add support for dynamic volume calculation in ea ...

Experts/x-saherelm.xch.strategy.ea.mq5

@@ -49,9 +49,12 @@ input bool eaUseMaxAllowedTradesPerSymbol = true;                              /
 input string eaSymbols = "EURUSDb,GBPUSDb,USDJPYb,USDCHFb,XAUUSDb,DowJones30"; // Trading Symbols
 
 //
-// Trades ...
-input group "Trades";
-input double eaVolume = 0.3;            // Static Volume
+// Risk Management ...
+input group "Risk Management";
+
+//
+// Risk Management > Risk / Reward Calculation ...
+input group "Risk/Reward";
 input double eaR2R = 1.5;               // Risk to Reward Ratio for Dynamic TP SL
 input bool eaUseFixedTPSLPoints = true; // Use Fixed TP SL in Points
 input bool eaIgnoreTP = false;          // Ignore TP
@@ -60,8 +63,12 @@ input double eaTPPoint = 200;           // Static TP Point
 input double eaSLPoint = 500;           // Static SL Point
 
 //
-// Risk Management ...
-input group "Risk Management";
+// Risk Management > Volume Calculation ...
+input group "Volume";
+input bool eaUseDynamicVolume = false;           // Use Dynamic Volume
+input double eaDynamicVolumeStep = 0.01;         // Increase Volume Step
+input double eaDynamicVolumeBalanceFactor = 200; // Balance Factor for Generate Dynamic Volume
+input double eaVolume = 0.3;                     // Static Volume
 
 //
 // Risk Management > Trade Management ...
@@ -646,6 +653,30 @@ void OnSignalRecieved(
         return;
     }
 
+    //
+    // Prepare Signal Dynamic Volume
+    // if Provided ...
+    if (eaUseDynamicVolume &&
+        eaDynamicVolumeStep > 0 &&
+        eaDynamicVolumeBalanceFactor > 0)
+    {
+        //
+        double dVolume = eaTrader.GetDynamicVolume(
+            signal.symbol,
+            eaDynamicVolumeBalanceFactor,
+            eaDynamicVolumeStep //
+        );
+
+        //
+        if (dVolume > 0)
+        {
+            signal.volume = dVolume;
+        }
+
+        //
+        eaTradeHandler.UpdateSignal(signal);
+    }
+
     //
     // Since Signal Filtering done based on
     // Strategy and it's not related to Public