Code Library / Order Management
MQL4 Trade Copier
Local trade copier using global variables.
Language: MQL4 · Category: Order Management · Tags: trade copier, MQL4, master slave, copy trading, local
Source code
// MASTER
void SendSignal(int type,double lots) {
GlobalVariableSet("SIG",type);
GlobalVariableSet("LOTS",lots);
GlobalVariableSet("TIME",TimeCurrent());
}
// SLAVE
datetime lastSig=0;
void CheckSignal() {
if(!GlobalVariableCheck("TIME")) return;
datetime t=(datetime)GlobalVariableGet("TIME");
if(t<=lastSig) return; lastSig=t;
int sig=(int)GlobalVariableGet("SIG");
double lots=GlobalVariableGet("LOTS");
if(sig==0) OrderSend(Symbol(),OP_BUY,lots,Ask,3,0,0,"Copy");
if(sig==1) OrderSend(Symbol(),OP_SELL,lots,Bid,3,0,0,"Copy");
}How to use this snippet
This is a building block, not a finished trading system. Paste it into your own MQL4 project, compile it, and test it on a demo account with your broker's real spreads before relying on it. If MetaEditor reports errors, the compilation error fixer can help.