Standard Chart Library Doesn't Work

[Omega J Msigwa]

Folks ..

I have been trying to use the standard Library for chart.. Using this code

#include <Charts\Chart.mqh>
CChart         m_chart;

int OnInit()
 {
//---
   m_chart.AutoScroll(true);
   m_chart.ColorBackground(clrBlack);
   m_chart.ShowGrid(false);
   m_chart.Mode(CHART_CANDLES);
   m_chart.Shift(true);
   m_chart.ShowPeriodSep(true);
   m_chart.ShowLineAsk(true);
   m_chart.ShowLineBid(true);
   m_chart.Scale(2);
   m_chart.ColorBarUp(clrCrimson);
   m_chart.ColorBarDown(clrBlue);
   m_chart.ColorCandleBear(clrBlue);
   m_chart.ColorCandleBull(clrCrimson);
//---

return(INIT_SUCCEEDED);
 }

It Doesn't work what's wrong here

[Vladimir Karputov]

Two methods need to be applied:

//+------------------------------------------------------------------+
//|                                    CChart Current Properties.mq5 |
//|                              Copyright © 2020, Vladimir Karputov |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2020, Vladimir Karputov"
#property link      "https://www.mql5.com"
#property version   "1.00"
#property script_show_inputs
//---
#include <Charts\Chart.mqh>
//---
CChart         m_chart;                      // object of CTrade class
//--- input parameters
input int      Input1=9;
//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
void OnStart()
  {
//---
   m_chart.Attach();
   m_chart.AutoScroll(true);
   m_chart.ColorBackground(clrBlack);
   m_chart.ShowGrid(false);
   m_chart.Mode(CHART_CANDLES);
   m_chart.Shift(true);
   m_chart.ShowPeriodSep(true);
   m_chart.ShowLineAsk(true);
   m_chart.ShowLineBid(true);
   m_chart.Scale(2);
   m_chart.ColorBarUp(clrCrimson);
   m_chart.ColorBarDown(clrBlue);
   m_chart.ColorCandleBear(clrBlue);
   m_chart.ColorCandleBull(clrCrimson);
   m_chart.Detach();
  }
//+------------------------------------------------------------------+

Properties
Attach	Assigns the current chart to the class instance
Detach	Detaches chart from the class instance

[Omega J Msigwa]

Vladimir Karputov:

Two methods need to be applied:

Properties
Attach	Assigns the current chart to the class instance
Detach	Detaches chart from the class instance

isn't there any way rather than attach and detach methods before and after my chart properties ....i don't like the way it closes a chart when i made a change on the chart  timeframe .... Basically when Init and deinit event occurs

[Omega J Msigwa]

Omega J Msigwa:

isn't there any way rather than attach and detach methods before and after my chart properties ....i don't like the way it closes a chart when i made a change on the chart  timeframe .... Basically when Init and deinit event occurs

i found out what was wrong it works well thank you ..your method works as well

[Vladimir Karputov]

Omega J Msigwa :

isn't there any way rather than attach and detach methods before and after my chart properties ....i don't like the way it closes a chart when i made a change on the chart  timeframe .... Basically when Init and deinit event occurs

Pay attention to which program you are working in: in an Expert Advisor or in a script.