Office 2010 AddIn development - Can I from code-behind read what theme the user is using?

Question

PowerPoint 2010 comes with three default themes, silver, black and blue. Is it possible to check which theme the user is currently using from code-behind?

Answer 1

I use this code to setup colours for my interface depending on what theme is set.

public static class LFTheme 
    {
        const int ThemeClassic = 0;
        const int ThemeBlue = 1;
        const int ThemeSilver = 2;
        const int ThemeBlack = 3;

        public static int Theme { get; set; }
        public static Color BackColor { get; set; }
        public static Color ForeColor { get; set; }
        public static Color ForeColorLight { get; set; }
        public static Color ForeColorDark { get; set; }
        public static Color TextColor { get; set; }
        public static System.Drawing.Font Font { get; set; }

        public static Excel.Application ExcelApp { get; set; }
        public static Double ExcelVersion { get; set; }

        static LFTheme()
        {
            InitLook();
        }


     public static void InitLook()
            {
                const string OfficeCommonKey = @"Software\Microsoft\Office\{0:0.0}\Common";
                const string OfficeThemeValueName = "Theme";

                Theme = 0;
                BackColor = System.Windows.Forms.Control.DefaultBackColor;
                ForeColor = System.Drawing.SystemColors.Control;
                ForeColorLight = System.Drawing.SystemColors.ControlLight;
                ForeColorDark = System.Drawing.SystemColors.ControlDark;
                TextColor = System.Drawing.SystemColors.ControlText;
                Font = System.Windows.Forms.Control.DefaultFont;

                if (ExcelVersion<12.0)
                    return;

                using (RegistryKey key = Registry.CurrentUser.OpenSubKey(String.Format(OfficeCommonKey, ExcelVersion), false))
                {
                    try
                    {
                        Theme = (int)key.GetValue(OfficeThemeValueName);
                    }
                    catch (Exception ex)
                    {
                        Theme = ThemeClassic;
                        if (ExcelVersion >= 12.0)
                        {
                            Theme = ThemeBlue;
                        }
                    }

                    switch (Theme)
                    {
                        case ThemeBlue:
                            BackColor = Color.FromArgb(255, 213, 228, 242);
                            ForeColor = Color.FromArgb(255, 107, 160, 209);
                            ForeColorLight = Color.FromArgb(255, 185, 210, 234);
                            ForeColorDark = Color.FromArgb(255, 87, 149, 204);
                            TextColor = Color.FromArgb(255, 50, 108, 160);
                            Font = new System.Drawing.Font("Segoe UI", 8F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
                            break;

                        case ThemeSilver:
                            BackColor = Color.FromArgb(255, 232, 236, 243);
                            ForeColor = Color.FromArgb(255, 158, 162, 161);
                            ForeColorLight = Color.FromArgb(255, 200, 206, 205);
                            ForeColorDark = Color.FromArgb(255, 128, 133, 131);
                            TextColor = Color.FromArgb(255, 116, 118, 123);
                            Font = new System.Drawing.Font("Segoe UI", 8F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
                            break;

                        case ThemeBlack:
                            BackColor = Color.FromArgb(255, 83, 83, 83);
                            ForeColor = Color.FromArgb(255, 168, 170, 170);
                            ForeColorLight = Color.FromArgb(255, 188, 190, 190);
                            ForeColorDark = Color.FromArgb(255, 148, 150, 150);
                            TextColor = Color.FromArgb(255, 224, 226, 226);
                            Font = new System.Drawing.Font("Segoe UI", 8F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
                            break;

                        default:                    
                            break;
                    }
                }
            }


}