MtApi5: expose SymbolInfoMarginRate

MtApi5/MtApi5Client.cs

@@ -1701,6 +1701,32 @@ public bool SymbolInfoSessionTrade(string name, ENUM_DAY_OF_WEEK dayOfWeek, uint
             return false;
         }
 
+        ///<summary>
+        ///Returns the margin rates depending on the order type and direction.
+        ///</summary>
+        ///<param name="symbolName">Symbol name.</param>
+        ///<param name="orderType">Order type.</param>
+        ///<param name="initialMarginRate">A variable, to which the initial margin rate value will be written.</param>
+        ///<param name="maintenanceMarginRate">A variable, to which the maintenance margin rate value will be written.</param>
+        public bool SymbolInfoMarginRate(string symbolName, ENUM_ORDER_TYPE orderType, out double initialMarginRate, out double maintenanceMarginRate)
+        {
+            Dictionary<string, object> cmdParams = new() { { "Symbol", symbolName ?? string.Empty }, { "OrderType", orderType } };
+
+            var response = SendCommand<FuncResult<Dictionary<string, double>>>(ExecutorHandle,
+                Mt5CommandType.SymbolInfoMarginRate, cmdParams);
+            if (response != null && response.Result != null
+                && response.Result.TryGetValue("Initial", out double initial)
+                && response.Result.TryGetValue("Maintenance", out double maintenance))
+            {
+                initialMarginRate = initial;
+                maintenanceMarginRate = maintenance;
+                return response.RetVal;
+            }
+            initialMarginRate = 0;
+            maintenanceMarginRate = 0;
+            return false;
+        }
+
         ///<summary>
         ///Provides opening of Depth of Market for a selected symbol, and subscribes for receiving notifications of the DOM changes.
         ///</summary>

MtApi5/MtProtocol/Mt5CommandType.cs

@@ -260,6 +260,8 @@ internal enum Mt5CommandType
         OrderCheck = 303,
         Buy = 304,
         Sell = 305,
-        GetSymbols = 306
+        GetSymbols = 306,
+
+        SymbolInfoMarginRate = 380
     }
 }

TestClients/MtApi5TestClient/MainWindow.xaml

@@ -499,6 +499,7 @@
                             <Button Command="{Binding SymbolInfoTickCommand}" Content="SymbolInfoTick" Margin="2"/>
                             <Button Command="{Binding SymbolInfoSessionQuoteCommand}" Content="SymbolInfoSessionQuote" Margin="2"/>
                             <Button Command="{Binding SymbolInfoSessionTradeCommand}" Content="SymbolInfoSessionTrade" Margin="2"/>
+                            <Button Command="{Binding SymbolInfoMarginRateCommand}" Content="SymbolInfoMarginRate" Margin="2"/>
                             <Button Command="{Binding MarketBookAddCommand}" Content="MarketBookAdd" Margin="2"/>
                             <Button Command="{Binding MarketBookReleaseCommand}" Content="MarketBookRelease" Margin="2"/>
                             <Button Command="{Binding MarketBookGetCommand}" Content="MarketBookGet" Margin="2"/>

TestClients/MtApi5TestClient/ViewModel.cs

@@ -95,6 +95,7 @@ public class ViewModel : INotifyPropertyChanged
         public DelegateCommand SymbolInfoTickCommand { get; private set; }
         public DelegateCommand SymbolInfoSessionQuoteCommand { get; private set; }
         public DelegateCommand SymbolInfoSessionTradeCommand { get; private set; }
+        public DelegateCommand SymbolInfoMarginRateCommand { get; private set; }
         public DelegateCommand MarketBookAddCommand { get; private set; }
         public DelegateCommand MarketBookReleaseCommand { get; private set; }
         public DelegateCommand MarketBookGetCommand { get; private set; }
@@ -441,6 +442,7 @@ private void InitCommands()
             SymbolInfoTickCommand = new DelegateCommand(ExecuteSymbolInfoTick);
             SymbolInfoSessionQuoteCommand = new DelegateCommand(ExecuteSymbolInfoSessionQuote);
             SymbolInfoSessionTradeCommand = new DelegateCommand(ExecuteSymbolInfoSessionTrade);
+            SymbolInfoMarginRateCommand = new DelegateCommand(ExecuteSymbolInfoMarginRate);
             MarketBookAddCommand = new DelegateCommand(ExecuteMarketBookAdd);   
             MarketBookReleaseCommand = new DelegateCommand(ExecuteMarketBookRelease);
             MarketBookGetCommand = new DelegateCommand(ExecuteMarketBookGet);
@@ -1217,6 +1219,24 @@ private async void ExecuteSymbolInfoSessionTrade(object o)
             AddLog("SymbolInfoSessionTrade(EURUSD): result = " + retVal);
         }
 
+        private async void ExecuteSymbolInfoMarginRate(object o)
+        {
+            var retVal = await Execute(() =>
+            {
+                double initialMarginRate;
+                double maintenanceMarginRate;
+                var ok = _mtApiClient.SymbolInfoMarginRate("EURUSD", ENUM_ORDER_TYPE.ORDER_TYPE_BUY, out initialMarginRate, out maintenanceMarginRate);
+                if (ok)
+                {
+                    AddLog($"SymbolInfoMarginRate(EURUSD) initial = {initialMarginRate}");
+                    AddLog($"SymbolInfoMarginRate(EURUSD) maintenance = {maintenanceMarginRate}");
+                }
+                return ok;
+            });
+
+            AddLog($"SymbolInfoMarginRate(EURUSD): result = {retVal}");
+        }
+
         private async void ExecuteMarketBookAdd(object o)
         {
             var retVal = await Execute(() => _mtApiClient.MarketBookAdd("EURUSD"));

mq5/MtApi5.mq5

@@ -381,6 +381,7 @@ int preinit()
    ADD_EXECUTOR(304, Buy);
    ADD_EXECUTOR(305, Sell);
    ADD_EXECUTOR(306, GetSymbols);
+   ADD_EXECUTOR(380, SymbolInfoMarginRate);
 
    return (0);
 }
@@ -1647,6 +1648,26 @@ string Execute_SymbolInfoSessionTrade()
    return CreateSuccessResponse(result_value_jo);
 }
 
+string Execute_SymbolInfoMarginRate()
+{
+   GET_JSON_PAYLOAD(jo);
+   GET_STRING_JSON_VALUE(jo, "Symbol", symbol);
+   GET_INT_JSON_VALUE(jo, "OrderType", order_type);
+
+   double initial_margin_rate = 0.0;
+   double maintenance_margin_rate = 0.0;
+   bool ok = SymbolInfoMarginRate(symbol, (ENUM_ORDER_TYPE)order_type, initial_margin_rate, maintenance_margin_rate);
+
+   JSONObject* result_value_jo = new JSONObject();
+   result_value_jo.put("RetVal", new JSONBool(ok));
+   JSONObject* info_jo = new JSONObject();
+   info_jo.put("Initial", new JSONNumber(initial_margin_rate));
+   info_jo.put("Maintenance", new JSONNumber(maintenance_margin_rate));
+   result_value_jo.put("Result", info_jo);
+
+   return CreateSuccessResponse(result_value_jo);
+}
+
 string Execute_MarketBookAdd()
 {
    GET_JSON_PAYLOAD(jo);