续上一节，主要代码如下：
Public Class Form3
Dim FontName As String
Dim FontSize As Integer
Private Sub Form3_Load(sender As Object,e As EventArgs) Handles MyBase.Load
FontName = "宋体"
FontSize = 10
ToolStripComboBox1.Text = ToolStripComboBox1.Items(0)
ToolStripComboBox2.Text = "10"
End Sub
'撤销
Private Sub ToolStripButton11_Click(sender As Object,e As EventArgs) Handles ToolStripButton11.Click
RichTextBox1.Undo()
End Sub
'重做
Private Sub ToolStripButton12_Click(sender As Object,e As EventArgs) Handles ToolStripButton12.Click
RichTextBox1.Redo()
End Sub
'设置文字颜色
Private Sub ToolStripButton1_Click(sender As Object,e As EventArgs) Handles ToolStripButton1.Click
If ColorDialog1.ShowDialog() = DialogResult.OK Then
RichTextBox1.SelectionColor = ColorDialog1.Color
End If
End Sub
'设置文字背景色
Private Sub ToolStripButton2_Click(sender As Object,e As EventArgs) Handles ToolStripButton2.Click
If ColorDialog1.ShowDialog() = DialogResult.OK Then
RichTextBox1.SelectionBackColor = ColorDialog1.Color
End If
End Sub
'设置文字字体
Private Sub ToolStripComboBox1_TextChanged(sender As Object,e As EventArgs) Handles ToolStripComboBox1.SelectedIndexChanged
FontName = ToolStripComboBox1.Text
RichTextBox1.SelectionFont = New Font(FontName,FontSize)
End Sub
'设置文字大小
Private Sub ToolStripComboBox2_TextChanged(sender As Object,e As EventArgs) Handles ToolStripComboBox2.TextChanged
FontSize = ToolStripComboBox2.Text
RichTextBox1.SelectionFont = New Font(FontName,FontSize)
End Sub
'设置粗体
Private Sub ToolStripButton7_Click(sender As Object,e As EventArgs) Handles ToolStripButton7.Click
Dim selFontName As String = RichTextBox1.SelectionFont.Name
Dim selFontSize As Integer = RichTextBox1.SelectionFont.Size
Dim selFontStyle As FontStyle = RichTextBox1.SelectionFont.Style Xor FontStyle.Bold
RichTextBox1.SelectionFont = New Font(selFontName,selFontSize,selFontStyle)
End Sub
'设置斜体
Private Sub ToolStripButton8_Click(sender As Object,e As EventArgs) Handles ToolStripButton8.Click
Dim selFontName As String = RichTextBox1.SelectionFont.Name
Dim selFontSize As Integer = RichTextBox1.SelectionFont.Size
Dim selFontStyle As FontStyle = RichTextBox1.SelectionFont.Style Xor FontStyle.Italic
RichTextBox1.SelectionFont = New Font(selFontName,selFontStyle)
End Sub
'设置下划线
Private Sub ToolStripButton9_Click(sender As Object,e As EventArgs) Handles ToolStripButton9.Click
Dim selFontName As String = RichTextBox1.SelectionFont.Name
Dim selFontSize As Integer = RichTextBox1.SelectionFont.Size
Dim selFontStyle As FontStyle = RichTextBox1.SelectionFont.Style Xor FontStyle.Underline
RichTextBox1.SelectionFont = New Font(selFontName,selFontStyle)
End Sub
'左对齐
Private Sub ToolStripButton4_Click(sender As Object,e As EventArgs) Handles ToolStripButton4.Click
RichTextBox1.SelectionAlignment = HorizontalAlignment.Left
End Sub
'居中对齐
Private Sub ToolStripButton5_Click(sender As Object,e As EventArgs) Handles ToolStripButton5.Click
RichTextBox1.SelectionAlignment = HorizontalAlignment.Center
End Sub
'右对齐
Private Sub ToolStripButton3_Click(sender As Object,e As EventArgs) Handles ToolStripButton3.Click
RichTextBox1.SelectionAlignment = HorizontalAlignment.Right
End Sub
'设置富文本框背景色
Private Sub ToolStripButton6_Click(sender As Object,e As EventArgs) Handles ToolStripButton6.Click
If ColorDialog1.ShowDialog() = DialogResult.OK Then
RichTextBox1.BackColor = ColorDialog1.Color
End If
End Sub
'插入图片
Private Sub ToolStripButton10_Click(sender As Object,e As EventArgs) Handles ToolStripButton10.Click
Dim imgFile As String
If OpenFileDialog2.ShowDialog = DialogResult.OK Then
imgFile = OpenFileDialog2.FileName
Else
Exit Sub
End If
Dim bmp As Bitmap
Try
bmp = Bitmap.FromFile(imgFile)
Clipboard.SetDataObject(bmp)
Dim MyFormat As DataFormats.Format = DataFormats.GetFormat(DataFormats.Bitmap)
If RichTextBox1.CanPaste(MyFormat) Then
RichTextBox1.Paste(MyFormat)
End If
Catch ex As Exception
MessageBox.Show("插入图片时发生错误")
End Try
End Sub
'新建文件
Private Sub 新建文件NToolStripMenuItem_Click(sender As Object,e As EventArgs) Handles 新建文件NToolStripMenuItem.Click
RichTextBox1.Text = ""
End Sub
'载入文件
Private Sub 载入文件LToolStripMenuItem_Click(sender As Object,e As EventArgs) Handles 载入文件LToolStripMenuItem.Click
If OpenFileDialog1.ShowDialog = DialogResult.OK Then
RichTextBox1.LoadFile(OpenFileDialog1.FileName)
End If
End Sub
'保存文件
Private Sub 保存文件SToolStripMenuItem_Click(sender As Object,e As EventArgs) Handles 保存文件SToolStripMenuItem.Click
If SaveFileDialog1.ShowDialog = DialogResult.OK Then
RichTextBox1.SaveFile(SaveFileDialog1.FileName)
End If
End Sub
'剪切
Private Sub 剪切ToolStripMenuItem_Click(sender As Object,e As EventArgs) Handles 剪切ToolStripMenuItem.Click
Clipboard.SetData(DataFormats.Rtf,RichTextBox1.SelectedRtf）
RichTextBox1.SelectedText = ""
End Sub
'复制
Private Sub 复制CToolStripMenuItem_Click(sender As Object,e As EventArgs) Handles 复制CToolStripMenuItem.Click
Clipboard.SetData(DataFormats.Rtf,RichTextBox1.SelectedRtf）
End Sub
'粘贴
Private Sub 粘贴PToolStripMenuItem_Click(sender As Object,e As EventArgs) Handles 粘贴PToolStripMenuItem.Click
RichTextBox1.SelectedRtf = Clipboard.GetData(DataFormats.Rtf)
End Sub
'关于
Private Sub 关于AToolStripMenuItem_Click(sender As Object,e As EventArgs) Handles 关于AToolStripMenuItem.Click
MessageBox.Show("这是一个富文件编辑器，可以编辑RTF文档" & ControlChars.CrLf & "来自： http://blog.csdn.net/uruseibest","编辑器",MessageBoxButtons.OK)
End Sub
'退出
Private Sub 退出XToolStripMenuItem_Click(sender As Object,e As EventArgs) Handles 退出XToolStripMenuItem.Click
Application.Exit()
End Sub
'鼠标按下时判断所在行数，修改到状态栏
Private Sub RichTextBox1_MouseDown(sender As Object,e As MouseEventArgs) Handles RichTextBox1.MouseDown
Dim allLines As Integer
Dim curLines As Integer
allLines = RichTextBox1.GetLineFromCharIndex(RichTextBox1.TextLength) + 1
curLines = RichTextBox1.GetLineFromCharIndex(RichTextBox1.SelectionStart) + 1
ToolStripStatusLabel1.Text = "总 " & allLines & "行 " & "第 " & curLines & "行 "
End Sub
End Class