![](dotnetdiagramimages/C1_WPF_RichTextBox_Ribbon_C1_WPF_RichTextBox_Ribbon_C1LeftAlignTool.png)
'Declaration
Public Class C1LeftAlignTool Inherits C1.WPF.RichTextBox.Ribbon.RichTextBoxToggleButtonTool(Of Nullable(Of C1TextAlignment)) Implements IUpdateableTool
public class C1LeftAlignTool : C1.WPF.RichTextBox.Ribbon.RichTextBoxToggleButtonTool<Nullable<C1TextAlignment>>, IUpdateableTool
System.Object
System.Windows.Threading.DispatcherObject
System.Windows.DependencyObject
System.Windows.Media.Visual
System.Windows.UIElement
System.Windows.FrameworkElement
System.Windows.Controls.Control
C1.WPF.Core.C1View
C1.WPF.Ribbon.C1Tool
C1.WPF.Ribbon.C1ToggleButtonTool
C1.WPF.RichTextBox.Ribbon.RichTextBoxToggleButtonTool<T>
C1.WPF.RichTextBox.Ribbon.C1LeftAlignTool