Making controls visible in properties window?

[lxXTaCoXxl]

I'm trying to replicate the visual basic power packs controls (rectangle, oval, and line) so that express users can get a spin of these wonderful graphic controls. However, I'm having some trouble getting the basic properties of them into the properties window instead of just the code editor window.

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

namespace Dev9_Controls
{
    public enum GradientStyle
    {
        None,
        Horizontal,
        Vertical,
        ForwardDiagonal,
        BackwardDiagonal,
        Central
    }

    public partial class GradientRectangle : UserControl
    {
        private Color gColor;
        private GradientStyle gStyle;

        [Category("Fill Gradient Color")]
        [Description("Changes the lower color of the rectangle.")]
        public Color FillGradientColor
        {
            get
            {
                return gColor;
            }

            set
            {
                gColor = value;
                rectangleShape1.FillGradientColor = gColor;
            }
        }

        [Category("Border Color")]
        public override Color BackColor
        {
            get
            {
                return rectangleShape1.BorderColor;
            }

            set
            {
                rectangleShape1.BorderColor = value;
            }
        }

        [Category("Fill Color")]
        [Description("Changes the upper color of the rectangle.")]
        public override Color ForeColor
        {
            get
            {
                return rectangleShape1.FillColor;
            }

            set
            {
                rectangleShape1.FillColor = value;
            }
        }

        [Category("Gradient Style")]
        public GradientStyle Style
        {
            get
            {
                return gStyle;
            }

            set
            {
                gStyle = value;

                if (gStyle == GradientStyle.None)
                    rectangleShape1.FillGradientStyle = Microsoft.VisualBasic.PowerPacks.FillGradientStyle.None;

                else if (gStyle == GradientStyle.Horizontal)
                    rectangleShape1.FillGradientStyle = Microsoft.VisualBasic.PowerPacks.FillGradientStyle.Horizontal;

                else if (gStyle == GradientStyle.Vertical)
                    rectangleShape1.FillGradientStyle = Microsoft.VisualBasic.PowerPacks.FillGradientStyle.Vertical;

                else if (gStyle == GradientStyle.ForwardDiagonal)
                    rectangleShape1.FillGradientStyle = Microsoft.VisualBasic.PowerPacks.FillGradientStyle.ForwardDiagonal;

                else if (gStyle == GradientStyle.BackwardDiagonal)
                    rectangleShape1.FillGradientStyle = Microsoft.VisualBasic.PowerPacks.FillGradientStyle.BackwardDiagonal;

                else if (gStyle == GradientStyle.Central)
                    rectangleShape1.FillGradientStyle = Microsoft.VisualBasic.PowerPacks.FillGradientStyle.Central;
            }
        }

        public GradientRectangle()
        {
            InitializeComponent();
        }
    }
}