public static void SetFontSize(this EnvDTE.DTE dte, DependencyObject view) { Contract.Requires(dte != null); Contract.Requires(view != null); const string CATEGORY_FONTS_AND_COLORS = "FontsAndColors"; const string PAGE_TEXT_EDITOR = "TextEditor"; const string PROPERTY_FONT_SIZE = "FontSize"; try { var fontSize = dte.Maybe() .Select(x => x.Properties[CATEGORY_FONTS_AND_COLORS, PAGE_TEXT_EDITOR]) .Select(x => x.Item(PROPERTY_FONT_SIZE)) .Select(x => x.Value) .Return(x => Convert.ToDouble(x, CultureInfo.InvariantCulture)); if (fontSize > 1) { // Default in VS is 10, but looks like 12 in WPF view.SetValue(Appearance.TextFontSizeProperty, fontSize * 1.2); } } catch { } }