Forex.es

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ObjectDelete(0,"A");
ObjectCreate(0,"A",OBJ_ARROW_SELL,0,0,0);
ObjectSet("A",OBJ_ARROW_SELL,Bid);

ObjectCreate
The function creates an object with the specified name, type, and the initial coordinates in the specified chart subwindow of the specified chart. There are two variants of the function:

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bool  ObjectCreate(
   long          chart_id,      // chart ID
   string        object_name,   // object name
   ENUM_OBJECT   object_type,   // object type
   int           sub_window,    // window index
   datetime      time1,         // time of the first anchor point
   double        price1,        // price of the first anchor point
   ...
   datetime      timeN=0,       // time of the N-th anchor point
   double        priceN=0       // price of the N-th anchor point
   );

The function creates an object with the specified name, type, and the initial coordinates in the specified chart subwindow:

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bool  ObjectCreate(
   string        object_name,   // object name
   ENUM_OBJECT   object_type,   // object type
   int           sub_window,    // window index
   datetime      time1,         // time of the first anchor point
   double        price1,        // price of the first anchor point
   datetime      time2=0,       // time of the second anchor point
   double        price2=0,      // price of the second anchor point
   datetime      time3=0,       // time of the third anchor point
   double        price3=0       // price of the third anchor point
   );

Parameters

chart_id [in] Chart identifier.
object_name [in] Name of the object. The name must be unique within a chart, including its subwindows.
object_type [in] Object type. The value can be one of the values of the ENUM_OBJECT enumeration.
sub_window [in] Number of the chart subwindow. 0 means the main chart window. The specified subwindow must exist (window index must be greater or equal to 0 and less than WindowsTotal()), otherwise the function returns false.
time1 [in] The time coordinate of the first anchor point.
price1 [in] The price coordinate of the first anchor point.
time2=0 [in] The time coordinate of the second anchor point.
price2=0 [in] The price coordinate of the second anchor point.
time3=0 [in] The time coordinate of the third anchor point.
price3=0 [in] The price coordinate of the third anchor point.
timeN=0 [in] The time coordinate of the N-th anchor point.
priceN=0 [in] The price coordinate of the N-th anchor point.

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int i;
i=Bars;

name = "Dn"-i;
ObjectCreate(name, OBJ_ARROW, 0, Time[a], High[a]+20*Point); //draw an up arrow
ObjectSet(name, OBJPROP_STYLE, STYLE_SOLID);
ObjectSet(name, OBJPROP_ARROWCODE, SYMBOL_ARROWUP);
ObjectSet(name, OBJPROP_COLOR,Blue);

name2 = "Dn"+i;
ObjectCreate(name2,OBJ_ARROW, 0, Time[a], Low[a]-20*Point); //draw a dn arrow
ObjectSet(name2, OBJPROP_STYLE, STYLE_SOLID);
ObjectSet(name2, OBJPROP_ARROWCODE, SYMBOL_ARROWDOWN);
ObjectSet(name2, OBJPROP_COLOR,Red);