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#property copyright "Copyright © 2025"
#property version "1.00"
#property strict
#property indicator_chart_window
//--- Input parameters
extern string Separator1 = "=== Opening Range Settings ==="
extern int OR_StartHour = 9 // Hour when OR starts (0-23)
extern int OR_StartMinute = 30 // Minute when OR starts (0-59)
extern int OR_DurationMinutes = 30 // Length of OR in minutes (e.g. 15, 30, 60, 120)
extern color OR_HighColor = clrLime
extern color OR_LowColor = clrYellow
extern int OR_LineStyle = STYLE_DOT
extern int OR_LineWidth = 1
extern bool ShowComment = true
//--- Global variables
string prefix = "FlexOR_"
datetime last_day_checked = 0
double or_high = 0
double or_low = 0
bool or_complete = false
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int OnInit()
{
ObjectDelete(0, prefix+"High")
ObjectDelete(0, prefix+"Low")
last_day_checked = 0
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[])
{
datetime current_day = TimeCurrent() - (TimeCurrent() % 86400) // Midnight of today
// New day? Reset and recalculate
if(current_day != last_day_checked)
{
last_day_checked = current_day
CalculateOpeningRange()
}
// Draw or update lines
if(or_complete)
{
DrawLine(prefix+"High", or_high, OR_HighColor)
DrawLine(prefix+"Low", or_low, OR_LowColor)
}
// Optional comment
if(ShowComment)
{
string status = or_complete ? "Complete" : "In Progress"
Comment("Opening Range ", OR_StartHour, ":",
StringFormat("%02d", OR_StartMinute), " +", OR_DurationMinutes, "min\n",
"Status: ", status, "\n",
"High: ", DoubleToStr(or_high, _Digits),
" Low: ", DoubleToStr(or_low, _Digits))
}
else
Comment("")
return(rates_total)
}
//+------------------------------------------------------------------+
//| Calculate the Opening Range High/Low |
//+------------------------------------------------------------------+
void CalculateOpeningRange()
{
datetime or_start_time = TimeCurrent() - (TimeCurrent() % 86400) // Today 00:00
or_start_time += OR_StartHour * 3600 + OR_StartMinute * 60
// If OR starts tomorrow (e.g. 23:30), adjust
if(or_start_time > TimeCurrent())
or_start_time -= 86400
datetime or_end_time = or_start_time + OR_DurationMinutes * 60
// If OR hasn't started yet
if(TimeCurrent() < or_start_time)
{
or_complete = false
or_high = 0 or_low = 0
return
}
// Find the highest high and lowest low in the range
or_high = 0
or_low = 999999
int start_bar = iBarShift(NULL, 0, or_start_time, false)
int end_bar = iBarShift(NULL, 0, or_end_time, false)
// If end_bar is before start (happens when OR is in progress), use current bar
if(end_bar < 0) end_bar = 0
for(int i = start_bar i >= end_bar i--)
{
if(i < 0) break
double h = iHigh(NULL, 0, i)
double l = iLow(NULL, 0, i)
if(h > or_high) or_high = h
if(l < or_low) or_low = l
}
or_complete = (TimeCurrent() >= or_end_time)
// Safety: if no bars found (weekend?), use previous day
if(or_high <= or_low && TimeCurrent() >= or_end_time)
{
// Fallback: use previous completed day
datetime yesterday = TimeCurrent() - 86400 - (TimeCurrent() % 86400)
yesterday += OR_StartHour*3600 + OR_StartMinute*60
datetime yesterday_end = yesterday + OR_DurationMinutes*60
start_bar = iBarShift(NULL, 0, yesterday, false)
end_bar = iBarShift(NULL, 0, yesterday_end, false)
for(int i = start_bar i >= MathMax(end_bar, 0) i--)
{
double h = iHigh(NULL, 0, i)
double l = iLow(NULL, 0, i)
if(h > or_high) or_high = h
if(l < or_low) or_low = l
}
}
}
//+------------------------------------------------------------------+
//| Draw or update horizontal line |
//+------------------------------------------------------------------+
void DrawLine(string name, double price, color clr)
{
if(ObjectFind(0, name) == -1)
{
ObjectCreate(0, name, OBJ_HLINE, 0, Time[0], price)
ObjectSetInteger(0, name, OBJPROP_STYLE, OR_LineStyle)
ObjectSetInteger(0, name, OBJPROP_WIDTH, OR_LineWidth)
ObjectSetInteger(0, name, OBJPROP_COLOR, clr)
ObjectSetInteger(0, name, OBJPROP_BACK, false)
}
else
{
ObjectMove(0, name, 0, Time[0], price)
}
}
//+------------------------------------------------------------------+
|
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