Would you please help me to write a code that makes the first candle visible in a chart (switch to first candle when chart is launched)

Vladimir Karputov 2015.05.10 08:37 #1

MT5.2014 :

Hi everyone,

I need an urgent help with writing a few lines of code that makes the first candle visible in a chart, in other words, when the chart is opened, it automatically scrolls the chart to the first candle available in that chart.

I would appreciate your kind help in advance

You should use ChartNavigate.

Alain Verleyen 2015.05.10 08:44 #2

MT5.2014:

Hi everyone,

I need an urgent help with writing a few lines of code that makes the first candle visible in a chart, in other words, when the chart is opened, it automatically scrolls the chart to the first candle available in that chart.

I would appreciate your kind help in advance

No need for code.

Disable AutoScroll. (this can be saved in the Default template).
Press 'Home' key.

MT5.2014 2015.05.11 10:42 #3

Alain Verleyen:

No need for code.

Disable AutoScroll. (this can be saved in the Default template).
Press 'Home' key.

Thanks for your help, but I want this to happen once automatically with an indicator before that indicator starts its calculations.

MT5.2014 2015.05.11 10:45 #4

Karputov Vladimir:
You should use ChartNavigate.

Thanks for your help, I am a beginner so, sorry for stupid questions.

I tried

{ChartNavigate(0,CHART_BEGIN,0);}

But it did not work, I placed it in "int OnInit()", should I place it somewhere else in the indicator? Please help me. I appreciate your kind guidance.

How to Draw Arrow MT4 installation need Proxy Need help to add

Vladimir Karputov 2015.05.11 14:32 #5

MT5.2014:

Thanks for your help, I am a beginner so, sorry for stupid questions.

I tried

{ChartNavigate(0,CHART_BEGIN,0);}

But it did not work, I placed it in "int OnInit()", should I place it somewhere else in the indicator? Please help me. I appreciate your kind guidance.

You want to use:

indicator
script
Advisor?

MT5.2014 2015.05.11 16:11 #6

Karputov Vladimir:

You want to use:

indicator
script
Advisor?

Sorry that I did not explain more,

Actually, it is an indicator. I want to make first candle visible (to load all the history for that symbol before the indicator starts its calculations). I want it to happen automatically every time the indicator starts and it is enough to happen once before all other calculations start, so it does not need to be in a loop.

Thank you

Questions from Beginners MQL5 Challange! How good u How to wait for

Vladimir Karputov 2015.05.11 16:40 #7

MT5.2014 :

Sorry that I did not explain more,

Actually, it is an indicator. I want to make first candle visible (to load all the history for that symbol before the indicator starts its calculations). I want it to happen automatically every time the indicator starts and it is enough to happen once before all other calculations start, so it does not need to be in a loop.

Thank you

What is "the first candle"? Picture, please.

MT5.2014 2015.05.12 03:56 #8

Karputov Vladimir:
What is "the first candle"? Picture, please.

By first candle, I mean the first available bar in a chart (you cannot go further to the left), please see the picture:

Files:

GBPUSDWeekly.png 45 kb

Vladimir Karputov 2015.05.12 04:24 #9

This indicator scrolls graph:

//+------------------------------------------------------------------+
//|                                                  CHART_BEGIN.mq5 |
//|                              Copyright © 2015, Vladimir Karputov |
//|                                           http://wmua.ru/slesar/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2015, Vladimir Karputov"
#property link      "http://wmua.ru/slesar/"
#property version   "1.00"
#property indicator_chart_window
#property indicator_plots     0

bool start=false;
//--- input parameters
input int      begin_bar=0;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- 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[])
  {
//---
   if(!start)
      first_bar();
//--- return value of prev_calculated for next call
   return(rates_total);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
bool first_bar(void)
  {
//--- get handle of the current chart
   long handle=ChartID();
   if(handle>0) // if successful, additionally set up the chart
     {
      //--- disable auto scroll
      ChartSetInteger(handle,CHART_AUTOSCROLL,false);
      //--- set a shift from the right chart border
      ChartSetInteger(handle,CHART_SHIFT,true);
      //--- draw candlesticks
      ChartSetInteger(handle,CHART_MODE,CHART_CANDLES);
      //--- set the display mode for tick volumes
      ChartSetInteger(handle,CHART_SHOW_VOLUMES,CHART_VOLUME_TICK);
      //--- scroll 0 bars to the right of the history start
      ChartNavigate(handle,CHART_BEGIN,begin_bar);
     }
   return(true);
  }
//+------------------------------------------------------------------+

MT5.2014 2015.05.13 07:33 #10

Karputov Vladimir:

This indicator scrolls graph:

Thank you so much for your help, it worked.