how to determine, in an expert advisor, if the closeby function is supported

How to determine in an expert advisor if the closeby function is supported by the broker ?

I have made a routine to close all the trades and the closeby function is called when SELLs and BUYs orders are opened.

But the closeby function is broker dependant: FXCM doesn't support closeby but Activtrades, Yes...

The method to determine if closeby is supported is to see the "new order" dialog box in the terminal

I search an automatic method.

Thanks you.

If OrderCloseBy is not allowed on the server, GetLastError() returns 3.

so a possible code is:

bool supporte_closeby;

int init()

{

supporte_closeby=true;

...

return(0);

}

int essai_maximum=4;

int start()

{ ...

int essai=0,err;

kb=... // ticket BUY to close

ks=... // ticket SELL to close

lb=... // OrderLot() BUY

ls=... // OrderLot() SELL

// Info() is the information box routine. It returns always true;

if(supporte_closeby)

{ while(Info()!=OrderCloseBy(kb,ks, Green) && essai<=essais_maximum) {err=GetLastError(); if(err==4108) break;

if(err==3) {supporte_closeby=false; break;} else {Sleep(10); essai++;}}

}

else

{ while (Info()!= OrderClose(ks, ls, NormalizeDouble(Ask,Digits), slippage, Green) && essai<=essais_maximum) {if(GetLastError()==4108) break; else {Sleep(10); essai++;}}

while (Info()!= OrderClose(kb, lb, NormalizeDouble(Bid,Digits), slippage, Green) && essai<=essais_maximum) {if(GetLastError()==4108) break; else {Sleep(10); essai++;}}

}

...

return(0);

}

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