update

Utils/ChartUtils.mqh

@@ -0,0 +1,31 @@
+#include <Object.mqh>
+
+class ChartUtils : public CObject {
+
+public:
+   void draw_line(double value, string name, color clr = clrBlack);
+};
+
+void ChartUtils::draw_line(double value, string name, color clr) {
+   if (ObjectFind(0, name) < 0) {
+      ResetLastError();
+
+      if (!ObjectCreate(0, name, OBJ_HLINE, 0, 0, value)) {
+         Print(__FUNCTION__, ": failed to create a horizontal line! Error code = ", GetLastError());
+         return;
+      }
+
+      ObjectSetInteger(0, name, OBJPROP_COLOR, clr);
+      ObjectSetInteger(0, name, OBJPROP_STYLE, STYLE_SOLID);
+      ObjectSetInteger(0, name, OBJPROP_WIDTH, 1);
+   }
+
+   ResetLastError();
+
+   if (!ObjectMove(0, name, 0, 0, value)) {
+      Print(__FUNCTION__, ": failed to move the horizontal line! Error code = ", GetLastError());
+      return;
+   }
+
+   ChartRedraw();
+}