Implemented function ChartNavigate (MT5)

MtApi5/Mt5Enums.cs

@@ -117,6 +117,12 @@ namespace MtApi5
         CHART_SCRIPT_NAME   = 114
     }
 
+    public enum ENUM_CHART_POSITION
+    {
+        CHART_BEGIN         = 0, // Chart beginning (the oldest prices)
+        CHART_CURRENT_POS   = 1, // Current position
+        CHART_END           = 2  // Chart end (the latest prices)
+    }
 
     #endregion
 

MtApi5/MtApi5Client.cs

@@ -1791,9 +1791,9 @@ namespace MtApi5
         ///<returns>
         ///Returns true if successful, otherwise returns false.
         ///</returns>
-        public bool ChartNavigate(long chartId, int position, int shift = 0)
+        public bool ChartNavigate(long chartId, ENUM_CHART_POSITION position, int shift = 0)
         {
-            var commandParameters = new ArrayList { chartId, position, shift };
+            var commandParameters = new ArrayList { chartId, (int)position, shift };
             return SendCommand<bool>(Mt5CommandType.ChartNavigate, commandParameters);
         }
 

mq5/MtApi5.mq5

@@ -774,6 +774,9 @@ int executeCommand()
    case 252: //ChartGetString
       Execute_ChartGetString();
    break;
+   case 253: //ChartNavigate
+      Execute_ChartNavigate();
+   break;
    default:
       Print("Unknown command type = ", commandType);
       sendVoidResponse(ExpertHandle, _response_error);
@@ -812,6 +815,7 @@ int executeCommand()
 #define SEND_ULONG_RESPONSE(response) SEND_RESPONSE_OR_PRINT_ERROR(sendULongResponse, response, __FUNCTION__)
 #define SEND_BOOL_RESPONSE(response) SEND_RESPONSE_OR_PRINT_ERROR(sendBooleanResponse, response, __FUNCTION__)
 #define SEND_DOUBLE_RESPONSE(response) SEND_RESPONSE_OR_PRINT_ERROR(sendDoubleResponse, response, __FUNCTION__)
+#define SEND_STRING_RESPONSE(response) SEND_RESPONSE_OR_PRINT_ERROR(sendStringResponse, response, __FUNCTION__)
 
 //-------------------------------------------------------------
 
@@ -5845,6 +5849,52 @@ void Execute_ChartGetInteger()
    SEND_LONG_RESPONSE(result)
 }
 
+void Execute_ChartGetString()
+{
+   long chart_id;
+   int prop_id;
+   
+   GET_LONG_VALUE(0, chart_id, "chart_id")
+   GET_INT_VALUE(1, prop_id, "prop_id")
+   
+#ifdef __DEBUG_LOG__
+   PrintFormat("%s: chart_id = %d, prop_id = %d", __FUNCTION__, chart_id, prop_id);
+#endif
+   
+   string result = ChartGetString(chart_id, (ENUM_CHART_PROPERTY_STRING)prop_id);
+   
+#ifdef __DEBUG_LOG__
+   PrintFormat("%s: result = %s", __FUNCTION__, result);
+#endif
+   
+   SEND_STRING_RESPONSE(result)
+   
+   ChartRedraw(chart_id);
+}
+
+void Execute_ChartNavigate()
+{
+   long chart_id;
+   int position;
+   int shift;
+   
+   GET_LONG_VALUE(0, chart_id, "chart_id")
+   GET_INT_VALUE(1, position, "position")
+   GET_INT_VALUE(2, shift, "shift")
+   
+#ifdef __DEBUG_LOG__
+   PrintFormat("%s: chart_id = %d, position = %d, shift = %d", __FUNCTION__, chart_id, position, shift);
+#endif
+
+   bool result = ChartNavigate(chart_id, (ENUM_CHART_POSITION)position, shift);
+   
+#ifdef __DEBUG_LOG__
+   PrintFormat("%s: result = %s", __FUNCTION__, BoolToString(result));
+#endif
+
+   SEND_BOOL_RESPONSE(result)
+}
+
 void Execute_ChartApplyTemplate()
 {
    long ChartId;
@@ -5923,31 +5973,6 @@ void Execute_ChartWindowFind()
    SEND_INT_RESPONSE(result)
 }
 
-void Execute_ChartGetString()
-{
-   long ChartId;
-   int PropId;
-   
-   if (!getLongValue(ExpertHandle, 0, ChartId, _error))
-   {
-      PrintParamError("ChartGetString", "ChartId", _error);
-      sendErrorResponse(ExpertHandle, -1, _error, _response_error);
-      return;
-   }   
-   if (!getIntValue(ExpertHandle, 1, PropId, _error))
-   {
-      PrintParamError("ChartGetString", "PropId", _error);
-      sendErrorResponse(ExpertHandle, -1, _error, _response_error);
-      return;
-   }   
-   
-   if (!sendStringResponse(ExpertHandle, ChartGetString(ChartId, (ENUM_CHART_PROPERTY_STRING)PropId), _response_error))
-   {
-      PrintResponseError("ChartGetString", _response_error);
-   }
-   ChartRedraw(ChartId);
-}
-
 void Execute_TerminalInfoString()
 {
    int propertyId;