Chart Properties

Identifiers of ENUM_CHART_PROPERTY enumerations are used as parameters of functions for working with charts. The abbreviation of r/o in the “Property Type” column means that this property is read-only and cannot be changed. The w/o abbreviation in the “Property Type” column means that this property is write-only and it cannot be received. When accessing certain properties, it’s necessary to specify an additional parameter-modifier (modifier), which serves to indicate the number of chart subwindows. 0 means the main window.

The functions defining the chart properties are actually used for sending change commands to the chart. If these functions are executed successfully, the command is included in the common queue of the chart events. The changes are implemented to the chart when handling the queue of the chart events.

Thus, do not expect an immediate visual update of the chart after calling these functions. Generally, the chart is updated automatically by the terminal following the change events - a new quote arrival, resizing the chart window, etc. Use ChartRedraw() function to forcefully update the chart.

For functions ChartSetInteger() and ChartGetInteger()

ENUM_CHART_PROPERTY_INTEGER

For functions ChartSetDouble() and ChartGetDouble()

ENUM_CHART_PROPERTY_DOUBLE

For functions ChartSetString() and ChartGetString()

ENUM_CHART_PROPERTY_STRING

Example:

int chartMode=ChartGetInteger(0,CHART_MODE);
   switch(chartMode)
     {
      case(CHART_BARS):    Print("CHART_BARS");   break;
      case(CHART_CANDLES): Print("CHART_CANDLES");break;
      default:Print("CHART_LINE");
     }
   bool shifted=ChartGetInteger(0,CHART_SHIFT);
   if(shifted) Print("CHART_SHIFT = true");
   else Print("CHART_SHIFT = false");
   bool autoscroll=ChartGetInteger(0,CHART_AUTOSCROLL);
   if(autoscroll) Print("CHART_AUTOSCROLL = true");
   else Print("CHART_AUTOSCROLL = false");
   int chartHandle=ChartGetInteger(0,CHART_WINDOW_HANDLE);
   Print("CHART_WINDOW_HANDLE = ",chartHandle);
   int windows=ChartGetInteger(0,CHART_WINDOWS_TOTAL);
   Print("CHART_WINDOWS_TOTAL = ",windows);
   if(windows>1)
     {
      for(int i=0;i<windows;i++)
        {
         int height=ChartGetInteger(0,CHART_HEIGHT_IN_PIXELS,i);
         double priceMin=ChartGetDouble(0,CHART_PRICE_MIN,i);
         double priceMax=ChartGetDouble(0,CHART_PRICE_MAX,i);
         Print(i+": CHART_HEIGHT_IN_PIXELS = ",height," pixels");
         Print(i+": CHART_PRICE_MIN = ",priceMin);
         Print(i+": CHART_PRICE_MAX = ",priceMax);
        }
     }

See also

Examples of Working with the Chart