Given an API that raises events, how can I listen += to them from inside a Window?

[Guy--L]

I can listen to the API events using a busy loop in a non-gui app with handlers using Console.Writeline.

However when inside a Terminal.Gui.Window nothing happens. Is there an example of listening to outside events I can follow?

Thank you ahead of time.

[tznind]

Is there an example of listening to outside events I can follow?

Here is an example of listening to an API and updating a TextView with the results. If you are doing high volume of events or anything complicated I would suggest creating your own View rather than TextView which is more designed as a text editor than a pure display.

using delme4;
using Terminal.Gui;


Application.Init();

var tv = new TextView
{
    Width = Dim.Fill(),
    Height = Dim.Fill()
};

// Create an imaginary API
var a = new FakeApi();

// When an event on the API is sent to us
a.SomeEvent += (e) =>
{
    // Switch to main UI thread
    Application.MainLoop.Invoke(() =>
    {
        // and update the text box
        tv.Text += e + '\n';
    });
    
};

// Start the fake API in background thread
Task.Run(a.Run);



try
{
    var w = new Window();
    w.Add(tv);

    Application.Run(w);
}
finally
{
    Application.Shutdown();
}

class FakeApi
{
    public event Action<string> SomeEvent;

    public void Run()
    {
        while(true)
        {
            Task.Delay(1000).Wait();
            SomeEvent.Invoke("flibble");
        }
    }
}