Is it possible to run the built-in alert window within NinjaScript?

[fx.practic]

Hello.

Is there any way to run built-in NT alert dialogue window from within NinjaScript code?

Thank You.

[fx.practic]

While waiting for answer I decided to make some experiments with standard WPF System.Windows.MessageBox Class

This code:

if(  CurrentBar == First_Realtime_Bar_Number +3 && State == State.Realtime )
{
     MessageBoxResult result = MessageBox.Show( "Some text", "Caption Text" );    
}

causing freezing of Simulated Data Feed and produced error message:

Failed to call 'Add' method: System.Threading.LockRecursionException: Write lock may not be acquired with read lock held. This pattern is prone to deadlocks. Please ensure that read locks are released before taking a write lock. If an upgrade is necessary, use an upgrade lock in place of the read lock. at System.Threading.ReaderWriterLockSlim.TryEnterWrit eLockCore(TimeoutTracker timeout) at System.Threading.ReaderWriterLockSlim.TryEnterWrit eLock(TimeoutTracker timeout) at NinjaTrader.Data.BarsSeries.Add(Bars bars, Double open, Double high, Double low, Double close, DateTime time, Int64 volume, Double tickSize, Boolean isBar, Double bid, Double ask)

Here is video of how it happened: https://www.screencast.com/t/prnd6OGvIk5

The code below work without errors and freezing, but message window some times appears under chart window:

if(  CurrentBar == First_Realtime_Bar_Number +3 && State == State.Realtime )
{
    new Thread(() =>
    {
        MessageBoxResult result = MessageBox.Show( "Some text", "Caption Text" );    
    }).Start();
}

and this works correct at first sight:

            if(  CurrentBar == First_Realtime_Bar_Number +3 && State == State.Realtime )
            {
                ChartControl.Dispatcher.InvokeAsync(new Action(() => 
                { 
                    MessageBoxResult result = MessageBox.Show( "Some text", "Caption Text" );                
                }));    
            }

Any other special recommendations and restrictions?

[fx.practic]

Also, found on forum mentions about these classes:

NTMessageBox
NTMessageBoxSimple

Are there any recommendations of proper use?

found this, looks working:
https://ninjatrader.com/support/foru...box-in-a-class
https://ninjatrader.com/support/forum/forum/historical-beta-archive/version-8-beta/86030-how-do-we-get-a-messagebox-that-supports-skins

Thank you.

[NinjaTrader_AlanP]

Hello

Thank you for your note.

There would be no supported method to call the alert dialogue window from NinjaScript, however it may be possible.

You could create a alert with NinjaScript, not requiring a popup,

https://ninjatrader.com/support/helpGuides/nt8/en-us/?alert.htm

The error you've posted looks related to the AddBar method. If you strip all logic from your indicator aside from the message box, are you able to replicate the issue?

https://ninjatrader.com/support/helpGuides/nt8/en-us/?addbar.htm

I look forward to your reply.

[fx.practic]

Hello, Chelsea.

Thank You for answer.
Error was caused by code above it.
But, when I run it in separate thread, it works normal.


I have 2 questions about NTMessageBoxSimple:

1. Can I run it in non-modal mode (but always on top) form indicator without blocking user interface?
2. Can I increase it's height? I haver big message and need to fit window to message size.

Thank You.



--- UPD 1:
I tried to create instance to manipulate with properties:

NinjaTrader.Gui.Tools.NTMessageBoxSimple test = new NinjaTrader.Gui.Tools.NTMessageBoxSimple(); 

but: 'NinjaTrader.Gui.Tools.NTMessageBoxSimple.NTMessag eBoxSimple()' is inaccessible due to its protection level[/QUOTE]



--- UPD 2:
ChartControl.Dispatcher.BeginInvoke() still block UI thread with both WPF MessageBox and NTMessageBoxSimple



--- UPD 3:
This crushes NT with guarantee:

new Thread(() =>
{
MessageBox.Show( Window.GetWindow(ChartControl.OwnerChart as DependencyObject),  "Some text", "Caption Text" );    

}).Start(); 

--- UPD 4:
This (MessageBoxOptions.ServiceNotification) work almost fine, but show window in the centre of main monitor - not above parent chart:

new Thread(() =>
{                            

    MessageBox.Show(
        msg_content,
        window_caption,
        MessageBoxButton.OK,
        MessageBoxImage.Information,
        MessageBoxResult.OK,
        MessageBoxOptions.ServiceNotification
        );                                              
}).Start(); 

[NinjaTrader_AlanP]

Hello fx.practic,

There is no supported method to specify the location of the Messagebox, however it may be possible.

I will submit a feature request for this.

Please let us know if you need further assistance.

[fx.practic]

Thank You, Alan.

[ttodua]

fx.practic
have you found a way to implement NT message box programatically, instead of Windows MessageBox ?


___
update:
found on your link.