Calculator Wiget

HelloWorldWidget.cs

using System;
using System.Text;
using NGettext;
using R7.Webmate.Xwt.Icons;
using R7.Webmate.Xwt.Text;
using Xwt;

namespace R7.Webmate.Xwt
{
    public class HelloWorldWidget : Widget
    {
        protected ICatalog T = TextCatalogKeeper.GetDefault ();

        protected TextEntry txtWidth;

        protected TextEntry txtHeight;

        protected TextEntry txtCalculed;

        public HelloWorldWidget()
        {
            var vbox = new VBox ();
            var lblWidth = new Label (T.GetString ("Ширина:"));

            var lblHeight = new Label(T.GetString("Высота:"));

            var btnCalculed = new Button (T.GetString ("Click me!"));

            txtWidth = new TextEntry  ();
            txtHeight = new TextEntry();
            txtCalculed = new TextEntry ();

            btnCalculed.Clicked += btnCalculed_Clicked;

            vbox.PackStart (lblWidth, false, true);
            vbox.PackStart (txtWidth, false, true);
            vbox.PackStart(lblHeight, false, true);
            vbox.PackStart(txtHeight, false, true);
            vbox.PackStart (btnCalculed, false, true);
            vbox.PackStart (txtCalculed, false, true);

            vbox.Margin = Const.VBOX_MARGIN;
            Content = vbox;
            Content.Show ();
        }

        void btnCalculed_Clicked(object sender, EventArgs e)
        {
            var w = int.Parse (txtWidth.Text);
            var h = int.Parse (txtHeight.Text);
            var r = (float) w / h;
            txtCalculed.Text = r.ToString ();
        }
    }
}