Imports System.Drawing
Imports System.Windows.Forms
public class RichTextBoxRedoUndo
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class
Public Class Form1
Private Sub rchNotes_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles rchNotes.TextChanged
btnUndo.Enabled = rchNotes.CanUndo
btnRedo.Enabled = rchNotes.CanRedo
If btnUndo.Enabled Then
btnUndo.Text = "Undo " & rchNotes.UndoActionName
Else
btnUndo.Text = "Undo"
End If
If btnRedo.Enabled Then
If btnRedo.Enabled Then btnRedo.Text = "Redo " & rchNotes.RedoActionName
Else
If btnRedo.Enabled Then btnRedo.Text = "Redo"
End If
End Sub
Private Sub btnUndo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUndo.Click
rchNotes.Undo()
End Sub
Private Sub btnRedo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRedo.Click
rchNotes.Redo()
End Sub
Private Sub btnRed_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRed.Click
rchNotes.SelectionColor = Color.Red
End Sub
Private Sub btnBlue_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnBlue.Click
rchNotes.SelectionColor = Color.Blue
End Sub
End Class
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Public Class Form1
Inherits System.Windows.Forms.Form
'Form overrides dispose to clean up the component list.
<System.Diagnostics.DebuggerNonUserCode()> _
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing AndAlso components IsNot Nothing Then
components.Dispose()
End If
MyBase.Dispose(disposing)
End Sub
'Required by the Windows Form Designer
Private components As System.ComponentModel.IContainer
'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
<System.Diagnostics.DebuggerStepThrough()> _
Private Sub InitializeComponent()
Me.MenuStrip1 = New System.Windows.Forms.MenuStrip
Me.btnUndo = New System.Windows.Forms.ToolStripMenuItem
Me.btnRedo = New System.Windows.Forms.ToolStripMenuItem
Me.btnRed = New System.Windows.Forms.ToolStripMenuItem
Me.btnBlue = New System.Windows.Forms.ToolStripMenuItem
Me.rchNotes = New System.Windows.Forms.RichTextBox
Me.MenuStrip1.SuspendLayout()
Me.SuspendLayout()
'
'MenuStrip1
'
Me.MenuStrip1.Items.AddRange(New System.Windows.Forms.ToolStripItem() {Me.btnUndo, Me.btnRedo, Me.btnRed, Me.btnBlue})
Me.MenuStrip1.Location = New System.Drawing.Point(0, 0)
Me.MenuStrip1.Name = "MenuStrip1"
Me.MenuStrip1.Size = New System.Drawing.Size(374, 24)
Me.MenuStrip1.TabIndex = 5
Me.MenuStrip1.Text = "MenuStrip1"
'
'btnUndo
'
Me.btnUndo.Enabled = False
Me.btnUndo.Name = "btnUndo"
Me.btnUndo.Text = "Undo"
'
'btnRedo
'
Me.btnRedo.Enabled = False
Me.btnRedo.Name = "btnRedo"
Me.btnRedo.Text = "Redo"
'
'btnRed
'
Me.btnRed.Name = "btnRed"
Me.btnRed.Text = "Red"
'
'btnBlue
'
Me.btnBlue.Name = "btnBlue"
Me.btnBlue.Text = "Blue"
'
'rchNotes
'
Me.rchNotes.Dock = System.Windows.Forms.DockStyle.Fill
Me.rchNotes.Location = New System.Drawing.Point(0, 24)
Me.rchNotes.Name = "rchNotes"
Me.rchNotes.Size = New System.Drawing.Size(374, 249)
Me.rchNotes.TabIndex = 6
Me.rchNotes.Text = ""
'
'Form1
'
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.ClientSize = New System.Drawing.Size(374, 273)
Me.Controls.Add(Me.rchNotes)
Me.Controls.Add(Me.MenuStrip1)
Me.Name = "Form1"
Me.Text = "UseRichTextBox"
Me.MenuStrip1.ResumeLayout(False)
Me.ResumeLayout(False)
Me.PerformLayout()
End Sub
Friend WithEvents MenuStrip1 As System.Windows.Forms.MenuStrip
Friend WithEvents btnUndo As System.Windows.Forms.ToolStripMenuItem
Friend WithEvents btnRedo As System.Windows.Forms.ToolStripMenuItem
Friend WithEvents btnRed As System.Windows.Forms.ToolStripMenuItem
Friend WithEvents btnBlue As System.Windows.Forms.ToolStripMenuItem
Friend WithEvents rchNotes As System.Windows.Forms.RichTextBox
End Class
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