'宣言 Public Class C1UnderlineTool Inherits C1.WPF.RichTextBox.Ribbon.RichTextBoxToggleButtonTool(Of C1TextDecorationCollection) Implements IUpdateableTool
public class C1UnderlineTool : C1.WPF.RichTextBox.Ribbon.RichTextBoxToggleButtonTool<C1TextDecorationCollection>, IUpdateableTool