Hello,
I am trying to remove rectangles that I drew and for some reason I cannot remove them successfully. The following is a code snippet similar to my actual code and the output it generates. What am I doing wrong? Thank you.
Output:
rect_l.Count: 4 DrawDrawObjects.Count: 4 tag: 0
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rect_l.Count: 4 DrawDrawObjects.Count: 5 tag: 1
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@4
rect_l.Count: 4 DrawDrawObjects.Count: 6 tag: 2
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@5
I am trying to remove rectangles that I drew and for some reason I cannot remove them successfully. The following is a code snippet similar to my actual code and the output it generates. What am I doing wrong? Thank you.
Code:
public class RemoveDrawObjectTest : Indicator
{
public class RectRegion
{
public double high;
public double low;
public string tag;
}
public List<RectRegion> rect_l;
SessionIterator sessionIterator;
protected override void OnStateChange()
{
if (State == State.SetDefaults)
{
Description = @"Enter the description for your new custom Indicator here.";
Name = "RemoveDrawObjectTest";
Calculate = Calculate.OnBarClose;
IsOverlay = false;
DisplayInDataBox = true;
DrawOnPricePanel = true;
DrawHorizontalGridLines = true;
DrawVerticalGridLines = true;
PaintPriceMarkers = true;
ScaleJustification = NinjaTrader.Gui.Chart.ScaleJustification.Right;
//Disable this property if your indicator requires custom values that cumulate with each new market data event.
//See Help Guide for additional information.
IsSuspendedWhileInactive = true;
}
else if (State == State.Configure)
{
rect_l = new List<RectRegion>();
}
else if (State == State.Historical)
{
sessionIterator = new SessionIterator(Bars);
}
}
protected override void OnBarUpdate()
{
if (Bars.IsFirstBarOfSession)
sessionIterator.GetNextSession(Time[0], true);
if (CurrentBar > 5)
return;
// define some region
RectRegion reg = new RectRegion();
reg.high = GetCurrentAsk();
reg.low = reg.high - 3 * TickSize;
reg.tag = CurrentBar.ToString();
// put it in the list
rect_l.Insert(0, reg);
// Draw the region
Draw.Rectangle(this, reg.tag, Time[0], reg.low, sessionIterator.ActualSessionEnd, reg.high, true, "Default");
// remove old elements
int n = rect_l.Count;
if (n > 3)
{
RemoveDrawObject(rect_l[n - 1].tag);
Print("rect_l.Count: " + n + " DrawDrawObjects.Count: " + DrawObjects.Count + " tag: " + rect_l[n - 1].tag);
foreach (var item in DrawObjects)
Print(DrawObjects[item.Tag].Tag);
rect_l.RemoveAt(n - 1);
}
}
}
rect_l.Count: 4 DrawDrawObjects.Count: 4 tag: 0
@0
@1
@2
@3
rect_l.Count: 4 DrawDrawObjects.Count: 5 tag: 1
@0
@1
@2
@3
@4
rect_l.Count: 4 DrawDrawObjects.Count: 6 tag: 2
@0
@1
@2
@3
@4
@5
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