我用VB写的记事本代码（仿微软的）

Public Class Form1

  
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        撤销.Enabled = False
        剪切.Enabled = False
        复制.Enabled = False
        粘贴.Enabled = False
        删除.Enabled = False
        查找.Enabled = False
        查找下一个.Enabled = False
        转到.Enabled = False
        状态栏.Enabled = False
    End Sub

    Private Sub Form1_Resize(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Resize
        TextBox1.Width = Me.Width - 10
        TextBox1.Height = Me.Height - 10
    End Sub

    Private Sub TextBox1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBox1.Click
        TextBox1.Focus()
    End Sub

    Private Sub TextBox1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles TextBox1.MouseDown
        撤销.Enabled = True
        剪切.Enabled = True
        复制.Enabled = True
        粘贴.Enabled = True
        删除.Enabled = True
        查找.Enabled = True
        查找下一个.Enabled = True
    End Sub

    Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
        撤销.Enabled = True
        查找.Enabled = True
        查找下一个.Enabled = True
    End Sub

    Private Sub 撤销_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 撤销.Click
        TextBox1.Text = ""
    End Sub

    Private Sub 自动换行_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 自动换行.Click
        自动换行.Checked = True

    End Sub
  
   
    Private Sub 新建_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 新建.Click
        TextBox1.Text = ""
    End Sub

    Private Sub 打开_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 打开.Click
        OpenFileDialog1.ShowDialog()
    End Sub

    Private Sub 另存为_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 另存为.Click
        SaveFileDialog1.ShowDialog()
    End Sub

    Private Sub 保存_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 保存.Click
        SaveFileDialog1.ShowDialog()
    End Sub

    Private Sub 退出_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 退出.Click
        End
    End Sub

    Private Sub 复制_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 复制.Click
        TextBox1.Copy()
    End Sub

    Private Sub 粘贴_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 粘贴.Click
        TextBox1.Paste()
    End Sub

    Private Sub 删除_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 删除.Click
        TextBox1.SelectAll()

        TextBox1.text=""
    End Sub

    Private Sub 时间日期_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 时间日期.Click
        TextBox1.Text = Format(Now, "yyy-MM-dd hh:mm:ss")
    End Sub

    Private Sub 字体_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 字体.Click
        FontDialog1.ShowDialog()
    End Sub

  
   Private Sub 剪切_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 剪切.Click
        TextBox1.Cut()
    End Sub

    Private Sub 全选_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 全选.Click
        TextBox1.SelectAll()
    End Sub
End Class