Source/ColorPickerItem/ColorCombControl.cs

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

namespace DevComponents.DotNetBar.ColorPickerItem
{
	[ToolboxItem(false)]
	internal class ColorCombControl : System.Windows.Forms.UserControl
    {
		#region Events
		public event EventHandler SelectedColorChanged;
		#endregion
		
        #region Private Variables
        private CombCell[] m_ColorCombs = new CombCell[144];
        private const float YOffset = .824f;
        private float[] arrXOffset = new float[] { -0.5f, -1.0f, -0.5f, 0.5f, 1.0f, 0.5f };
        private float[] arrYOffset = new float[] { YOffset, 0.0f, -YOffset, -YOffset, 0.0f, YOffset };
        private int CombDepth = 7;
        private int m_MouseOverIndex = -1;
        private int m_SelectedIndex = -1;

        /// <summary> 
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;
        #endregion

        #region Constructor, Dispose
        public ColorCombControl()
		{
            for (int i = 0; i < m_ColorCombs.Length; i++)
                m_ColorCombs[i] = new CombCell();

            this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
            this.SetStyle(ControlStyles.UserPaint, true);
            this.SetStyle(ControlStyles.Opaque, true);
            this.SetStyle(DisplayHelp.DoubleBufferFlag, true);
            this.SetStyle(ControlStyles.ResizeRedraw, true);
			this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
			InitializeComponent();
		}

		/// <summary> 
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
        }