KnownColorTable.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / CommonUI / System / Drawing / KnownColorTable.cs / 1 / KnownColorTable.cs

                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Drawing { 
 
    using System.Runtime.InteropServices;
    using System.Diagnostics; 
    using System;
    using Microsoft.Win32;
#if !FEATURE_PAL
    using System.Drawing.Internal; 
#endif
 
    static internal class KnownColorTable { 
        private static int[] colorTable;
        private static string[] colorNameTable; 

        /**
         * Shift count and bit mask for A, R, G, B components
         */ 
        private const int AlphaShift  = 24;
        private const int RedShift    = 16; 
        private const int GreenShift  = 8; 
        private const int BlueShift   = 0;
 
        private const int Win32RedShift    = 0;
        private const int Win32GreenShift  = 8;
        private const int Win32BlueShift   = 16;
 
        public static Color ArgbToKnownColor(int targetARGB) {
            EnsureColorTable(); 
            for(int index = 0; index < colorTable.Length; ++index) { 
                int argb = colorTable[index];
                if (argb == targetARGB) { 
                    Color color = Color.FromKnownColor((KnownColor)index);
                    if (!color.IsSystemColor)
                        return color;
                } 
            }
 
            return Color.FromArgb(targetARGB); 
        }
 
        private static void EnsureColorTable() {
            // no need to lock... worse case is a double create of the table...
            //
            if (colorTable == null) { 
                InitColorTable();
            } 
        } 

        private static void InitColorTable() { 
            int[] values = new int[((int)KnownColor.MenuHighlight) + 1];

            // system
            // 
#if !FEATURE_PAL
            SystemEvents.UserPreferenceChanging += new UserPreferenceChangingEventHandler(OnUserPreferenceChanging); 
#endif 
            UpdateSystemColors(values);
 
            // just consts...
            //
            values[(int)KnownColor.Transparent] = 0x00FFFFFF;
            values[(int)KnownColor.AliceBlue] = unchecked((int)0xFFF0F8FF); 
            values[(int)KnownColor.AntiqueWhite] = unchecked((int)0xFFFAEBD7);
            values[(int)KnownColor.Aqua] = unchecked((int)0xFF00FFFF); 
            values[(int)KnownColor.Aquamarine] = unchecked((int)0xFF7FFFD4); 
            values[(int)KnownColor.Azure] = unchecked((int)0xFFF0FFFF);
            values[(int)KnownColor.Beige] = unchecked((int)0xFFF5F5DC); 
            values[(int)KnownColor.Bisque] = unchecked(unchecked((int)0xFFFFE4C4));
            values[(int)KnownColor.Black] = unchecked((int)0xFF000000);
            values[(int)KnownColor.BlanchedAlmond] = unchecked((int)0xFFFFEBCD);
            values[(int)KnownColor.Blue] = unchecked((int)0xFF0000FF); 
            values[(int)KnownColor.BlueViolet] = unchecked((int)0xFF8A2BE2);
            values[(int)KnownColor.Brown] = unchecked((int)0xFFA52A2A); 
            values[(int)KnownColor.BurlyWood] = unchecked((int)0xFFDEB887); 
            values[(int)KnownColor.CadetBlue] = unchecked((int)0xFF5F9EA0);
            values[(int)KnownColor.Chartreuse] = unchecked((int)0xFF7FFF00); 
            values[(int)KnownColor.Chocolate] = unchecked((int)0xFFD2691E);
            values[(int)KnownColor.Coral] = unchecked((int)0xFFFF7F50);
            values[(int)KnownColor.CornflowerBlue] = unchecked((int)0xFF6495ED);
            values[(int)KnownColor.Cornsilk] = unchecked((int)0xFFFFF8DC); 
            values[(int)KnownColor.Crimson] = unchecked((int)0xFFDC143C);
            values[(int)KnownColor.Cyan] = unchecked((int)0xFF00FFFF); 
            values[(int)KnownColor.DarkBlue] = unchecked((int)0xFF00008B); 
            values[(int)KnownColor.DarkCyan] = unchecked((int)0xFF008B8B);
            values[(int)KnownColor.DarkGoldenrod] = unchecked((int)0xFFB8860B); 
            values[(int)KnownColor.DarkGray] = unchecked((int)0xFFA9A9A9);
            values[(int)KnownColor.DarkGreen] = unchecked((int)0xFF006400);
            values[(int)KnownColor.DarkKhaki] = unchecked((int)0xFFBDB76B);
            values[(int)KnownColor.DarkMagenta] = unchecked((int)0xFF8B008B); 
            values[(int)KnownColor.DarkOliveGreen] = unchecked((int)0xFF556B2F);
            values[(int)KnownColor.DarkOrange] = unchecked((int)0xFFFF8C00); 
            values[(int)KnownColor.DarkOrchid] = unchecked((int)0xFF9932CC); 
            values[(int)KnownColor.DarkRed] = unchecked((int)0xFF8B0000);
            values[(int)KnownColor.DarkSalmon] = unchecked((int)0xFFE9967A); 
            values[(int)KnownColor.DarkSeaGreen] = unchecked((int)0xFF8FBC8B);
            values[(int)KnownColor.DarkSlateBlue] = unchecked((int)0xFF483D8B);
            values[(int)KnownColor.DarkSlateGray] = unchecked((int)0xFF2F4F4F);
            values[(int)KnownColor.DarkTurquoise] = unchecked((int)0xFF00CED1); 
            values[(int)KnownColor.DarkViolet] = unchecked((int)0xFF9400D3);
            values[(int)KnownColor.DeepPink] = unchecked((int)0xFFFF1493); 
            values[(int)KnownColor.DeepSkyBlue] = unchecked((int)0xFF00BFFF); 
            values[(int)KnownColor.DimGray] = unchecked((int)0xFF696969);
            values[(int)KnownColor.DodgerBlue] = unchecked((int)0xFF1E90FF); 
            values[(int)KnownColor.Firebrick] = unchecked((int)0xFFB22222);
            values[(int)KnownColor.FloralWhite] = unchecked((int)0xFFFFFAF0);
            values[(int)KnownColor.ForestGreen] = unchecked((int)0xFF228B22);
            values[(int)KnownColor.Fuchsia] = unchecked((int)0xFFFF00FF); 
            values[(int)KnownColor.Gainsboro] = unchecked((int)0xFFDCDCDC);
            values[(int)KnownColor.GhostWhite] = unchecked((int)0xFFF8F8FF); 
            values[(int)KnownColor.Gold] = unchecked((int)0xFFFFD700); 
            values[(int)KnownColor.Goldenrod] = unchecked((int)0xFFDAA520);
            values[(int)KnownColor.Gray] = unchecked((int)0xFF808080); 
            values[(int)KnownColor.Green] = unchecked((int)0xFF008000);
            values[(int)KnownColor.GreenYellow] = unchecked((int)0xFFADFF2F);
            values[(int)KnownColor.Honeydew] = unchecked((int)0xFFF0FFF0);
            values[(int)KnownColor.HotPink] = unchecked((int)0xFFFF69B4); 
            values[(int)KnownColor.IndianRed] = unchecked((int)0xFFCD5C5C);
            values[(int)KnownColor.Indigo] = unchecked((int)0xFF4B0082); 
            values[(int)KnownColor.Ivory] = unchecked((int)0xFFFFFFF0); 
            values[(int)KnownColor.Khaki] = unchecked((int)0xFFF0E68C);
            values[(int)KnownColor.Lavender] = unchecked((int)0xFFE6E6FA); 
            values[(int)KnownColor.LavenderBlush] = unchecked((int)0xFFFFF0F5);
            values[(int)KnownColor.LawnGreen] = unchecked((int)0xFF7CFC00);
            values[(int)KnownColor.LemonChiffon] = unchecked((int)0xFFFFFACD);
            values[(int)KnownColor.LightBlue] = unchecked((int)0xFFADD8E6); 
            values[(int)KnownColor.LightCoral] = unchecked((int)0xFFF08080);
            values[(int)KnownColor.LightCyan] = unchecked((int)0xFFE0FFFF); 
            values[(int)KnownColor.LightGoldenrodYellow] = unchecked((int)0xFFFAFAD2); 
            values[(int)KnownColor.LightGray] = unchecked((int)0xFFD3D3D3);
            values[(int)KnownColor.LightGreen] = unchecked((int)0xFF90EE90); 
            values[(int)KnownColor.LightPink] = unchecked((int)0xFFFFB6C1);
            values[(int)KnownColor.LightSalmon] = unchecked((int)0xFFFFA07A);
            values[(int)KnownColor.LightSeaGreen] = unchecked((int)0xFF20B2AA);
            values[(int)KnownColor.LightSkyBlue] = unchecked((int)0xFF87CEFA); 
            values[(int)KnownColor.LightSlateGray] = unchecked((int)0xFF778899);
            values[(int)KnownColor.LightSteelBlue] = unchecked((int)0xFFB0C4DE); 
            values[(int)KnownColor.LightYellow] = unchecked((int)0xFFFFFFE0); 
            values[(int)KnownColor.Lime] = unchecked((int)0xFF00FF00);
            values[(int)KnownColor.LimeGreen] = unchecked((int)0xFF32CD32); 
            values[(int)KnownColor.Linen] = unchecked((int)0xFFFAF0E6);
            values[(int)KnownColor.Magenta] = unchecked((int)0xFFFF00FF);
            values[(int)KnownColor.Maroon] = unchecked((int)0xFF800000);
            values[(int)KnownColor.MediumAquamarine] = unchecked((int)0xFF66CDAA); 
            values[(int)KnownColor.MediumBlue] = unchecked((int)0xFF0000CD);
            values[(int)KnownColor.MediumOrchid] = unchecked((int)0xFFBA55D3); 
            values[(int)KnownColor.MediumPurple] = unchecked((int)0xFF9370DB); 
            values[(int)KnownColor.MediumSeaGreen] = unchecked((int)0xFF3CB371);
            values[(int)KnownColor.MediumSlateBlue] = unchecked((int)0xFF7B68EE); 
            values[(int)KnownColor.MediumSpringGreen] = unchecked((int)0xFF00FA9A);
            values[(int)KnownColor.MediumTurquoise] = unchecked((int)0xFF48D1CC);
            values[(int)KnownColor.MediumVioletRed] = unchecked((int)0xFFC71585);
            values[(int)KnownColor.MidnightBlue] = unchecked((int)0xFF191970); 
            values[(int)KnownColor.MintCream] = unchecked((int)0xFFF5FFFA);
            values[(int)KnownColor.MistyRose] = unchecked((int)0xFFFFE4E1); 
            values[(int)KnownColor.Moccasin] = unchecked((int)0xFFFFE4B5); 
            values[(int)KnownColor.NavajoWhite] = unchecked((int)0xFFFFDEAD);
            values[(int)KnownColor.Navy] = unchecked((int)0xFF000080); 
            values[(int)KnownColor.OldLace] = unchecked((int)0xFFFDF5E6);
            values[(int)KnownColor.Olive] = unchecked((int)0xFF808000);
            values[(int)KnownColor.OliveDrab] = unchecked((int)0xFF6B8E23);
            values[(int)KnownColor.Orange] = unchecked((int)0xFFFFA500); 
            values[(int)KnownColor.OrangeRed] = unchecked((int)0xFFFF4500);
            values[(int)KnownColor.Orchid] = unchecked((int)0xFFDA70D6); 
            values[(int)KnownColor.PaleGoldenrod] = unchecked((int)0xFFEEE8AA); 
            values[(int)KnownColor.PaleGreen] = unchecked((int)0xFF98FB98);
            values[(int)KnownColor.PaleTurquoise] = unchecked((int)0xFFAFEEEE); 
            values[(int)KnownColor.PaleVioletRed] = unchecked((int)0xFFDB7093);
            values[(int)KnownColor.PapayaWhip] = unchecked((int)0xFFFFEFD5);
            values[(int)KnownColor.PeachPuff] = unchecked((int)0xFFFFDAB9);
            values[(int)KnownColor.Peru] = unchecked((int)0xFFCD853F); 
            values[(int)KnownColor.Pink] = unchecked((int)0xFFFFC0CB);
            values[(int)KnownColor.Plum] = unchecked((int)0xFFDDA0DD); 
            values[(int)KnownColor.PowderBlue] = unchecked((int)0xFFB0E0E6); 
            values[(int)KnownColor.Purple] = unchecked((int)0xFF800080);
            values[(int)KnownColor.Red] = unchecked((int)0xFFFF0000); 
            values[(int)KnownColor.RosyBrown] = unchecked((int)0xFFBC8F8F);
            values[(int)KnownColor.RoyalBlue] = unchecked((int)0xFF4169E1);
            values[(int)KnownColor.SaddleBrown] = unchecked((int)0xFF8B4513);
            values[(int)KnownColor.Salmon] = unchecked((int)0xFFFA8072); 
            values[(int)KnownColor.SandyBrown] = unchecked((int)0xFFF4A460);
            values[(int)KnownColor.SeaGreen] = unchecked((int)0xFF2E8B57); 
            values[(int)KnownColor.SeaShell] = unchecked((int)0xFFFFF5EE); 
            values[(int)KnownColor.Sienna] = unchecked((int)0xFFA0522D);
            values[(int)KnownColor.Silver] = unchecked((int)0xFFC0C0C0); 
            values[(int)KnownColor.SkyBlue] = unchecked((int)0xFF87CEEB);
            values[(int)KnownColor.SlateBlue] = unchecked((int)0xFF6A5ACD);
            values[(int)KnownColor.SlateGray] = unchecked((int)0xFF708090);
            values[(int)KnownColor.Snow] = unchecked((int)0xFFFFFAFA); 
            values[(int)KnownColor.SpringGreen] = unchecked((int)0xFF00FF7F);
            values[(int)KnownColor.SteelBlue] = unchecked((int)0xFF4682B4); 
            values[(int)KnownColor.Tan] = unchecked((int)0xFFD2B48C); 
            values[(int)KnownColor.Teal] = unchecked((int)0xFF008080);
            values[(int)KnownColor.Thistle] = unchecked((int)0xFFD8BFD8); 
            values[(int)KnownColor.Tomato] = unchecked((int)0xFFFF6347);
            values[(int)KnownColor.Turquoise] = unchecked((int)0xFF40E0D0);
            values[(int)KnownColor.Violet] = unchecked((int)0xFFEE82EE);
            values[(int)KnownColor.Wheat] = unchecked((int)0xFFF5DEB3); 
            values[(int)KnownColor.White] = unchecked((int)0xFFFFFFFF);
            values[(int)KnownColor.WhiteSmoke] = unchecked((int)0xFFF5F5F5); 
            values[(int)KnownColor.Yellow] = unchecked((int)0xFFFFFF00); 
            values[(int)KnownColor.YellowGreen] = unchecked((int)0xFF9ACD32);
            colorTable = values; 
        }

        private static void EnsureColorNameTable() {
            // no need to lock... worse case is a double create of the table... 
            //
            if (colorNameTable == null) { 
                InitColorNameTable(); 
            }
        } 

        private static void InitColorNameTable() {
            string[] values = new string[((int)KnownColor.MenuHighlight) + 1];
 
            // just consts...
            // 
            values[(int)KnownColor.ActiveBorder] = "ActiveBorder"; 
            values[(int)KnownColor.ActiveCaption] = "ActiveCaption";
            values[(int)KnownColor.ActiveCaptionText] = "ActiveCaptionText"; 
            values[(int)KnownColor.AppWorkspace] = "AppWorkspace";
            values[(int)KnownColor.ButtonFace] = "ButtonFace";
            values[(int)KnownColor.ButtonHighlight] = "ButtonHighlight";
            values[(int)KnownColor.ButtonShadow] = "ButtonShadow"; 
            values[(int)KnownColor.Control] = "Control";
            values[(int)KnownColor.ControlDark] = "ControlDark"; 
            values[(int)KnownColor.ControlDarkDark] = "ControlDarkDark"; 
            values[(int)KnownColor.ControlLight] = "ControlLight";
            values[(int)KnownColor.ControlLightLight] = "ControlLightLight"; 
            values[(int)KnownColor.ControlText] = "ControlText";
            values[(int)KnownColor.Desktop] = "Desktop";
            values[(int)KnownColor.GradientActiveCaption] = "GradientActiveCaption";
            values[(int)KnownColor.GradientInactiveCaption] = "GradientInactiveCaption"; 
            values[(int)KnownColor.GrayText] = "GrayText";
            values[(int)KnownColor.Highlight] = "Highlight"; 
            values[(int)KnownColor.HighlightText] = "HighlightText"; 
            values[(int)KnownColor.HotTrack] = "HotTrack";
            values[(int)KnownColor.InactiveBorder] = "InactiveBorder"; 
            values[(int)KnownColor.InactiveCaption] = "InactiveCaption";
            values[(int)KnownColor.InactiveCaptionText] = "InactiveCaptionText";
            values[(int)KnownColor.Info] = "Info";
            values[(int)KnownColor.InfoText] = "InfoText"; 
            values[(int)KnownColor.Menu] = "Menu";
            values[(int)KnownColor.MenuBar] = "MenuBar"; 
            values[(int)KnownColor.MenuHighlight] = "MenuHighlight"; 
            values[(int)KnownColor.MenuText] = "MenuText";
            values[(int)KnownColor.ScrollBar] = "ScrollBar"; 
            values[(int)KnownColor.Window] = "Window";
            values[(int)KnownColor.WindowFrame] = "WindowFrame";
            values[(int)KnownColor.WindowText] = "WindowText";
 
            values[(int)KnownColor.Transparent] = "Transparent";
            values[(int)KnownColor.AliceBlue] = "AliceBlue"; 
            values[(int)KnownColor.AntiqueWhite] = "AntiqueWhite"; 
            values[(int)KnownColor.Aqua] = "Aqua";
            values[(int)KnownColor.Aquamarine] = "Aquamarine"; 
            values[(int)KnownColor.Azure] = "Azure";
            values[(int)KnownColor.Beige] = "Beige";
            values[(int)KnownColor.Bisque] = "Bisque";
            values[(int)KnownColor.Black] = "Black"; 
            values[(int)KnownColor.BlanchedAlmond] = "BlanchedAlmond";
            values[(int)KnownColor.Blue] = "Blue"; 
            values[(int)KnownColor.BlueViolet] = "BlueViolet"; 
            values[(int)KnownColor.Brown] = "Brown";
            values[(int)KnownColor.BurlyWood] = "BurlyWood"; 
            values[(int)KnownColor.CadetBlue] = "CadetBlue";
            values[(int)KnownColor.Chartreuse] = "Chartreuse";
            values[(int)KnownColor.Chocolate] = "Chocolate";
            values[(int)KnownColor.Coral] = "Coral"; 
            values[(int)KnownColor.CornflowerBlue] = "CornflowerBlue";
            values[(int)KnownColor.Cornsilk] = "Cornsilk"; 
            values[(int)KnownColor.Crimson] = "Crimson"; 
            values[(int)KnownColor.Cyan] = "Cyan";
            values[(int)KnownColor.DarkBlue] = "DarkBlue"; 
            values[(int)KnownColor.DarkCyan] = "DarkCyan";
            values[(int)KnownColor.DarkGoldenrod] = "DarkGoldenrod";
            values[(int)KnownColor.DarkGray] = "DarkGray";
            values[(int)KnownColor.DarkGreen] = "DarkGreen"; 
            values[(int)KnownColor.DarkKhaki] = "DarkKhaki";
            values[(int)KnownColor.DarkMagenta] = "DarkMagenta"; 
            values[(int)KnownColor.DarkOliveGreen] = "DarkOliveGreen"; 
            values[(int)KnownColor.DarkOrange] = "DarkOrange";
            values[(int)KnownColor.DarkOrchid] = "DarkOrchid"; 
            values[(int)KnownColor.DarkRed] = "DarkRed";
            values[(int)KnownColor.DarkSalmon] = "DarkSalmon";
            values[(int)KnownColor.DarkSeaGreen] = "DarkSeaGreen";
            values[(int)KnownColor.DarkSlateBlue] = "DarkSlateBlue"; 
            values[(int)KnownColor.DarkSlateGray] = "DarkSlateGray";
            values[(int)KnownColor.DarkTurquoise] = "DarkTurquoise"; 
            values[(int)KnownColor.DarkViolet] = "DarkViolet"; 
            values[(int)KnownColor.DeepPink] = "DeepPink";
            values[(int)KnownColor.DeepSkyBlue] = "DeepSkyBlue"; 
            values[(int)KnownColor.DimGray] = "DimGray";
            values[(int)KnownColor.DodgerBlue] = "DodgerBlue";
            values[(int)KnownColor.Firebrick] = "Firebrick";
            values[(int)KnownColor.FloralWhite] = "FloralWhite"; 
            values[(int)KnownColor.ForestGreen] = "ForestGreen";
            values[(int)KnownColor.Fuchsia] = "Fuchsia"; 
            values[(int)KnownColor.Gainsboro] = "Gainsboro"; 
            values[(int)KnownColor.GhostWhite] = "GhostWhite";
            values[(int)KnownColor.Gold] = "Gold"; 
            values[(int)KnownColor.Goldenrod] = "Goldenrod";
            values[(int)KnownColor.Gray] = "Gray";
            values[(int)KnownColor.Green] = "Green";
            values[(int)KnownColor.GreenYellow] = "GreenYellow"; 
            values[(int)KnownColor.Honeydew] = "Honeydew";
            values[(int)KnownColor.HotPink] = "HotPink"; 
            values[(int)KnownColor.IndianRed] = "IndianRed"; 
            values[(int)KnownColor.Indigo] = "Indigo";
            values[(int)KnownColor.Ivory] = "Ivory"; 
            values[(int)KnownColor.Khaki] = "Khaki";
            values[(int)KnownColor.Lavender] = "Lavender";
            values[(int)KnownColor.LavenderBlush] = "LavenderBlush";
            values[(int)KnownColor.LawnGreen] = "LawnGreen"; 
            values[(int)KnownColor.LemonChiffon] = "LemonChiffon";
            values[(int)KnownColor.LightBlue] = "LightBlue"; 
            values[(int)KnownColor.LightCoral] = "LightCoral"; 
            values[(int)KnownColor.LightCyan] = "LightCyan";
            values[(int)KnownColor.LightGoldenrodYellow] = "LightGoldenrodYellow"; 
            values[(int)KnownColor.LightGray] = "LightGray";
            values[(int)KnownColor.LightGreen] = "LightGreen";
            values[(int)KnownColor.LightPink] = "LightPink";
            values[(int)KnownColor.LightSalmon] = "LightSalmon"; 
            values[(int)KnownColor.LightSeaGreen] = "LightSeaGreen";
            values[(int)KnownColor.LightSkyBlue] = "LightSkyBlue"; 
            values[(int)KnownColor.LightSlateGray] = "LightSlateGray"; 
            values[(int)KnownColor.LightSteelBlue] = "LightSteelBlue";
            values[(int)KnownColor.LightYellow] = "LightYellow"; 
            values[(int)KnownColor.Lime] = "Lime";
            values[(int)KnownColor.LimeGreen] = "LimeGreen";
            values[(int)KnownColor.Linen] = "Linen";
            values[(int)KnownColor.Magenta] = "Magenta"; 
            values[(int)KnownColor.Maroon] = "Maroon";
            values[(int)KnownColor.MediumAquamarine] = "MediumAquamarine"; 
            values[(int)KnownColor.MediumBlue] = "MediumBlue"; 
            values[(int)KnownColor.MediumOrchid] = "MediumOrchid";
            values[(int)KnownColor.MediumPurple] = "MediumPurple"; 
            values[(int)KnownColor.MediumSeaGreen] = "MediumSeaGreen";
            values[(int)KnownColor.MediumSlateBlue] = "MediumSlateBlue";
            values[(int)KnownColor.MediumSpringGreen] = "MediumSpringGreen";
            values[(int)KnownColor.MediumTurquoise] = "MediumTurquoise"; 
            values[(int)KnownColor.MediumVioletRed] = "MediumVioletRed";
            values[(int)KnownColor.MidnightBlue] = "MidnightBlue"; 
            values[(int)KnownColor.MintCream] = "MintCream"; 
            values[(int)KnownColor.MistyRose] = "MistyRose";
            values[(int)KnownColor.Moccasin] = "Moccasin"; 
            values[(int)KnownColor.NavajoWhite] = "NavajoWhite";
            values[(int)KnownColor.Navy] = "Navy";
            values[(int)KnownColor.OldLace] = "OldLace";
            values[(int)KnownColor.Olive] = "Olive"; 
            values[(int)KnownColor.OliveDrab] = "OliveDrab";
            values[(int)KnownColor.Orange] = "Orange"; 
            values[(int)KnownColor.OrangeRed] = "OrangeRed"; 
            values[(int)KnownColor.Orchid] = "Orchid";
            values[(int)KnownColor.PaleGoldenrod] = "PaleGoldenrod"; 
            values[(int)KnownColor.PaleGreen] = "PaleGreen";
            values[(int)KnownColor.PaleTurquoise] = "PaleTurquoise";
            values[(int)KnownColor.PaleVioletRed] = "PaleVioletRed";
            values[(int)KnownColor.PapayaWhip] = "PapayaWhip"; 
            values[(int)KnownColor.PeachPuff] = "PeachPuff";
            values[(int)KnownColor.Peru] = "Peru"; 
            values[(int)KnownColor.Pink] = "Pink"; 
            values[(int)KnownColor.Plum] = "Plum";
            values[(int)KnownColor.PowderBlue] = "PowderBlue"; 
            values[(int)KnownColor.Purple] = "Purple";
            values[(int)KnownColor.Red] = "Red";
            values[(int)KnownColor.RosyBrown] = "RosyBrown";
            values[(int)KnownColor.RoyalBlue] = "RoyalBlue"; 
            values[(int)KnownColor.SaddleBrown] = "SaddleBrown";
            values[(int)KnownColor.Salmon] = "Salmon"; 
            values[(int)KnownColor.SandyBrown] = "SandyBrown"; 
            values[(int)KnownColor.SeaGreen] = "SeaGreen";
            values[(int)KnownColor.SeaShell] = "SeaShell"; 
            values[(int)KnownColor.Sienna] = "Sienna";
            values[(int)KnownColor.Silver] = "Silver";
            values[(int)KnownColor.SkyBlue] = "SkyBlue";
            values[(int)KnownColor.SlateBlue] = "SlateBlue"; 
            values[(int)KnownColor.SlateGray] = "SlateGray";
            values[(int)KnownColor.Snow] = "Snow"; 
            values[(int)KnownColor.SpringGreen] = "SpringGreen"; 
            values[(int)KnownColor.SteelBlue] = "SteelBlue";
            values[(int)KnownColor.Tan] = "Tan"; 
            values[(int)KnownColor.Teal] = "Teal";
            values[(int)KnownColor.Thistle] = "Thistle";
            values[(int)KnownColor.Tomato] = "Tomato";
            values[(int)KnownColor.Turquoise] = "Turquoise"; 
            values[(int)KnownColor.Violet] = "Violet";
            values[(int)KnownColor.Wheat] = "Wheat"; 
            values[(int)KnownColor.White] = "White"; 
            values[(int)KnownColor.WhiteSmoke] = "WhiteSmoke";
            values[(int)KnownColor.Yellow] = "Yellow"; 
            values[(int)KnownColor.YellowGreen] = "YellowGreen";
            colorNameTable = values;
        }
 
        public static int KnownColorToArgb(KnownColor color) {
            EnsureColorTable(); 
            if (color <= KnownColor.MenuHighlight) { 
                return colorTable[(int)color];
            } 
            else {
                return 0;
            }
        } 

        public static string KnownColorToName(KnownColor color) { 
            EnsureColorNameTable(); 
            if (color <= KnownColor.MenuHighlight) {
                return colorNameTable[(int)color]; 
            }
            else {
                return null;
            } 
        }
#if !FEATURE_PAL 
        private static int SystemColorToArgb(int index) { 
            return FromWin32Value(SafeNativeMethods.GetSysColor(index));
        } 

        private static int Encode(int alpha, int red, int green, int blue) {
            return red << RedShift | green << GreenShift | blue << BlueShift | alpha << AlphaShift;
        } 

        private static int FromWin32Value(int value) { 
            return Encode(255, 
                          (value >> Win32RedShift) & 0xFF,
                          (value >> Win32GreenShift) & 0xFF, 
                          (value >> Win32BlueShift) & 0xFF);
        }

        private static void OnUserPreferenceChanging(object sender, UserPreferenceChangingEventArgs e) { 
            if (e.Category == UserPreferenceCategory.Color && colorTable != null) {
                UpdateSystemColors(colorTable); 
            } 
        }
#endif // !FEATURE_PAL 

        private static void UpdateSystemColors(int[] colorTable) {
#if !FEATURE_PAL
            colorTable[(int)KnownColor.ActiveBorder] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ActiveBorder); 
            colorTable[(int)KnownColor.ActiveCaption] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ActiveCaption);
            colorTable[(int)KnownColor.ActiveCaptionText] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ActiveCaptionText); 
            colorTable[(int)KnownColor.AppWorkspace] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.AppWorkspace); 
            colorTable[(int)KnownColor.ButtonFace] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ButtonFace);
            colorTable[(int)KnownColor.ButtonHighlight] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ButtonHighlight); 
            colorTable[(int)KnownColor.ButtonShadow] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ButtonShadow);
            colorTable[(int)KnownColor.Control] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.Control);
            colorTable[(int)KnownColor.ControlDark] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ControlDark);
            colorTable[(int)KnownColor.ControlDarkDark] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ControlDarkDark); 
            colorTable[(int)KnownColor.ControlLight] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ControlLight);
            colorTable[(int)KnownColor.ControlLightLight] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ControlLightLight); 
            colorTable[(int)KnownColor.ControlText] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ControlText); 
            colorTable[(int)KnownColor.Desktop] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.Desktop);
            colorTable[(int)KnownColor.GradientActiveCaption] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.GradientActiveCaption); 
            colorTable[(int)KnownColor.GradientInactiveCaption] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.GradientInactiveCaption);
            colorTable[(int)KnownColor.GrayText] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.GrayText);
            colorTable[(int)KnownColor.Highlight] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.Highlight);
            colorTable[(int)KnownColor.HighlightText] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.HighlightText); 
            colorTable[(int)KnownColor.HotTrack] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.HotTrack);
            colorTable[(int)KnownColor.InactiveBorder] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.InactiveBorder); 
            colorTable[(int)KnownColor.InactiveCaption] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.InactiveCaption); 
            colorTable[(int)KnownColor.InactiveCaptionText] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.InactiveCaptionText);
            colorTable[(int)KnownColor.Info] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.Info); 
            colorTable[(int)KnownColor.InfoText] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.InfoText);
            colorTable[(int)KnownColor.Menu] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.Menu);
            colorTable[(int)KnownColor.MenuBar] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.MenuBar);
            colorTable[(int)KnownColor.MenuHighlight] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.MenuHighlight); 
            colorTable[(int)KnownColor.MenuText] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.MenuText);
            colorTable[(int)KnownColor.ScrollBar] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ScrollBar); 
            colorTable[(int)KnownColor.Window] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.Window); 
            colorTable[(int)KnownColor.WindowFrame] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.WindowFrame);
            colorTable[(int)KnownColor.WindowText] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.WindowText); 
#else
            // Colors from a default XP desktop for use by UI designers in ASP.NET: [....]
            colorTable[(int)KnownColor.ActiveBorder] = unchecked((int)0xffd4d0c8);
            colorTable[(int)KnownColor.ActiveCaption] = unchecked((int)0xff0054e3); 
            colorTable[(int)KnownColor.ActiveCaptionText] = unchecked((int)0xffffffff);
            colorTable[(int)KnownColor.AppWorkspace] = unchecked((int)0xff808080); 
            colorTable[(int)KnownColor.ButtonFace] = unchecked((int)0x0); 
            colorTable[(int)KnownColor.ButtonHighlight] = unchecked((int)0x0);
            colorTable[(int)KnownColor.ButtonShadow] = unchecked((int)0x0); 
            colorTable[(int)KnownColor.Control] = unchecked((int)0xffece9d8);
            colorTable[(int)KnownColor.ControlDark] = unchecked((int)0xffaca899);
            colorTable[(int)KnownColor.ControlDarkDark] = unchecked((int)0xff716f64);
            colorTable[(int)KnownColor.ControlLight] = unchecked((int)0xfff1efe2); 
            colorTable[(int)KnownColor.ControlLightLight] = unchecked((int)0xffffffff);
            colorTable[(int)KnownColor.ControlText] = unchecked((int)0xff000000); 
            colorTable[(int)KnownColor.Desktop] = unchecked((int)0xff004e98); 
            colorTable[(int)KnownColor.GradientActiveCaption] = unchecked((int)0x0);
            colorTable[(int)KnownColor.GradientInactiveCaption] = unchecked((int)0x0); 
            colorTable[(int)KnownColor.GrayText] = unchecked((int)0xffaca899);
            colorTable[(int)KnownColor.Highlight] = unchecked((int)0xff316ac5);
            colorTable[(int)KnownColor.HighlightText] = unchecked((int)0xffffffff);
            colorTable[(int)KnownColor.HotTrack] = unchecked((int)0xff000080); 
            colorTable[(int)KnownColor.InactiveBorder] = unchecked((int)0xffd4d0c8);
            colorTable[(int)KnownColor.InactiveCaption] = unchecked((int)0xff7a96df); 
            colorTable[(int)KnownColor.InactiveCaptionText] = unchecked((int)0xffd8e4f8); 
            colorTable[(int)KnownColor.Info] = unchecked((int)0xffffffe1);
            colorTable[(int)KnownColor.InfoText] = unchecked((int)0xff000000); 
            colorTable[(int)KnownColor.Menu] = unchecked((int)0xffffffff);
            colorTable[(int)KnownColor.MenuBar] = unchecked((int)0x0);
            colorTable[(int)KnownColor.MenuHighlight] = unchecked((int)0x0);
            colorTable[(int)KnownColor.MenuText] = unchecked((int)0xff000000); 
            colorTable[(int)KnownColor.ScrollBar] = unchecked((int)0xffd4d0c8);
            colorTable[(int)KnownColor.Window] = unchecked((int)0xffffffff); 
            colorTable[(int)KnownColor.WindowFrame] = unchecked((int)0xff000000); 
            colorTable[(int)KnownColor.WindowText] = unchecked((int)0xff000000);
#endif // !FEATURE_PAL 
        }
    }
}
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Drawing { 
 
    using System.Runtime.InteropServices;
    using System.Diagnostics; 
    using System;
    using Microsoft.Win32;
#if !FEATURE_PAL
    using System.Drawing.Internal; 
#endif
 
    static internal class KnownColorTable { 
        private static int[] colorTable;
        private static string[] colorNameTable; 

        /**
         * Shift count and bit mask for A, R, G, B components
         */ 
        private const int AlphaShift  = 24;
        private const int RedShift    = 16; 
        private const int GreenShift  = 8; 
        private const int BlueShift   = 0;
 
        private const int Win32RedShift    = 0;
        private const int Win32GreenShift  = 8;
        private const int Win32BlueShift   = 16;
 
        public static Color ArgbToKnownColor(int targetARGB) {
            EnsureColorTable(); 
            for(int index = 0; index < colorTable.Length; ++index) { 
                int argb = colorTable[index];
                if (argb == targetARGB) { 
                    Color color = Color.FromKnownColor((KnownColor)index);
                    if (!color.IsSystemColor)
                        return color;
                } 
            }
 
            return Color.FromArgb(targetARGB); 
        }
 
        private static void EnsureColorTable() {
            // no need to lock... worse case is a double create of the table...
            //
            if (colorTable == null) { 
                InitColorTable();
            } 
        } 

        private static void InitColorTable() { 
            int[] values = new int[((int)KnownColor.MenuHighlight) + 1];

            // system
            // 
#if !FEATURE_PAL
            SystemEvents.UserPreferenceChanging += new UserPreferenceChangingEventHandler(OnUserPreferenceChanging); 
#endif 
            UpdateSystemColors(values);
 
            // just consts...
            //
            values[(int)KnownColor.Transparent] = 0x00FFFFFF;
            values[(int)KnownColor.AliceBlue] = unchecked((int)0xFFF0F8FF); 
            values[(int)KnownColor.AntiqueWhite] = unchecked((int)0xFFFAEBD7);
            values[(int)KnownColor.Aqua] = unchecked((int)0xFF00FFFF); 
            values[(int)KnownColor.Aquamarine] = unchecked((int)0xFF7FFFD4); 
            values[(int)KnownColor.Azure] = unchecked((int)0xFFF0FFFF);
            values[(int)KnownColor.Beige] = unchecked((int)0xFFF5F5DC); 
            values[(int)KnownColor.Bisque] = unchecked(unchecked((int)0xFFFFE4C4));
            values[(int)KnownColor.Black] = unchecked((int)0xFF000000);
            values[(int)KnownColor.BlanchedAlmond] = unchecked((int)0xFFFFEBCD);
            values[(int)KnownColor.Blue] = unchecked((int)0xFF0000FF); 
            values[(int)KnownColor.BlueViolet] = unchecked((int)0xFF8A2BE2);
            values[(int)KnownColor.Brown] = unchecked((int)0xFFA52A2A); 
            values[(int)KnownColor.BurlyWood] = unchecked((int)0xFFDEB887); 
            values[(int)KnownColor.CadetBlue] = unchecked((int)0xFF5F9EA0);
            values[(int)KnownColor.Chartreuse] = unchecked((int)0xFF7FFF00); 
            values[(int)KnownColor.Chocolate] = unchecked((int)0xFFD2691E);
            values[(int)KnownColor.Coral] = unchecked((int)0xFFFF7F50);
            values[(int)KnownColor.CornflowerBlue] = unchecked((int)0xFF6495ED);
            values[(int)KnownColor.Cornsilk] = unchecked((int)0xFFFFF8DC); 
            values[(int)KnownColor.Crimson] = unchecked((int)0xFFDC143C);
            values[(int)KnownColor.Cyan] = unchecked((int)0xFF00FFFF); 
            values[(int)KnownColor.DarkBlue] = unchecked((int)0xFF00008B); 
            values[(int)KnownColor.DarkCyan] = unchecked((int)0xFF008B8B);
            values[(int)KnownColor.DarkGoldenrod] = unchecked((int)0xFFB8860B); 
            values[(int)KnownColor.DarkGray] = unchecked((int)0xFFA9A9A9);
            values[(int)KnownColor.DarkGreen] = unchecked((int)0xFF006400);
            values[(int)KnownColor.DarkKhaki] = unchecked((int)0xFFBDB76B);
            values[(int)KnownColor.DarkMagenta] = unchecked((int)0xFF8B008B); 
            values[(int)KnownColor.DarkOliveGreen] = unchecked((int)0xFF556B2F);
            values[(int)KnownColor.DarkOrange] = unchecked((int)0xFFFF8C00); 
            values[(int)KnownColor.DarkOrchid] = unchecked((int)0xFF9932CC); 
            values[(int)KnownColor.DarkRed] = unchecked((int)0xFF8B0000);
            values[(int)KnownColor.DarkSalmon] = unchecked((int)0xFFE9967A); 
            values[(int)KnownColor.DarkSeaGreen] = unchecked((int)0xFF8FBC8B);
            values[(int)KnownColor.DarkSlateBlue] = unchecked((int)0xFF483D8B);
            values[(int)KnownColor.DarkSlateGray] = unchecked((int)0xFF2F4F4F);
            values[(int)KnownColor.DarkTurquoise] = unchecked((int)0xFF00CED1); 
            values[(int)KnownColor.DarkViolet] = unchecked((int)0xFF9400D3);
            values[(int)KnownColor.DeepPink] = unchecked((int)0xFFFF1493); 
            values[(int)KnownColor.DeepSkyBlue] = unchecked((int)0xFF00BFFF); 
            values[(int)KnownColor.DimGray] = unchecked((int)0xFF696969);
            values[(int)KnownColor.DodgerBlue] = unchecked((int)0xFF1E90FF); 
            values[(int)KnownColor.Firebrick] = unchecked((int)0xFFB22222);
            values[(int)KnownColor.FloralWhite] = unchecked((int)0xFFFFFAF0);
            values[(int)KnownColor.ForestGreen] = unchecked((int)0xFF228B22);
            values[(int)KnownColor.Fuchsia] = unchecked((int)0xFFFF00FF); 
            values[(int)KnownColor.Gainsboro] = unchecked((int)0xFFDCDCDC);
            values[(int)KnownColor.GhostWhite] = unchecked((int)0xFFF8F8FF); 
            values[(int)KnownColor.Gold] = unchecked((int)0xFFFFD700); 
            values[(int)KnownColor.Goldenrod] = unchecked((int)0xFFDAA520);
            values[(int)KnownColor.Gray] = unchecked((int)0xFF808080); 
            values[(int)KnownColor.Green] = unchecked((int)0xFF008000);
            values[(int)KnownColor.GreenYellow] = unchecked((int)0xFFADFF2F);
            values[(int)KnownColor.Honeydew] = unchecked((int)0xFFF0FFF0);
            values[(int)KnownColor.HotPink] = unchecked((int)0xFFFF69B4); 
            values[(int)KnownColor.IndianRed] = unchecked((int)0xFFCD5C5C);
            values[(int)KnownColor.Indigo] = unchecked((int)0xFF4B0082); 
            values[(int)KnownColor.Ivory] = unchecked((int)0xFFFFFFF0); 
            values[(int)KnownColor.Khaki] = unchecked((int)0xFFF0E68C);
            values[(int)KnownColor.Lavender] = unchecked((int)0xFFE6E6FA); 
            values[(int)KnownColor.LavenderBlush] = unchecked((int)0xFFFFF0F5);
            values[(int)KnownColor.LawnGreen] = unchecked((int)0xFF7CFC00);
            values[(int)KnownColor.LemonChiffon] = unchecked((int)0xFFFFFACD);
            values[(int)KnownColor.LightBlue] = unchecked((int)0xFFADD8E6); 
            values[(int)KnownColor.LightCoral] = unchecked((int)0xFFF08080);
            values[(int)KnownColor.LightCyan] = unchecked((int)0xFFE0FFFF); 
            values[(int)KnownColor.LightGoldenrodYellow] = unchecked((int)0xFFFAFAD2); 
            values[(int)KnownColor.LightGray] = unchecked((int)0xFFD3D3D3);
            values[(int)KnownColor.LightGreen] = unchecked((int)0xFF90EE90); 
            values[(int)KnownColor.LightPink] = unchecked((int)0xFFFFB6C1);
            values[(int)KnownColor.LightSalmon] = unchecked((int)0xFFFFA07A);
            values[(int)KnownColor.LightSeaGreen] = unchecked((int)0xFF20B2AA);
            values[(int)KnownColor.LightSkyBlue] = unchecked((int)0xFF87CEFA); 
            values[(int)KnownColor.LightSlateGray] = unchecked((int)0xFF778899);
            values[(int)KnownColor.LightSteelBlue] = unchecked((int)0xFFB0C4DE); 
            values[(int)KnownColor.LightYellow] = unchecked((int)0xFFFFFFE0); 
            values[(int)KnownColor.Lime] = unchecked((int)0xFF00FF00);
            values[(int)KnownColor.LimeGreen] = unchecked((int)0xFF32CD32); 
            values[(int)KnownColor.Linen] = unchecked((int)0xFFFAF0E6);
            values[(int)KnownColor.Magenta] = unchecked((int)0xFFFF00FF);
            values[(int)KnownColor.Maroon] = unchecked((int)0xFF800000);
            values[(int)KnownColor.MediumAquamarine] = unchecked((int)0xFF66CDAA); 
            values[(int)KnownColor.MediumBlue] = unchecked((int)0xFF0000CD);
            values[(int)KnownColor.MediumOrchid] = unchecked((int)0xFFBA55D3); 
            values[(int)KnownColor.MediumPurple] = unchecked((int)0xFF9370DB); 
            values[(int)KnownColor.MediumSeaGreen] = unchecked((int)0xFF3CB371);
            values[(int)KnownColor.MediumSlateBlue] = unchecked((int)0xFF7B68EE); 
            values[(int)KnownColor.MediumSpringGreen] = unchecked((int)0xFF00FA9A);
            values[(int)KnownColor.MediumTurquoise] = unchecked((int)0xFF48D1CC);
            values[(int)KnownColor.MediumVioletRed] = unchecked((int)0xFFC71585);
            values[(int)KnownColor.MidnightBlue] = unchecked((int)0xFF191970); 
            values[(int)KnownColor.MintCream] = unchecked((int)0xFFF5FFFA);
            values[(int)KnownColor.MistyRose] = unchecked((int)0xFFFFE4E1); 
            values[(int)KnownColor.Moccasin] = unchecked((int)0xFFFFE4B5); 
            values[(int)KnownColor.NavajoWhite] = unchecked((int)0xFFFFDEAD);
            values[(int)KnownColor.Navy] = unchecked((int)0xFF000080); 
            values[(int)KnownColor.OldLace] = unchecked((int)0xFFFDF5E6);
            values[(int)KnownColor.Olive] = unchecked((int)0xFF808000);
            values[(int)KnownColor.OliveDrab] = unchecked((int)0xFF6B8E23);
            values[(int)KnownColor.Orange] = unchecked((int)0xFFFFA500); 
            values[(int)KnownColor.OrangeRed] = unchecked((int)0xFFFF4500);
            values[(int)KnownColor.Orchid] = unchecked((int)0xFFDA70D6); 
            values[(int)KnownColor.PaleGoldenrod] = unchecked((int)0xFFEEE8AA); 
            values[(int)KnownColor.PaleGreen] = unchecked((int)0xFF98FB98);
            values[(int)KnownColor.PaleTurquoise] = unchecked((int)0xFFAFEEEE); 
            values[(int)KnownColor.PaleVioletRed] = unchecked((int)0xFFDB7093);
            values[(int)KnownColor.PapayaWhip] = unchecked((int)0xFFFFEFD5);
            values[(int)KnownColor.PeachPuff] = unchecked((int)0xFFFFDAB9);
            values[(int)KnownColor.Peru] = unchecked((int)0xFFCD853F); 
            values[(int)KnownColor.Pink] = unchecked((int)0xFFFFC0CB);
            values[(int)KnownColor.Plum] = unchecked((int)0xFFDDA0DD); 
            values[(int)KnownColor.PowderBlue] = unchecked((int)0xFFB0E0E6); 
            values[(int)KnownColor.Purple] = unchecked((int)0xFF800080);
            values[(int)KnownColor.Red] = unchecked((int)0xFFFF0000); 
            values[(int)KnownColor.RosyBrown] = unchecked((int)0xFFBC8F8F);
            values[(int)KnownColor.RoyalBlue] = unchecked((int)0xFF4169E1);
            values[(int)KnownColor.SaddleBrown] = unchecked((int)0xFF8B4513);
            values[(int)KnownColor.Salmon] = unchecked((int)0xFFFA8072); 
            values[(int)KnownColor.SandyBrown] = unchecked((int)0xFFF4A460);
            values[(int)KnownColor.SeaGreen] = unchecked((int)0xFF2E8B57); 
            values[(int)KnownColor.SeaShell] = unchecked((int)0xFFFFF5EE); 
            values[(int)KnownColor.Sienna] = unchecked((int)0xFFA0522D);
            values[(int)KnownColor.Silver] = unchecked((int)0xFFC0C0C0); 
            values[(int)KnownColor.SkyBlue] = unchecked((int)0xFF87CEEB);
            values[(int)KnownColor.SlateBlue] = unchecked((int)0xFF6A5ACD);
            values[(int)KnownColor.SlateGray] = unchecked((int)0xFF708090);
            values[(int)KnownColor.Snow] = unchecked((int)0xFFFFFAFA); 
            values[(int)KnownColor.SpringGreen] = unchecked((int)0xFF00FF7F);
            values[(int)KnownColor.SteelBlue] = unchecked((int)0xFF4682B4); 
            values[(int)KnownColor.Tan] = unchecked((int)0xFFD2B48C); 
            values[(int)KnownColor.Teal] = unchecked((int)0xFF008080);
            values[(int)KnownColor.Thistle] = unchecked((int)0xFFD8BFD8); 
            values[(int)KnownColor.Tomato] = unchecked((int)0xFFFF6347);
            values[(int)KnownColor.Turquoise] = unchecked((int)0xFF40E0D0);
            values[(int)KnownColor.Violet] = unchecked((int)0xFFEE82EE);
            values[(int)KnownColor.Wheat] = unchecked((int)0xFFF5DEB3); 
            values[(int)KnownColor.White] = unchecked((int)0xFFFFFFFF);
            values[(int)KnownColor.WhiteSmoke] = unchecked((int)0xFFF5F5F5); 
            values[(int)KnownColor.Yellow] = unchecked((int)0xFFFFFF00); 
            values[(int)KnownColor.YellowGreen] = unchecked((int)0xFF9ACD32);
            colorTable = values; 
        }

        private static void EnsureColorNameTable() {
            // no need to lock... worse case is a double create of the table... 
            //
            if (colorNameTable == null) { 
                InitColorNameTable(); 
            }
        } 

        private static void InitColorNameTable() {
            string[] values = new string[((int)KnownColor.MenuHighlight) + 1];
 
            // just consts...
            // 
            values[(int)KnownColor.ActiveBorder] = "ActiveBorder"; 
            values[(int)KnownColor.ActiveCaption] = "ActiveCaption";
            values[(int)KnownColor.ActiveCaptionText] = "ActiveCaptionText"; 
            values[(int)KnownColor.AppWorkspace] = "AppWorkspace";
            values[(int)KnownColor.ButtonFace] = "ButtonFace";
            values[(int)KnownColor.ButtonHighlight] = "ButtonHighlight";
            values[(int)KnownColor.ButtonShadow] = "ButtonShadow"; 
            values[(int)KnownColor.Control] = "Control";
            values[(int)KnownColor.ControlDark] = "ControlDark"; 
            values[(int)KnownColor.ControlDarkDark] = "ControlDarkDark"; 
            values[(int)KnownColor.ControlLight] = "ControlLight";
            values[(int)KnownColor.ControlLightLight] = "ControlLightLight"; 
            values[(int)KnownColor.ControlText] = "ControlText";
            values[(int)KnownColor.Desktop] = "Desktop";
            values[(int)KnownColor.GradientActiveCaption] = "GradientActiveCaption";
            values[(int)KnownColor.GradientInactiveCaption] = "GradientInactiveCaption"; 
            values[(int)KnownColor.GrayText] = "GrayText";
            values[(int)KnownColor.Highlight] = "Highlight"; 
            values[(int)KnownColor.HighlightText] = "HighlightText"; 
            values[(int)KnownColor.HotTrack] = "HotTrack";
            values[(int)KnownColor.InactiveBorder] = "InactiveBorder"; 
            values[(int)KnownColor.InactiveCaption] = "InactiveCaption";
            values[(int)KnownColor.InactiveCaptionText] = "InactiveCaptionText";
            values[(int)KnownColor.Info] = "Info";
            values[(int)KnownColor.InfoText] = "InfoText"; 
            values[(int)KnownColor.Menu] = "Menu";
            values[(int)KnownColor.MenuBar] = "MenuBar"; 
            values[(int)KnownColor.MenuHighlight] = "MenuHighlight"; 
            values[(int)KnownColor.MenuText] = "MenuText";
            values[(int)KnownColor.ScrollBar] = "ScrollBar"; 
            values[(int)KnownColor.Window] = "Window";
            values[(int)KnownColor.WindowFrame] = "WindowFrame";
            values[(int)KnownColor.WindowText] = "WindowText";
 
            values[(int)KnownColor.Transparent] = "Transparent";
            values[(int)KnownColor.AliceBlue] = "AliceBlue"; 
            values[(int)KnownColor.AntiqueWhite] = "AntiqueWhite"; 
            values[(int)KnownColor.Aqua] = "Aqua";
            values[(int)KnownColor.Aquamarine] = "Aquamarine"; 
            values[(int)KnownColor.Azure] = "Azure";
            values[(int)KnownColor.Beige] = "Beige";
            values[(int)KnownColor.Bisque] = "Bisque";
            values[(int)KnownColor.Black] = "Black"; 
            values[(int)KnownColor.BlanchedAlmond] = "BlanchedAlmond";
            values[(int)KnownColor.Blue] = "Blue"; 
            values[(int)KnownColor.BlueViolet] = "BlueViolet"; 
            values[(int)KnownColor.Brown] = "Brown";
            values[(int)KnownColor.BurlyWood] = "BurlyWood"; 
            values[(int)KnownColor.CadetBlue] = "CadetBlue";
            values[(int)KnownColor.Chartreuse] = "Chartreuse";
            values[(int)KnownColor.Chocolate] = "Chocolate";
            values[(int)KnownColor.Coral] = "Coral"; 
            values[(int)KnownColor.CornflowerBlue] = "CornflowerBlue";
            values[(int)KnownColor.Cornsilk] = "Cornsilk"; 
            values[(int)KnownColor.Crimson] = "Crimson"; 
            values[(int)KnownColor.Cyan] = "Cyan";
            values[(int)KnownColor.DarkBlue] = "DarkBlue"; 
            values[(int)KnownColor.DarkCyan] = "DarkCyan";
            values[(int)KnownColor.DarkGoldenrod] = "DarkGoldenrod";
            values[(int)KnownColor.DarkGray] = "DarkGray";
            values[(int)KnownColor.DarkGreen] = "DarkGreen"; 
            values[(int)KnownColor.DarkKhaki] = "DarkKhaki";
            values[(int)KnownColor.DarkMagenta] = "DarkMagenta"; 
            values[(int)KnownColor.DarkOliveGreen] = "DarkOliveGreen"; 
            values[(int)KnownColor.DarkOrange] = "DarkOrange";
            values[(int)KnownColor.DarkOrchid] = "DarkOrchid"; 
            values[(int)KnownColor.DarkRed] = "DarkRed";
            values[(int)KnownColor.DarkSalmon] = "DarkSalmon";
            values[(int)KnownColor.DarkSeaGreen] = "DarkSeaGreen";
            values[(int)KnownColor.DarkSlateBlue] = "DarkSlateBlue"; 
            values[(int)KnownColor.DarkSlateGray] = "DarkSlateGray";
            values[(int)KnownColor.DarkTurquoise] = "DarkTurquoise"; 
            values[(int)KnownColor.DarkViolet] = "DarkViolet"; 
            values[(int)KnownColor.DeepPink] = "DeepPink";
            values[(int)KnownColor.DeepSkyBlue] = "DeepSkyBlue"; 
            values[(int)KnownColor.DimGray] = "DimGray";
            values[(int)KnownColor.DodgerBlue] = "DodgerBlue";
            values[(int)KnownColor.Firebrick] = "Firebrick";
            values[(int)KnownColor.FloralWhite] = "FloralWhite"; 
            values[(int)KnownColor.ForestGreen] = "ForestGreen";
            values[(int)KnownColor.Fuchsia] = "Fuchsia"; 
            values[(int)KnownColor.Gainsboro] = "Gainsboro"; 
            values[(int)KnownColor.GhostWhite] = "GhostWhite";
            values[(int)KnownColor.Gold] = "Gold"; 
            values[(int)KnownColor.Goldenrod] = "Goldenrod";
            values[(int)KnownColor.Gray] = "Gray";
            values[(int)KnownColor.Green] = "Green";
            values[(int)KnownColor.GreenYellow] = "GreenYellow"; 
            values[(int)KnownColor.Honeydew] = "Honeydew";
            values[(int)KnownColor.HotPink] = "HotPink"; 
            values[(int)KnownColor.IndianRed] = "IndianRed"; 
            values[(int)KnownColor.Indigo] = "Indigo";
            values[(int)KnownColor.Ivory] = "Ivory"; 
            values[(int)KnownColor.Khaki] = "Khaki";
            values[(int)KnownColor.Lavender] = "Lavender";
            values[(int)KnownColor.LavenderBlush] = "LavenderBlush";
            values[(int)KnownColor.LawnGreen] = "LawnGreen"; 
            values[(int)KnownColor.LemonChiffon] = "LemonChiffon";
            values[(int)KnownColor.LightBlue] = "LightBlue"; 
            values[(int)KnownColor.LightCoral] = "LightCoral"; 
            values[(int)KnownColor.LightCyan] = "LightCyan";
            values[(int)KnownColor.LightGoldenrodYellow] = "LightGoldenrodYellow"; 
            values[(int)KnownColor.LightGray] = "LightGray";
            values[(int)KnownColor.LightGreen] = "LightGreen";
            values[(int)KnownColor.LightPink] = "LightPink";
            values[(int)KnownColor.LightSalmon] = "LightSalmon"; 
            values[(int)KnownColor.LightSeaGreen] = "LightSeaGreen";
            values[(int)KnownColor.LightSkyBlue] = "LightSkyBlue"; 
            values[(int)KnownColor.LightSlateGray] = "LightSlateGray"; 
            values[(int)KnownColor.LightSteelBlue] = "LightSteelBlue";
            values[(int)KnownColor.LightYellow] = "LightYellow"; 
            values[(int)KnownColor.Lime] = "Lime";
            values[(int)KnownColor.LimeGreen] = "LimeGreen";
            values[(int)KnownColor.Linen] = "Linen";
            values[(int)KnownColor.Magenta] = "Magenta"; 
            values[(int)KnownColor.Maroon] = "Maroon";
            values[(int)KnownColor.MediumAquamarine] = "MediumAquamarine"; 
            values[(int)KnownColor.MediumBlue] = "MediumBlue"; 
            values[(int)KnownColor.MediumOrchid] = "MediumOrchid";
            values[(int)KnownColor.MediumPurple] = "MediumPurple"; 
            values[(int)KnownColor.MediumSeaGreen] = "MediumSeaGreen";
            values[(int)KnownColor.MediumSlateBlue] = "MediumSlateBlue";
            values[(int)KnownColor.MediumSpringGreen] = "MediumSpringGreen";
            values[(int)KnownColor.MediumTurquoise] = "MediumTurquoise"; 
            values[(int)KnownColor.MediumVioletRed] = "MediumVioletRed";
            values[(int)KnownColor.MidnightBlue] = "MidnightBlue"; 
            values[(int)KnownColor.MintCream] = "MintCream"; 
            values[(int)KnownColor.MistyRose] = "MistyRose";
            values[(int)KnownColor.Moccasin] = "Moccasin"; 
            values[(int)KnownColor.NavajoWhite] = "NavajoWhite";
            values[(int)KnownColor.Navy] = "Navy";
            values[(int)KnownColor.OldLace] = "OldLace";
            values[(int)KnownColor.Olive] = "Olive"; 
            values[(int)KnownColor.OliveDrab] = "OliveDrab";
            values[(int)KnownColor.Orange] = "Orange"; 
            values[(int)KnownColor.OrangeRed] = "OrangeRed"; 
            values[(int)KnownColor.Orchid] = "Orchid";
            values[(int)KnownColor.PaleGoldenrod] = "PaleGoldenrod"; 
            values[(int)KnownColor.PaleGreen] = "PaleGreen";
            values[(int)KnownColor.PaleTurquoise] = "PaleTurquoise";
            values[(int)KnownColor.PaleVioletRed] = "PaleVioletRed";
            values[(int)KnownColor.PapayaWhip] = "PapayaWhip"; 
            values[(int)KnownColor.PeachPuff] = "PeachPuff";
            values[(int)KnownColor.Peru] = "Peru"; 
            values[(int)KnownColor.Pink] = "Pink"; 
            values[(int)KnownColor.Plum] = "Plum";
            values[(int)KnownColor.PowderBlue] = "PowderBlue"; 
            values[(int)KnownColor.Purple] = "Purple";
            values[(int)KnownColor.Red] = "Red";
            values[(int)KnownColor.RosyBrown] = "RosyBrown";
            values[(int)KnownColor.RoyalBlue] = "RoyalBlue"; 
            values[(int)KnownColor.SaddleBrown] = "SaddleBrown";
            values[(int)KnownColor.Salmon] = "Salmon"; 
            values[(int)KnownColor.SandyBrown] = "SandyBrown"; 
            values[(int)KnownColor.SeaGreen] = "SeaGreen";
            values[(int)KnownColor.SeaShell] = "SeaShell"; 
            values[(int)KnownColor.Sienna] = "Sienna";
            values[(int)KnownColor.Silver] = "Silver";
            values[(int)KnownColor.SkyBlue] = "SkyBlue";
            values[(int)KnownColor.SlateBlue] = "SlateBlue"; 
            values[(int)KnownColor.SlateGray] = "SlateGray";
            values[(int)KnownColor.Snow] = "Snow"; 
            values[(int)KnownColor.SpringGreen] = "SpringGreen"; 
            values[(int)KnownColor.SteelBlue] = "SteelBlue";
            values[(int)KnownColor.Tan] = "Tan"; 
            values[(int)KnownColor.Teal] = "Teal";
            values[(int)KnownColor.Thistle] = "Thistle";
            values[(int)KnownColor.Tomato] = "Tomato";
            values[(int)KnownColor.Turquoise] = "Turquoise"; 
            values[(int)KnownColor.Violet] = "Violet";
            values[(int)KnownColor.Wheat] = "Wheat"; 
            values[(int)KnownColor.White] = "White"; 
            values[(int)KnownColor.WhiteSmoke] = "WhiteSmoke";
            values[(int)KnownColor.Yellow] = "Yellow"; 
            values[(int)KnownColor.YellowGreen] = "YellowGreen";
            colorNameTable = values;
        }
 
        public static int KnownColorToArgb(KnownColor color) {
            EnsureColorTable(); 
            if (color <= KnownColor.MenuHighlight) { 
                return colorTable[(int)color];
            } 
            else {
                return 0;
            }
        } 

        public static string KnownColorToName(KnownColor color) { 
            EnsureColorNameTable(); 
            if (color <= KnownColor.MenuHighlight) {
                return colorNameTable[(int)color]; 
            }
            else {
                return null;
            } 
        }
#if !FEATURE_PAL 
        private static int SystemColorToArgb(int index) { 
            return FromWin32Value(SafeNativeMethods.GetSysColor(index));
        } 

        private static int Encode(int alpha, int red, int green, int blue) {
            return red << RedShift | green << GreenShift | blue << BlueShift | alpha << AlphaShift;
        } 

        private static int FromWin32Value(int value) { 
            return Encode(255, 
                          (value >> Win32RedShift) & 0xFF,
                          (value >> Win32GreenShift) & 0xFF, 
                          (value >> Win32BlueShift) & 0xFF);
        }

        private static void OnUserPreferenceChanging(object sender, UserPreferenceChangingEventArgs e) { 
            if (e.Category == UserPreferenceCategory.Color && colorTable != null) {
                UpdateSystemColors(colorTable); 
            } 
        }
#endif // !FEATURE_PAL 

        private static void UpdateSystemColors(int[] colorTable) {
#if !FEATURE_PAL
            colorTable[(int)KnownColor.ActiveBorder] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ActiveBorder); 
            colorTable[(int)KnownColor.ActiveCaption] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ActiveCaption);
            colorTable[(int)KnownColor.ActiveCaptionText] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ActiveCaptionText); 
            colorTable[(int)KnownColor.AppWorkspace] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.AppWorkspace); 
            colorTable[(int)KnownColor.ButtonFace] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ButtonFace);
            colorTable[(int)KnownColor.ButtonHighlight] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ButtonHighlight); 
            colorTable[(int)KnownColor.ButtonShadow] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ButtonShadow);
            colorTable[(int)KnownColor.Control] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.Control);
            colorTable[(int)KnownColor.ControlDark] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ControlDark);
            colorTable[(int)KnownColor.ControlDarkDark] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ControlDarkDark); 
            colorTable[(int)KnownColor.ControlLight] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ControlLight);
            colorTable[(int)KnownColor.ControlLightLight] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ControlLightLight); 
            colorTable[(int)KnownColor.ControlText] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ControlText); 
            colorTable[(int)KnownColor.Desktop] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.Desktop);
            colorTable[(int)KnownColor.GradientActiveCaption] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.GradientActiveCaption); 
            colorTable[(int)KnownColor.GradientInactiveCaption] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.GradientInactiveCaption);
            colorTable[(int)KnownColor.GrayText] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.GrayText);
            colorTable[(int)KnownColor.Highlight] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.Highlight);
            colorTable[(int)KnownColor.HighlightText] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.HighlightText); 
            colorTable[(int)KnownColor.HotTrack] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.HotTrack);
            colorTable[(int)KnownColor.InactiveBorder] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.InactiveBorder); 
            colorTable[(int)KnownColor.InactiveCaption] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.InactiveCaption); 
            colorTable[(int)KnownColor.InactiveCaptionText] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.InactiveCaptionText);
            colorTable[(int)KnownColor.Info] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.Info); 
            colorTable[(int)KnownColor.InfoText] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.InfoText);
            colorTable[(int)KnownColor.Menu] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.Menu);
            colorTable[(int)KnownColor.MenuBar] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.MenuBar);
            colorTable[(int)KnownColor.MenuHighlight] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.MenuHighlight); 
            colorTable[(int)KnownColor.MenuText] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.MenuText);
            colorTable[(int)KnownColor.ScrollBar] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.ScrollBar); 
            colorTable[(int)KnownColor.Window] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.Window); 
            colorTable[(int)KnownColor.WindowFrame] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.WindowFrame);
            colorTable[(int)KnownColor.WindowText] = SystemColorToArgb((int)SafeNativeMethods.Win32SystemColors.WindowText); 
#else
            // Colors from a default XP desktop for use by UI designers in ASP.NET: [....]
            colorTable[(int)KnownColor.ActiveBorder] = unchecked((int)0xffd4d0c8);
            colorTable[(int)KnownColor.ActiveCaption] = unchecked((int)0xff0054e3); 
            colorTable[(int)KnownColor.ActiveCaptionText] = unchecked((int)0xffffffff);
            colorTable[(int)KnownColor.AppWorkspace] = unchecked((int)0xff808080); 
            colorTable[(int)KnownColor.ButtonFace] = unchecked((int)0x0); 
            colorTable[(int)KnownColor.ButtonHighlight] = unchecked((int)0x0);
            colorTable[(int)KnownColor.ButtonShadow] = unchecked((int)0x0); 
            colorTable[(int)KnownColor.Control] = unchecked((int)0xffece9d8);
            colorTable[(int)KnownColor.ControlDark] = unchecked((int)0xffaca899);
            colorTable[(int)KnownColor.ControlDarkDark] = unchecked((int)0xff716f64);
            colorTable[(int)KnownColor.ControlLight] = unchecked((int)0xfff1efe2); 
            colorTable[(int)KnownColor.ControlLightLight] = unchecked((int)0xffffffff);
            colorTable[(int)KnownColor.ControlText] = unchecked((int)0xff000000); 
            colorTable[(int)KnownColor.Desktop] = unchecked((int)0xff004e98); 
            colorTable[(int)KnownColor.GradientActiveCaption] = unchecked((int)0x0);
            colorTable[(int)KnownColor.GradientInactiveCaption] = unchecked((int)0x0); 
            colorTable[(int)KnownColor.GrayText] = unchecked((int)0xffaca899);
            colorTable[(int)KnownColor.Highlight] = unchecked((int)0xff316ac5);
            colorTable[(int)KnownColor.HighlightText] = unchecked((int)0xffffffff);
            colorTable[(int)KnownColor.HotTrack] = unchecked((int)0xff000080); 
            colorTable[(int)KnownColor.InactiveBorder] = unchecked((int)0xffd4d0c8);
            colorTable[(int)KnownColor.InactiveCaption] = unchecked((int)0xff7a96df); 
            colorTable[(int)KnownColor.InactiveCaptionText] = unchecked((int)0xffd8e4f8); 
            colorTable[(int)KnownColor.Info] = unchecked((int)0xffffffe1);
            colorTable[(int)KnownColor.InfoText] = unchecked((int)0xff000000); 
            colorTable[(int)KnownColor.Menu] = unchecked((int)0xffffffff);
            colorTable[(int)KnownColor.MenuBar] = unchecked((int)0x0);
            colorTable[(int)KnownColor.MenuHighlight] = unchecked((int)0x0);
            colorTable[(int)KnownColor.MenuText] = unchecked((int)0xff000000); 
            colorTable[(int)KnownColor.ScrollBar] = unchecked((int)0xffd4d0c8);
            colorTable[(int)KnownColor.Window] = unchecked((int)0xffffffff); 
            colorTable[(int)KnownColor.WindowFrame] = unchecked((int)0xff000000); 
            colorTable[(int)KnownColor.WindowText] = unchecked((int)0xff000000);
#endif // !FEATURE_PAL 
        }
    }
}
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

                        

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