bug: ChartOpen

[Jinsong Zhang]

This one work fine as EA:

void OnInit()
{
   
   long chart_2=ChartOpen("AUDUSD",0);
   long chart_3=ChartOpen("EURUSD",0);  
   
   Print(chart_2," ",chart_3);
   ChartClose(chart_2);
   ChartClose(chart_3);

}

but below dont fine as an Indi:

#property indicator_separate_window
#property indicator_buffers 3
#property indicator_plots   3

void OnInit()
{
   
   long chart_2=ChartOpen("AUDUSD",0);
   long chart_3=ChartOpen("EURUSD",0);  
   
   Print(chart_2," ",chart_3);
   ChartClose(chart_2);
   ChartClose(chart_3);

}

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[]
                 )
{ 
   return(rates_total);
}

[onewithzachy]

song_song:

This one work fine as EA:

but below dont fine as an Indi:

Hi song_song,

ChartOpen() and ChartClose() function is part of chart operation. Please click this online doc https://www.mql5.com/en/docs/chart_operations. According to that, "All chart operations are allowed in Expert Advisors and scripts only.". So it's not a bug.

 

[Jinsong Zhang]

onewithzachy:

Hi song_song,

ChartOpen() and ChartClose() function is part of chart operation. Please click this online doc https://www.mql5.com/en/docs/chart_operations. According to that, "All chart operations are allowed in Expert Advisors and scripts only.". So it's not a bug.

 

well, thanks onewithzachy

[Jinsong Zhang]

my suggestion for mql5 guide:

list of  function availability

function	availability
	EA	Indi	Script
ChartOpen()	V	X	V
ChartClose()	V	X	V
...	...	...	...

[onewithzachy]

song_song:

my suggestion for mql5 guide:

list of  function availability

function	availability
	EA	Indi	Script
ChartOpen()	V	X	V
ChartClose()	V	X	V
...	...	...	...

Hi song_song,

Mmm ... I don't understand :(.

 

[Jinsong Zhang]

onewithzachy:

Hi song_song,

Mmm ... I don't understand :(.

 

function	availability
	EA	Indicator	Script
…	…	…	…
OnStart()	No	No	Yes
OnCalculate()	No	Yes	No
OnTick()	Yes	No	No
…	…	…	…
ChartOpen()	Yes	No	Yes
ChartClose()	Yes	No	Yes
…	…	…	…