If you're diving into the trading world with MetaTrader 5, you might want to check out the ColorJFatl_Digit indicator. This handy tool not only gives you a heads-up on market movements but also sends out alerts via email and push notifications right to your mobile device.
Let’s break down some of the key updates made to the indicator code that enable these alerts, email notifications, and push notifications:
- New input parameters have been introduced:
- Three new functions have been added to the end of the indicator code: BuySignal(), SellSignal(), and GetStringTimeframe():
- The calls to BuySignal() and SellSignal() functions have been added after the indicator calculation cycles in the OnCalculate() block:
//---- Input variables for alerts input uint NumberofBar=1; //Bar number for the signal input bool SoundON=true; //Enable alerts input uint NumberofAlerts=2; //Number of alerts input bool EMailON=false; //Enable mailing the signal input bool PushON=false; //Enable sending the signal to mobile devices
//+------------------------------------------------------------------+ //| Buy signal function | //+------------------------------------------------------------------+ void BuySignal(string SignalSirname,// text of the indicator name for email and push messages double &ColorArray[],// color index buffer int ColorIndex,// color index in the color index buffer to generate a signal const int Rates_total, // the current number of bars const int Prev_calculated, // the number of bars on the previous tick const double &Close[], // close price const int &Spread[]) // spread { //--- static uint counter=0; if(Rates_total!=Prev_calculated) counter=0; bool BuySignal=false; bool SeriesTest=ArrayGetAsSeries(ColorArray); int index,index1; if(SeriesTest) { index=int(NumberofBar); index1=index+1; } else { index=Rates_total-int(NumberofBar)-1; index1=index-1; } if(ColorArray[index1]!=ColorIndex && ColorArray[index]==ColorIndex) BuySignal=true; if(BuySignal && counter<=NumberofAlerts) { counter++; MqlDateTime tm; TimeToStruct(TimeCurrent(),tm); string text=TimeToString(TimeCurrent(),TIME_DATE)+" "+string(tm.hour)+":"+string(tm.min); SeriesTest=ArrayGetAsSeries(Close); if(SeriesTest) index=int(NumberofBar); else index=Rates_total-int(NumberofBar)-1; double Ask=Close[index]; double Bid=Close[index]; SeriesTest=ArrayGetAsSeries(Spread); if(SeriesTest) index=int(NumberofBar); else index=Rates_total-int(NumberofBar)-1; Bid+=Spread[index]; string sAsk=DoubleToString(Ask,_Digits); string sBid=DoubleToString(Bid,_Digits); string sPeriod=GetStringTimeframe(ChartPeriod()); if(SoundON) Alert("BUY signal \n Ask=",Ask,"\n Bid=",Bid,"\n currtime=",text,"\n Symbol=",Symbol()," Period=",sPeriod); if(EMailON) SendMail(SignalSirname+": BUY signal alert","BUY signal at Ask="+sAsk+", Bid="+sBid+", Date="+text+" Symbol="+Symbol()+" Period="+sPeriod); if(PushON) SendNotification(SignalSirname+": BUY signal at Ask="+sAsk+", Bid="+sBid+", Date="+text+" Symbol="+Symbol()+" Period="+sPeriod); } //--- } //+------------------------------------------------------------------+ //| Sell signal function | //+------------------------------------------------------------------+ void SellSignal(string SignalSirname, // text of the indicator name for email and push messages double &ColorArray[], // color index buffer int ColorIndex, // color index in the color index buffer to generate a signal const int Rates_total, // the current number of bars const int Prev_calculated, // the number of bars on the previous tick const double &Close[], // close price const int &Spread[]) // spread { //--- static uint counter=0; if(Rates_total!=Prev_calculated) counter=0; bool SellSignal=false; bool SeriesTest=ArrayGetAsSeries(ColorArray); int index,index1; if(SeriesTest) { index=int(NumberofBar); index1=index+1; } else { index=Rates_total-int(NumberofBar)-1; index1=index-1; } if(ColorArray[index1]!=ColorIndex && ColorArray[index]==ColorIndex) SellSignal=true; if(SellSignal && counter<=NumberofAlerts) { counter++; MqlDateTime tm; TimeToStruct(TimeCurrent(),tm); string text=TimeToString(TimeCurrent(),TIME_DATE)+" "+string(tm.hour)+":"+string(tm.min); SeriesTest=ArrayGetAsSeries(Close); if(SeriesTest) index=int(NumberofBar); else index=Rates_total-int(NumberofBar)-1; double Ask=Close[index]; double Bid=Close[index]; SeriesTest=ArrayGetAsSeries(Spread); if(SeriesTest) index=int(NumberofBar); else index=Rates_total-int(NumberofBar)-1; Bid+=Spread[index]; string sAsk=DoubleToString(Ask,_Digits); string sBid=DoubleToString(Bid,_Digits); string sPeriod=GetStringTimeframe(ChartPeriod()); if(SoundON) Alert("SELL signal \n Ask=",Ask,"\n Bid=",Bid,"\n currtime=",text,"\n Symbol=",Symbol()," Period=",sPeriod); if(EMailON) SendMail(SignalSirname+": SELL signal alert","SELL signal at Ask="+sAsk+", Bid="+sBid+", Date="+text+" Symbol="+Symbol()+" Period="+sPeriod); if(PushON) SendNotification(SignalSirname+": SELL signal at Ask="+sAsk+", Bid="+sBid+", Date="+text+" Symbol="+Symbol()+" Period="+sPeriod); } //--- } //+------------------------------------------------------------------+ //| Getting the timeframe as a string | //+------------------------------------------------------------------+ string GetStringTimeframe(ENUM_TIMEFRAMES timeframe) { //---- return(StringSubstr(EnumToString(timeframe),7,-1)); //---- }
//--- BuySignal("ColorJFatl_Digit_Alert",ColorExtLineBuffer,2,rates_total,prev_calculated,close,spread); SellSignal("ColorJFatl_Digit_Alert",ColorExtLineBuffer,0,rates_total,prev_calculated,close,spread); //---
Remember, ColorExtLineBuffer is the name of the color index buffer used to store line color in the form of an index.
It's important to note that only one call to the BuySignal() and SellSignal() functions should be used in the OnCalculate() block of the indicator code.
This indicator also makes use of the classes from the SmoothAlgorithms.mqh library, so be sure to copy it to <terminal_data_folder>\MQL5\Include. You can find detailed guidance on using these classes in the article "Averaging Price Series for Intermediate Calculations Without Using Additional Buffers".
Fig.1. The ColorJFatl_Digit_Alert indicator on the chart
Fig.2. The ColorJFatl_Digit_Alert indicator Generating alerts.
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