QuantityUpDown Control

[jeronymite]

In an AddOn, using the QuantityUpDown control is very handy. Thanks!

Some questions:

• Why does the value of a QuantityUpDown control with a value of zero oscillate between values of zero and 1 when the down-arrow is clicked successively?
• In the Basic Entry window, the QuantityUpDown control defaults to various quantity increments for different instruments. How may one obtain the same functionality using a QuantityUpDown control in an AddOn?
• Setting the Instrument property of the control does not seem to have a useful effect. In fact, when set, it seems to make using the control problematic in that choosing a selectable value from the "calculator" will select that value and allow one to increment/decrement it; but once at a value of 1, it seems to prevent any further increment/decrement. If one does not set the Instrument property, any value can be selected and increment/decrement work as expected. Is this what one should expect?

Thanks.

[Protech]

Hi jeronymite

I'm trying to play also with the QuantityUpDown Control in the DOM, in that case in the limit orders that one can use in level 2 cells. I'm not able to find how to access this area. I ask you because seems you are playing with similar controls and maybe can help me to find them. Here is my question to NinjaTrader:

https://ninjatrader.com/support/forum/forum/ninjatrader-8/add-on-development/1125383-automation-id

but si out of support and maybe you or another member can help me to find this.

Thank you so much

[NinjaTrader_ChelseaB]

Hello jeronymite,

I am not able to reproduce this behavior with a test script.

Quantities should be whole numbers.. Are you wanting decimal values for the quantity?



Are finding this test attached script is reproducing the behavior on your end?

[jeronymite]

Hi Chelsea. Couldn't find a test script in your response. Nevertheless, I have seen the AddOnFramework example demonstrate the 0/1 oscillation.

Not wanting decimal numbers, just whole integers. But would like the "predefined" values based on Instrument type that happen in Basic Entry.

Thanks.

[NinjaTrader_ChelseaB]

Hello jeronymite,

Apologies for not attaching the script. Post above has been edited.

I think I am understanding the issue, the quantity should always be 1 or greater and clicking the down arrow is able to set this to 0 which would be an invalid quantity. Further, when 0 and clicking down it sets it to one.

I will submit a feature request for QuantityUpDowns to not allow a value below 1 when clicking the down arrow.

As far as setting a default value based on the instrument type, you could check the instrument type.

For example:
if (Instrument.MasterInstrument.InstrumentType == InstrumentType.Stock)
{
myQuantityUpDown.Value = 100;
}

[NinjaTrader_ChelseaB]

Hello jeronymite,

I found there is a <QuantityUpDown>.Minimum that can be set to prevent the quantity from having a value of less than 1.

For example:

myQuantityUpDown.Value = 1;
myQuantityUpDown.Minimum = 1;

[jeronymite]

Thanks, Chelsea. I appreciate you looking into this. Your observations are helpful.

What is the purpose of the Instrument property of the QuantityUpDown control? And why does the Value essentially freeze at 1 when an Instrument is set?

Thanks.

[NinjaTrader_ChelseaB]

Hello jeronymite,

I don't think the Instrument has a purpose for addon scripts and may be used for something in the core code.

I am not able to reproduce freezing.

Below is a link to a video.

https://drive.google.com/file/d/1yiv-Yhlc7sllkiSgttSjGmFNnWJsTsxD/view?usp=drivesdk