Fading Forms In and Out

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace FadeForm
{
    public partial class FadeFormDemo : FadeForm
    {
        public FadeFormDemo()
        {
            InitializeComponent();
            numericUpDownMinimizedOpacity.Value = (decimal)this.MinimizedOpacity;
            numericUpDownActiveOpacity.Value = (decimal)this.ActiveOpacity;
            numericUpDownInactiveOpacity.Value = (decimal)this.InactiveOpacity;
            numericUpDownTargetOpacity.Value = (decimal)this.TargetOpacity;
            numericUpDownFadeTime.Value = (decimal)this.FadeTime;
            timer1.Start();
        }

        [STAThread]
        static void Main()
        {
            Application.Run(new FadeFormDemo());
        }

        private void numericUpDownMinimizedOpacity_ValueChanged(object sender, EventArgs e)
        {
            this.MinimizedOpacity = (double)numericUpDownMinimizedOpacity.Value;
        }

        private void numericUpDownActiveOpacity_ValueChanged(object sender, EventArgs e)
        {
            this.ActiveOpacity = (double)numericUpDownActiveOpacity.Value;
        }

        private void numericUpDownInactiveOpacity_ValueChanged(object sender, EventArgs e)
        {
            this.InactiveOpacity = (double)numericUpDownInactiveOpacity.Value;
        }

        private void numericUpDownFadeTime_ValueChanged(object sender, EventArgs e)
        {
            this.FadeTime = (double)numericUpDownFadeTime.Value;
        }

        private void buttonTargetOpacity_Click(object sender, EventArgs e)
        {
            this.TargetOpacity = (double)numericUpDownTargetOpacity.Value;
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            if(!numericUpDownTargetOpacity.Focused&&!buttonTargetOpacity.Focused)numericUpDownTargetOpacity.Value=(decimal)this.TargetOpacity;
        }

        private void FadeFormDemo_Activated(object sender, EventArgs e)
        {
            numericUpDownMinimizedOpacity.Focus();
        }
    }
}