How to use NTMessageBox in a class

[blar58]

Hi,

I want to use the NTMessageBoxSimple from outside OnRender and OnBarUpdate. I want to use it from a different custom class but I get problems with ChartControl.Dispatcher and ChartControl.OwnerChart.

How can I use the NT Message Box from an outside class ?

ChartControl.Dispatcher.InvokeAsync(new Action(() => { NinjaTrader.Gui.Tools.NTMessageBoxSimple.Show(Window.GetWindow(ChartControl.OwnerChart as DependencyObject), " You cannot Split a Split Volume Profile !", "Alert", MessageBoxButton.OK, MessageBoxImage.Hand);
}));

[NinjaTrader_PatrickH]

Hello blar58,

Thank you for your post.

When calling your class pass the ChartControl as an overload to the function. For example:

MyMethod(ChartControl cc)

Then you would call cc.Dispatcher.

Please let me know if you have any questions.

[blar58]

You are right

Thanks

[sidlercom80]

Hi, is there a way to change the text in the NTMessageBox if it has already been opened? For example, I would like to make a messagebox that closes automatically after 10 seconds and the seconds should be counted down in the messagebox. How can I access the text of the messagebox to change the seconds?

[NinjaTrader_Jesse]

Hello sidlercom80,

There would not be a way to do that with the default messagebox, you would need to create your own WPF window for that type of use case. A window could be opened and you could save a variable to that window to update it later or call methods on your custom class. You can research Opening a new WPF window and also the Dialog concept for WPF windows in external resources.

You can find an example of opening a window in the following link, you would only need the window class and how the window is opened using the random dispatcher. https://ninjatrader.com/support/foru...830#post759830

Globals.RandomDispatcher.InvokeAsync(new Action(() => new AddonShellNoTabsWindow().Show()));

This would be used when you trigger the alert or whatever invokes the messagebox. You would need to save the above window to a variable if you plan to use it in some way later to update the window:

private AddonShellNoTabsWindow myWindow;

later when you open the window
[B]myWindow = [/B]new AddonShellNoTabsWindow();
Globals.RandomDispatcher.InvokeAsync(new Action(() =>[B] myWindow[/B].Show()));

[cgvmlg]

Hi,
I've added the code in the first post to my indicator but after refreshing the chart alert pop up appears like 50 times in a row. The code is inside an if statement fired when my conditions to plot signals are met.

[NinjaTrader_Jesse]

Hello cgvmlg,

When you refresh the chart the indicator will process historical bars so if your condition is true it will generate popups for each instance. You may want to surround that with a condition checking if the state is realtime: if(State == State.Realtime)