Create your own MetaTrader extension (dll) - page 11
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receiving stock price
Hello,
I'm trying to receive stock prices from meta trader with c#, but don't really know how to do it.
can someone explain to me or send me into a specific guide?
thanks a lot.
Hello,
I'm trying to receive stock prices from meta trader with c#, but don't really know how to do it.
can someone explain to me or send me into a specific guide?
thanks a lot.In the experts\examples\DLLExample you will find how the prices can be passed from metatrader to C (it is close enough , so you can use that example directly for that), The rate infostructure haven't changed from the beginning and is still defined as :
{
unsigned int ctm;
double open;
double low;
double high;
double close;
double vol;
};
so you should not have any problems to pass it to C#
thanks!
where is the experts\examples\DLLExample ?
thanks! where is the experts\examples\DLLExample ?
In your metatrader folder (the folder where you installed it)
In your metatrader folder (the folder where you installed it)
I've downloaded 2 metatraders, and in the both of them the examples were in c++. I think I could understand from this although I'm programming with c#, but I couldn't find what I need, how to get the stock prices.
I've downloaded 2 metatraders, and in the both of them the examples were in c++. I think I could understand from this although I'm programming with c#, but I couldn't find what I need, how to get the stock prices.
You are passing the prices from and indicator or an EAs to your DLL extension
You have a complete example (MQL part as well as C part) at that folder how it is done. Once you receive data from mql part in C# part ity is only a matter of code what are you going ot do with it
You are passing the prices from and indicator or an EAs to your DLL extension You have a complete example (MQL part as well as C part) at that folder how it is done. Once you receive data from mql part in C# part ity is only a matter of code what are you going ot do with it
I didn't find example in MQL or C, just in C++. Anyway, there were a lot of functions and I couldn't understand which one is the function that I need for getting the price. do you have such an example?
thanks very much.
I didn't find example in MQL or C, just in C++. Anyway, there were a lot of functions and I couldn't understand which one is the function that I need for getting the price. do you have such an example? thanks very much.
From C side (see the comment) :
//| |
//+------------------------------------------------------------------+
MT4_EXPFUNC double __stdcall GetRatesItemValue(const RateInfo* rates,const int rates_total,const int shift,const int nrate)
{
//---
if(rates==NULL)
{
printf("GetRatesItemValue: NULL array\n");
return(0.0);
}
//---
if(rates_total<0)
{
printf("GetRatesItemValue: wrong rates_total number (%d)\n", rates_total);
return(0.0);
}
//---
if(shift=rates_total)
{
printf("GetRatesItemValue: wrong shift number (%d)\n", shift);
return(0.0);
}
//---
if(nrate5)
{
printf("GetRatesItemValue: wrong rate index (%d)\n", nrate);
return(0.0);
}
//
// here you are having prices, time and volume
//
int nitem=rates_total-1-shift;
switch(nrate)
{
case 0: return double(rates[nitem].ctm);
case 1: return rates[nitem].open;
case 2: return rates[nitem].low;
case 3: return rates[nitem].high;
case 4: return rates[nitem].close;
case 5: return rates[nitem].vol;
}
//---
return(0.0);
}
From C side (see the comment) :
//| |
//+------------------------------------------------------------------+
MT4_EXPFUNC double __stdcall GetRatesItemValue(const RateInfo* rates,const int rates_total,const int shift,const int nrate)
{
//---
if(rates==NULL)
{
printf("GetRatesItemValue: NULL array\n");
return(0.0);
}
//---
if(rates_total<0)
{
printf("GetRatesItemValue: wrong rates_total number (%d)\n", rates_total);
return(0.0);
}
//---
if(shift=rates_total)
{
printf("GetRatesItemValue: wrong shift number (%d)\n", shift);
return(0.0);
}
//---
if(nrate5)
{
printf("GetRatesItemValue: wrong rate index (%d)\n", nrate);
return(0.0);
}
//
// here you are having prices, time and volume
//
int nitem=rates_total-1-shift;
switch(nrate)
{
case 0: return double(rates[nitem].ctm);
case 1: return rates[nitem].open;
case 2: return rates[nitem].low;
case 3: return rates[nitem].high;
case 4: return rates[nitem].close;
case 5: return rates[nitem].vol;
}
//---
return(0.0);
}
thanks!
do you have something in C#? because it doesn't really say something to me.
thanks! do you have something in C#? because it doesn't really say something to me.
kfirmt
Excuse me for asking, but did you actually ever code in C/C++/C#?
It does not get simpler than the example from that post