Програми для обліку

using Gtk;

class Program
{
    public static void Main()
    {
        Application.Init();
        new FirstWindow();
        Application.Run();
    }

    public static void Quit()
    {
        Application.Quit();
    }
}

using Gtk;

class FirstWindow : Window
{
    public FirstWindow() : base("Test")
    {
        SetDefaultSize(600, 350);
        SetPosition(WindowPosition.Center);

        DeleteEvent += delegate { Program.Quit(); };

        VBox vBox = new VBox();
        Add(vBox);

        HBox hBox = new HBox();
        vBox.PackStart(hBox, false, false, 5);

        //Simple
        {
            Button button = new Button("Кнопка");
            button.Clicked += (object? sender, EventArgs args) => { Console.WriteLine("Click"); };

            hBox.PackStart(button, false, false, 5);
        }

        //Image
        {
            Button button = new Button
            {
                AlwaysShowImage = true,
                Image = Image.NewFromIconName(Stock.Cancel, IconSize.Button),
            };
            button.Clicked += (object? sender, EventArgs args) => { Console.WriteLine("Click"); };

            hBox.PackStart(button, false, false, 5);
        }

        //Image + Text
        {
            Button button = new Button
            {
                Label = "Додати",
                ImagePosition = PositionType.Left,
                AlwaysShowImage = true,
                Image = Image.NewFromIconName(Stock.Add, IconSize.Button),
            };

            button.Image.MarginEnd = 5;
            button.Clicked += (object? sender, EventArgs args) => { Console.WriteLine("Click"); };

            hBox.PackStart(button, false, false, 5);
        }

        //Stock
        {
            Button button = new Button(Stock.Edit);
            button.Clicked += (object? sender, EventArgs args) => { Console.WriteLine("Click"); };

            hBox.PackStart(button, false, false, 5);
        }

        ShowAll();
    }
}