//+------------------------------------------------------------------+ //| DRAW_ARROW.mq5 | //| Copyright 2011, MetaQuotes Software Corp. | //| https://www.mql5.com | //+------------------------------------------------------------------+ #property copyright "Copyright 2011, MetaQuotes Software Corp." #property link "https://www.mql5.com" #property version "1.00" #property description "An indicator to demonstrate DRAW_ARROW" #property description "Draws arrows set by Unicode characters, on a chart" #property description "The color, size, shift and symbol code of the arrow are changed in a random way" #property description "after every N ticks" #property description "The code parameter sets the base value: code=159 (a circle)" #property indicator_chart_window #property indicator_buffers 1 #property indicator_plots 1 //--- plot Arrows #property indicator_label1 "Arrows" #property indicator_type1 DRAW_ARROW #property indicator_color1 clrGreen #property indicator_width1 1 //--- input parameters input int N=5; // Number of ticks to change input ushort code=169; // Symbol code to draw in DRAW_ARROW //--- An indicator buffer for the plot double ArrowsBuffer[]; int PivotPointBuffer[]; //--- An array to store colors color colors[]={clrRed,clrBlue,clrGreen}; int high_handle; int low_handle; input int length = 5; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int OnInit() { //--- indicator buffers mapping SetIndexBuffer(0,ArrowsBuffer,INDICATOR_DATA); SetIndexBuffer(0,PivotPointBuffer,INDICATOR_CALCULATIONS); //--- Define the symbol code for drawing in PLOT_ARROW PlotIndexSetInteger(0,PLOT_ARROW,code); //--- Set the vertical shift of arrows in pixels PlotIndexSetInteger(0,PLOT_ARROW_SHIFT, 0); //--- Set as an empty value 0 PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,0); PlotIndexSetInteger(0,PLOT_LINE_WIDTH, 3); //--- return(INIT_SUCCEEDED); } //+------------------------------------------------------------------+ //| Custom indicator iteration function | //+------------------------------------------------------------------+ int OnCalculate(const int rates_total, const int prev_calculated, const datetime &time[], const double &open[], const double &high[], const double &low[], const double &close[], const long &tick_volume[], const long &volume[], const int &spread[]) { for(int i=1;i