Can keyboard recognition on a chart be turned off from code?

[GaryAlbers]

I have a UserControl which I add to a chart. The control has text boxes. When I click in the textbox and type a character, it invokes the same symbol selection dialog/window that would happen if I was simply looking at a plain chart and typed a character.

Is there a way to turn off, via ninjascript, this keyboard trigger of the symbol changer?
Also, is there a way to turn it back on (when user leaves the textbox)?

Thanks,
Gary

[NinjaTrader_Jesse]

Hello,

Thank you for the question,

After review with product management,
Keyboard events work in a 'bubble down' fashion where subscribed listeners get events and pass it down the key event to the next subscriber (or eat and don't pass it down it if programmed to do so).

The problem in your case would be that a chartcontrols overlay instrument selector is higher up in the chain then you would have access to.

I will submit this as a feature request to be looked further into.


I look forward to being of further assistance.

[GaryAlbers]

I would like to hear any 'unsupported' solutions as well.

Gary

[koganam]

I would like to hear any 'unsupported' solutions as well.

Gary

Has your UserControl subscribed to the Keyboard event handler?

[GaryAlbers]

No, it only handles events from buttons on the UserControl.

Gary

[koganam]

No, it only handles events from buttons on the UserControl.

Gary

Somewhere in your code you must subscribe to the keyboard events. As your handler will almost certainly be loaded last, you get to handle the key events first. Here is a quick and dirty example. You will have to add some error-handling, and probably subscribe to other key events. This is for key down only.

protected override void OnStartUp()
{    
    if (ChartControl != null) ChartControl.ChartPanel.KeyDown += MyEventHandlerMethod;
}

protected override void OnTermination()
{
    if (ChartControl != null) ChartControl.ChartPanel.KeyDown -= MyEventHandlerMethod;
}    

public void MyEventHandlerMethod(object sender, KeyEventArgs e)
{
    Print("Tickety boo, I got the key press!");
}

You will also have to write the glue for the UserControl.