ForceRefresh, Update, candlestick selected...

[Mark--]

Hello,

I am creating a new indicator; most is going well except for two issues.

The indicator will be used while the market is opened and for review after the market is closed.

The user clicks on areas of the chart while pressing a configurable key and the indicator draws objects on the chart via flags set in the mouse click handler and drawn in the next OnBarUpdate.

#1

When the market is closed, I cannot get the OnBarUpdate to fire after the initial loading of the data. ForceRefresh and Update calls do not force a OnBarUpdate call.

#2

When the user clicks on a candlestick (which is OK) and is pressing a valid key the candlestick series (all the candlestick) is selected. I tried setting e.handled to true in the mouse click event handler, no joy.

I am not sure which is called first, my indicator mouse click handler or the logic to select the candlesticks.

Ideas?

Thanks,

Mark

[QuantKey_Bruce]

Use a timer to trigger a custom event at an interval - try following this example: https://ninjatrader.com/support/help...ustomevent.htm

[Mark--]

Use a timer to trigger a custom event at an interval - try following this example: https://ninjatrader.com/support/help...ustomevent.htm

Thanks for the response.

I tried wrapping the ForceRefesh and Update in a TiggerCustomEvent in the MouseClick handler with no joy. Perhaps I will try a timer.

[QuantKey_Bruce]

Remember, you don't want to "force an OnBarUpdate call" - you want to redraw the screen when your special situation happens. Maybe NinjaTrader support can comment on if there is any reason that a timer -> TriggerCustomEvent() -> do some things -> ForceRefresh() might be insufficient to get the screen to redraw with the changes during closed market hours. NinjaTrader_ChelseaB will likely know what is possible here.

[Mark--]

Thanks for the response.

Are you asserting adding/modifying drawing objects outside of OnBarUpdate will be reflected in the window without OnBarUpdate being called?

[QuantKey_Bruce]

Yes, they would be if you ForceRefresh, and possibly even if you do not because they would be automatically invalidated.

[Mark--]

Thanks for the help Bruce.

After a time, trying different solutions, I was able to modify and move the objects without OnBarUpdate
ForceRefersh was required. OnBarUpdate was not called.

Now to issue two of the initial message post.
.

[QuantKey_Bruce]

It sounds like you want to make it so the user is unable to select the chart series with their mouse. If you were able to successfully do that, how would they then select the series to move it up or down in the ZOrder or otherwise manipulate the data series? That's a functionality people expect in NinjaTrader...

[QuantKey_Bruce]

One approach you could use would be to use plots to draw on top of the candlesticks so that when they try to click on the candles, it's always clicking on your indicator because the indicator is on top, but that seems kind of clumsy. (You could make the actual plots not show up by overriding OnRender or making them transparent etc.) Maybe someone else has an idea on this.

[Mark--]

It sounds like you want to make it so the user is unable to select the chart series with their mouse.

If one of the indicator configured keys is not down (pressed) I ignore mouse clicks and do nothing.

[Mark--]

If one of the indicator configured keys is not down (pressed) I ignore mouse clicks and do nothing.

Found a solution.

if (ChartBars.IsSelected)
 ChartBars.IsSelected = false;​

[QuantKey_Bruce]

Great. Sounds like it will all work out.

[NinjaTrader_BrandonH]

Hello Mark~~,

Thanks for your post.

I am happy to hear you found a solution. The ChartBars class provides GUI access related methods and properties to the primary bars series configured on the Chart through the Data Series menu.

Note that ChartBars.IsSelected is not a documented property and it would be up to your discretion to use this in a script.

ChartBars: https://ninjatrader.com/support/help.../chartbars.htm

[Mark--]

Note that ChartBars.IsSelected is not a documented/supported property and it would be up to your discretion to use this in a script

OK, do you have another solution?

[NinjaTrader_BrandonH]

Hello Mark~~,

Thanks for your note.

There is an option available for allowing the chart bars to be selected or not in the chart's properties menu.

You could use ChartControl.Properties.AllowSelectionDragging = false; to prevent the chart bars from being selectable.

Please let me know if I may assist further.