,5-Typical,6-Weighted
extern double Risk = 3; // Risk Factor in units (0...10)
extern int UseReEntry = 0; // Re-Entry Mode: 0-off,1-on
extern int AlertMode = 0; // Alert Mode: 0-off,1-on

//---- indicator buffers
double UpSignal[];
double DnSignal[];
double UpEntry[];
double DnEntry[];
double smax[];
double smin[];
double trend[];

bool UpTrendAlert=false, DownTrendAlert=false;
datetime prevTime;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
string short_name;
//---- drawing settings
IndicatorBuffers(7);

SetIndexStyle(0,DRAW_ARROW);
SetIndexArrow(0,108);
SetIndexStyle(1,DRAW_ARROW);
SetIndexArrow(1,108);
SetIndexStyle(2,DRAW_ARROW);
//SetIndexArrow(2,108);
SetIndexStyle(3,DRAW_ARROW);
//SetIndexArrow(3,108);
IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS));
//---- indicator short name
IndicatorShortName("PriceChannel_Signal("+Length+")");
SetIndexLabel(0,"UpSignal");
SetIndexLabel(1,"DnSignal");
SetIndexLabel(2,"UpRe-Entry");
SetIndexLabel(3,"DnRe-Entry");
SetIndexDrawBegin(0,Length);
SetIndexDrawBegin(1,Length);
SetIndexDrawBegin(2,Length);
SetIndexDrawBegin(3,Length);
//---- indicator buffers mapping
SetIndexBuffer(0,UpSignal);
SetIndexBuffer(1,DnSignal);
SetIndexBuffer(2,UpEntry);
SetIndexBuffer(3,DnEntry);
SetIndexBuffer(4,smax);
SetIndexBuffer(5,smin);
SetIndexBuffer(6,trend);

//---- initialization done
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
int limit;
if(Bars<=Length) return(0);
int CountedBars=IndicatorCounted();
//---- check for possible errors
if (CountedBars<0) return(-1);
//---- last counted bar will be recounted
if (CountedBars>0) CountedBars--;
limit=Bars-CountedBars;
//----
for(int i=limit; i>=0; i--)
{
double price = iMA(NULL,0,1,0,0,Applied_Price,i);
double price1 = iMA(NULL,0,1,0,0,Applied_Price,i+1);
double price2 = iMA(NULL,0,1,0,0,Applied_Price,i+2);

double hi = High[iHighest(NULL,0,MODE_HIGH,Length,i)];
double lo = Low[iLowest(NULL,0,MODE_LOW,Length,i)];

smax[i] = hi - (33-Risk)(hi-lo)/100;
smin[i] = lo + (33-Risk)(hi-lo)/100;

trend[i]=trend[i+1];

if ( price > smax[i])  trend[i]=1; 
if ( price < smin[i])  trend[i]=-1;

  if(trend[i]>0)
   {
   if (trend[i+1]<0) UpSignal[i] = Low[i]-0.5*iATR(NULL,0,Length,i);
   if (UseReEntry > 0 && price > smax[i] && price1 <= smax[i+1]) UpEntry[i] = Low[i]-0.5*iATR(NULL,0,Length,i); 
   DnSignal[i]=EMPTY_VALUE; DnEntry[i]=EMPTY_VALUE;
   }
   else
   if(trend[i]<0)
   {
   if (trend[i+1]>0) DnSignal[i] = High[i]+0.5*iATR(NULL,0,Length,i);
   if (UseReEntry > 0 && price < smin[i] && price1 >= smin[i+1]) DnEntry[i] = High[i]+0.5*iATR(NULL,0,Length,i); 
   UpSignal[i]=EMPTY_VALUE; UpEntry[i]=EMPTY_VALUE;
   }
         

//----------
if (i==0 && AlertMode > 0)
{
if (trend[i] > 0 && Volume[0]>0)
{
if (trend[i+1]<0 && !UpTrendAlert)
{
string Message = " "+Symbol()+" M"+Period()+": Signal for BUY";
Alert (Message);
UpTrendAlert=true; DownTrendAlert=false;
}

         if (UseReEntry>0 && trend[i+1]>0 && price1 > smax[i] && price2 < smax[i+1] && Time[i]!=prevTime)
         {
         Message = " "+Symbol()+" M"+Period()+": Re-Entry for BUY";
         Alert (Message);
         prevTime = Time[i];
         }
      }
      else
      if (trend[i] < 0 && Volume[0]>0)
      {
        if ( trend[i+1]>0 && !DownTrendAlert)
         {
         Message = " "+Symbol()+" M"+Period()+": Signal for SELL";
         Alert (Message); 
         DownTrendAlert=true; UpTrendAlert=false;     
         }
         
         if (UseReEntry>0 && trend[i+1]<0 && price1 < smin[i] && price2 > smin[i+1] && Time[i]!=prevTime)
         {
         Message = " "+Symbol()+" M"+Period()+": Re-Entry for SELL";
         Alert (Message);
         prevTime = Time[i];
         }
      } 	  
  }	
} 	         

//---- done
return(0);
}
//+------------------------------------------------------------------+

Answer 1

if (trend[i+1]<0 && !UpTrendAlert)
{
string Message = " " + Symbol() + " M" + Period() + ": Signal for BUY";
if (SendMail("Signal for BUY", Message) == 0) {
Alert(Message + " [Mail delivery failed]");
} else {
Alert(Message + " [Mail delivered Successfully]");
}
UpTrendAlert=true; DownTrendAlert=false;
}

を追加してみましたが、できませんでした。