SetDouble

Provides simplified access to the functions of API MQL5 ObjectSetDouble() to change double properties (of float and double types) of a graphical object bound to a class instance. There are two versions of a function call:

Setting a property value that does not require a modifier

bool  SetDouble(
   ENUM_OBJECT_PROPERTY_DOUBLE   prop_id,     // double property ID
   double                        value        // value
   )

Parameters

prop_id

[in] ID of a graphical object double property.

value

[in] New value of a changed double property.

Setting a property value indicating the modifier

bool  SetDouble(
   ENUM_OBJECT_PROPERTY_DOUBLE   prop_id,      // double property ID
   int                           modifier,     // modifier
   double                        value         // value
   )

Parameters

prop_id

[in] ID of a graphical object double property.

modifier

[in] Modifier (index) of a double property.

value

[in] New value of a changed double property.

Return Value

true - success, false - cannot change the double feature.

Example:

//--- example for CChartObject::SetDouble
#include <ChartObjects\ChartObject.mqh>
//---
void OnStart()
  {
   CChartObject object;
//---
   for(int i=0;i<object.LevelsCount();i++)
     {
      //--- set level value of chart object
      if(!object.SetDouble(OBJPROP_LEVELVALUE,i,0.1*i))
        {
         printf("Set double property error %d",GetLastError());
         return;
        }
     }
  }