Need a sample code

Quoting hoichoi

Disliked

Hi I need a little help here. I need a code sample to build my own indicator.. but any basic guidance will help as i have little knowledge about coding. What I want is indicator will paint a simple line or object after bar is closed. and will never repaint .. it can be straight line .. for example indicator will draw a small line after recent bar close .. line value will be middle point of the last bar .. can anyone send me a code example on which i can work on further? thanks

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#property strict
#property indicator_chart_window
#define suffix "BarCloseLine"
 
int start(){
   static datetime newbar=iTime(NULL,0,0);
   if(newbar>=Time[0])return 0;
   newbar=Time[0];
   ObjectCreate(0,suffix+(string)newbar,OBJ_HLINE,0,Time[1],(Close[1]+Open[1])*0.5);
   return 0;}
 
int deinit(){
   ObjectsDeleteAll(0,suffix);
   return 0;}

Quoting Beerrun

Disliked

{quote} Something like this: #property strict #property indicator_chart_window #define suffix "BarCloseLine" int start(){ static datetime newbar=iTime(NULL,0,0); if(newbar>=Time[0])return 0; newbar=Time[0]; ObjectCreate(0,suffix+(string)newbar,OBJ_HLINE,0,Time[1],(Close[1]+Open[1])*0.5); return 0;} int deinit(){ ObjectsDeleteAll(0,suffix); return 0;}

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Quoting Nicholishen

Disliked

{quote} You shouldn't start teaching someone by using deprecated (way long time ago) handlers.

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#property strict
#property indicator_chart_window
#define suffix "BarCloseLine"
 
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[]){
 
   static datetime newbar=iTime(NULL,0,0);
   if(newbar>=time[0])return 0;
   newbar=time[0];
   ObjectCreate(0,suffix+(string)newbar,OBJ_HLINE,0,time[1],(close[1]+open[1])*0.5);
   return rates_total;
   }
 
void OnDeinit(const int re){
   ObjectsDeleteAll(0,suffix);
   }

Quoting Beerrun

Disliked

{quote} He asked for an example... You are correct though... #property strict #property indicator_chart_window #define suffix "BarCloseLine" 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[]){ static datetime newbar=iTime(NULL,0,0); if(newbar>=time[0])return 0; newbar=time[0]; ObjectCreate(0,suffix+(string)newbar,OBJ_HLINE,0,time[1],(close[1]+open[1])*0.5); return...

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#include <chartobjects/chartobjectslines.mqh>
#include <arrays/list.mqh>
 
int OnInit() {
   return(INIT_SUCCEEDED);
}
 
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[])
{
   static CList garbage_collector;
   if (rates_total != prev_calculated) {
      ArraySetAsSeries(high, true);
      ArraySetAsSeries(low, true);
      double pp = (high[1] + low[1]) / 2;
      CChartObjectHLine *line = new CChartObjectHLine();
      garbage_collector.Add(line);
      string name = "__line__thru__" + string(rates_total);
      line.Create(ChartID(), name, 0, pp);
      line.Color(clrBlue);
      line.Style(STYLE_DASHDOT);
   }  
   return rates_total;
}

Quoting Nicholishen

Disliked

{quote} Just some friendly advice... You shouldn't call iTime when the time array is passed into the handler. It's redundant and wastes resources. There are rare bugs when checking time > other time. You should use != instead. Checking time is unnecessary because the handler is already telling you the state of the bars - which leads to the next point... Don't return 0 unless you intend to recalculate the entire indicator. Return rates_total so the next call receives that number as prev_calculated. Then when a new bar is presented the rates_total...

Ignored

Quoting Nicholishen

Disliked

{quote} Just some friendly advice... You shouldn't call iTime when the time array is passed into the handler. It's redundant and wastes resources. There are rare bugs when checking time > other time. You should use != instead. Checking time is unnecessary because the handler is already telling you the state of the bars - which leads to the next point... Don't return 0 unless you intend to recalculate the entire indicator. Return rates_total so the next call receives that number as prev_calculated. Then when a new bar is presented the rates_total...

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Quoting Beerrun

Disliked

{quote} He asked for an example... You are correct though... #property strict #property indicator_chart_window #define suffix "BarCloseLine" 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[]){ static datetime newbar=iTime(NULL,0,0); if(newbar>=time[0])return 0; newbar=time[0]; ObjectCreate(0,suffix+(string)newbar,OBJ_HLINE,0,time[1],(close[1]+open[1])*0.5); return...

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Quoting hoichoi

Disliked

{quote} Thanks Beerrun For helping me out with code. it helps... I asked another question hope you guys know the answere Thanks

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Quoting Beerrun

Disliked

{quote} If you do not delete the object in OnDeinit(const int re) then it should not be changed on the chart. I do not know if that is the case when creating it through the standard library class. OBJ_HLINE draws a continual horizontal line across the chart, OBJ_TREND draws a fixed length line of any angle. Also with OBJ_TREND make sure to ObjectSetInteger(chart_ID,name,OBJPROP_RAY_RIGHT,false) or else the line draws to the right edge of the chart; this is probably set by default with the standard library approach.

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