which type is the value returned by iVolume?

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Hi 
i wrote this:

double This_Vol=iVolume(NULL,PERIOD_M1,0);

and i faced this warning: 

"possible loss of data due to type conversion."

when I checked the returned value in Comment() I find out it is integer . so why I have this  warning?
also I tried whit this : 

int This_Vol=iVolume(NULL,PERIOD_M1,0);
and I have same warning .
any help please ?
 
Reza nasimi:

any help please ?

iVolume() returns long, not int: https://docs.mql4.com/series/ivolume

 
JC:

iVolume() returns long, not int: https://docs.mql4.com/series/ivolume


thank you,
I changed it to long and problem solved.

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