QuantityUpDown: negative value

[fx.practic]

Hello.
I using QuantityUpDown control and found out, that it don't show negative value.

I overrideValueChanged() event handler.
When value is zero and down arrow pressed, ValueChanged() invokes and QS.Value == -1.

But, after that, ValueChanged() invokes once more and QS.Value become 0.

I checked QS.Minimum value - it equals to Int32.MinValue;

I tried override event handlers, that may reset value to zero, but it not helps:

QS.TouchDown +=  (o, e) =>    {};
QS.PreviewMouseDown +=  (o, e) =>    {}; 

How to let QS.Value to remain negative?

[NinjaTrader_Jesse]

Hello,

Thank you for the post.

I wanted to check, do you have a sample you can export that shows what you are currently trying in regards to the negative not being set?

Also, does this only occur with pressing the buttons or can you type a negative in?

I would need to research this further as this is a ninjatrader control to see if this has some logic that sets a minimum.

With a sample of what you are trying, I could provide that with my question to development to advance the question faster.

I look forward to being of further assistance.

[fx.practic]

Thank You for fast answer.

Here is video: https://monosnap.com/file/lamiCueGb8...n02ITzoNWETSk3
I just using mouse clicking on up \ down arrows.

Indicator in attachment.

[fx.practic]

Hello, are there any news from development?

[NinjaTrader_Jesse]

Hello,

Thank you for posting the sample that was helpful.

After further review of the QuantityUpDown control it looks like it has a nice property to allow negatives:

IsNegativeValueAllowed = true

Quantity_Selector = new NinjaTrader.Gui.Tools.QuantityUpDown
{
	IsNegativeValueAllowed = true
};

I look forward to being of further assistnace.

[fx.practic]

That is definitely work, thank You very much!!!

[fx.practic]

Once more question: how to set negative increment options here (please, look at screenshot).

I tried to set IsNegativeValueAllowed = true;, but it not helps.

[NinjaTrader_Jesse]

Hello,

Thank you for the question.

I believe you are looking for the LotSize property on the QuantitySelector:

Quantity_Selector = new NinjaTrader.Gui.Tools.QuantityUpDown
{
	IsNegativeValueAllowed = true, LotSize = 10
};

//sometime later, likely while using a dispatcher

Quantity_Selector.LotSize = 20;

This would increment by 10, or later it could be reset and increments by 20 in this example.

Additionally, If you are referring to the list you have, I would need to see a sample of what you have created there to further assist with those controls.

I look forward to being of further assistance.

[fx.practic]

Thank You, Jesse.

LotSize was helpful: I made context menu that change it.


But, I mean if can I use built-in mechanism for negative increments:

https://www.screencast.com/t/4MCnDDcI

[NinjaTrader_Jesse]

Hello,

Thank you for the reply.

If you are referring to the additional QuantitySelector you have created in the extra window, again I would need to see an example of what you are doing there as that is more than just the QuantitySelector we were talking about.

If that control in the video is specifically a QuantitySelector, you should be able to apply the same properties to it to have it use negative values or increment in a specific way.

I look forward to being of further assistance.

[fx.practic]

In attachment - indicator that add standard QuantityUpDown control on toolbar.
One only modification: IsNegativeValueAllowed = true

Is it possible to predd middle mouse button and to add negative increment values?

[NinjaTrader_Jesse]

Hello,

Thank you for the reply.

I am not certain I understand the question from what has been provided.

In the video, it looks like you are opening a new window and asking about that, but this sample does not contain any of what was show and only the quantity selector.

I see that what you have provided does work going negative, and also works while using the middle mouse wheel and also if I add C.Qud.LotSize = 10 the incrementing works.

Can you clarify what the question is surrounding the sample iQuantityUpDown_Negative_Increment.cs?

I look forward to being of further assistance.

[fx.practic]

Hello.
Please, look at screenshots.
I want to add negative increment in this table.

[NinjaTrader_Jesse]

Hello,

Thank you for clarifying that for me.

I will need to research this further to see if this would be possible. Once I have more details I will reply back here.

I look forward to being of further assistance.

[fx.practic]

Thank You.

I am understand, that QuantityUpDown control was designed exceptionally for set lot value purposes.
And still, I have to mention these:

1) user may have need to decrease lot size;
2) control is very useful for dozens other purposes.

And control is very convenient to use.

So, I am sure, negative values needed.