<|im_start|>system
You are a helpful AI assistant.<|im_end|>
<|im_start|>user
Give an example of the XML defining a GTK window for a To-Do list application. The UI design should follow Gnome's design guidelines.<|im_end|>
<|im_start|>assistant
Here's an example of XML code defining a GTK window for a To-Do list application that follows Gnome's design guidelines:

```xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE interface PUBLIC "-//GNOME//DTD Gtk 3.0//EN"
  "http://developer.gnome.org/dtd/3.0/gtk.dtd">
<interface>
  <object class="GtkWindow" id="main-window">
    <property name="title">To-Do List</property>
    <property name="default-width">600</property>
    <property name="default-height">400</property>
    <child>
      <object class="GtkBox" id="main-box">
        <property name="orientation">vertical</property>
        <child>
          <object class="GtkEntry" id="new-item-entry">
            <property name="hexpand">true</property>
            <property name="placeholder-text">Add a new item</property>
          </object>
        </child>
        <child>
          <object class="GtkScrolledWindow" id="item-list-scroll">
            <property name="hexpand">true</property>
            <property name="vexpand">true</property>
            <child>
              <object class="GtkListBox" id="item-list">
                <property name="selection-mode">none</property>
              </object>
            </child>
          </object>
        </child>
        <child>
          <object class="GtkButtonBox" id="button-box">
            <property name="layout-style">spread</property>
            <property name="halign">end</property>
            <child>
              <object class="GtkButton" id="add-button">
                <property name="label">Add</property>
              </object>
            </child>
            <child>
              <object class="GtkButton" id="delete-button">
                <property name="label">Delete</property>
                <property name="sensitive">false</property>
              </object>
            </child>
          </object>
        </child>
      </object>
    </child>
  </object>
</interface>
```

In this example, the XML code defines a GTK window with a vertical box layout containing three child elements: an entry box for adding new items, a scrolled window containing a list box of items, and a button box containing "Add" and "Delete" buttons. The code also sets properties for various elements, such as the window title, default size, and button labels. The design follows Gnome's guidelines for spacing, alignment, and layout style.<|im_end|>
<|im_start|>user
Thanks<|im_end|>
<|im_start|>assistant
You're welcome! If you have any more questions about the XML code or Gnome's design guidelines, feel free to ask.<|im_end|>
<|im_start|>user
Can you write some C# code to create a window and load that interface into it?<|im_end|>
<|im_start|>assistant
To create a GTK window in C# and load the provided XML interface, you'll need to use the GtkSharp library. 
Make sure to install the required NuGet packages for GtkSharp (Gtk3 and Gdk3), then you can use the following code:

```csharp
using System;
using Gtk;
using UI = Gtk.Builder.ObjectAttribute;

public class TodoListApp : Application
{
    [UI] private ApplicationWindow mainWindow = null;

    public TodoListApp() : base("org.example.TodoListApp", ApplicationFlags.None) { }

    protected override void OnActivate()
    {
        base.OnActivate();
        var builder = new Builder();
        builder.AddFromString(xmlInterface);
        builder.Autoconnect(this);
        mainWindow.ShowAll();
    }

    private static string xmlInterface = @"<!-- The XML string containing your UI design -->";

    public static void Main(string[] args)
    {
        Application.Init();
        var app = new TodoListApp();
        app.Run(args);
    }
}
```

Replace <!-- The XML string containing your UI design --> with the XML string containing the UI design you provided earlier.
This code defines a TodoListApp class that inherits from the Gtk.Application class. The OnActivate method is overridden to load the provided XML interface using the Gtk.Builder class. The Autoconnect method is used to connect the C# class members with the corresponding widgets in the XML.
Remember to install the GtkSharp NuGet packages before running the code.<|im_end|>