forked from rosh/MQL5Book
53 lines
1.9 KiB
MQL5
53 lines
1.9 KiB
MQL5
//+------------------------------------------------------------------+
| |
//| UseWPR3.mq5 |
| |
//| Copyright 2021, MetaQuotes Ltd. |
| |
//| https://www.mql5.com |
| |
//+------------------------------------------------------------------+
| |
#property indicator_separate_window
| |
#property indicator_buffers 1
| |
#property indicator_plots 1
| |
| |
// drawing settings
| |
#property indicator_type1 DRAW_LINE
| |
#property indicator_color1 clrBlue
| |
#property indicator_width1 1
| |
#property indicator_label1 "WPR"
| |
| |
input int WPRPeriod = 14;
| |
| |
// indicator buffer
| |
double WPRBuffer[];
| |
| |
// global variable for subordinate indicator
| |
int handle;
| |
| |
//+------------------------------------------------------------------+
| |
//| Custom indicator initialization function |
| |
//+------------------------------------------------------------------+
| |
int OnInit()
| |
{
| |
SetIndexBuffer(0, WPRBuffer);
| |
handle = iCustom(_Symbol, _Period, "IndWPR", WPRPeriod);
| |
return handle == INVALID_HANDLE ? INIT_FAILED : INIT_SUCCEEDED;
| |
}
| |
| |
//+------------------------------------------------------------------+
| |
//| Custom indicator iteration function |
| |
//+------------------------------------------------------------------+
| |
int OnCalculate(const int rates_total,
| |
const int prev_calculated,
| |
const int begin,
| |
const double &data[])
| |
{
| |
// wait until the subindicator is calculated for all bars
| |
if(BarsCalculated(handle) != rates_total)
| |
{
| |
return prev_calculated;
| |
}
| |
| |
// copy data from subordinate indicator into our buffer
| |
const int n = CopyBuffer(handle, 0, 0, rates_total - prev_calculated + 1, WPRBuffer);
| |
| |
return n > -1 ? rates_total : 0;
| |
}
| |
//+------------------------------------------------------------------+
|