'欢迎与我交流： [email protected]
所有源代码均在这里下载：
_ http://www.up2e.com/resource.php _
'本程序代码是VB.NET课程设计的作业
'代码编写及整理：路海
Imports System.Drawing.Printing
Imports System.Drawing.Font
Public Class formMain
Inherits System.Windows.Forms.Form
#Region " Windows 窗体设计器生成的代码 "
Public Sub New()
MyBase.New()
'该调用是 Windows 窗体设计器所必需的。
InitializeComponent()
'在 InitializeComponent() 调用之后添加任何初始化
End Sub
'窗体重写处置以清理组件列表。
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub
'Windows 窗体设计器所必需的
Private components As System.ComponentModel.IContainer
'注意：以下过程是 Windows 窗体设计器所必需的
'可以使用 Windows 窗体设计器修改此过程。
'不要使用代码编辑器修改它。
Friend WithEvents MainMenu1 As System.Windows.Forms.MainMenu
Friend WithEvents mFile As System.Windows.Forms.MenuItem
Friend WithEvents mNew As System.Windows.Forms.MenuItem
Friend WithEvents mOpen As System.Windows.Forms.MenuItem
'.....................
'.......................
'.....................
'由于很长，我把他略去了
'.................
'..................
Me.Panel1.SuspendLayout()
Me.SuspendLayout()
'
'MainMenu1
'
Me.MainMenu1.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.mFile, Me.mEdit, Me.mView, Me.mFormat, Me.mHelp})
'
'mFile
'
Me.mFile.Index = 0
Me.mFile.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.mNew, Me.mOpen, Me.mSave, Me.mSaveas, Me.MenuItem6, Me.mPrint, Me.mPrintpreview, Me.mPagesetup, Me.MenuItem10, Me.mExit})
Me.mFile.Text = "文件(&F)"
'
'mNew
'
Me.mNew.Index = 0
Me.mNew.Shortcut = System.Windows.Forms.Shortcut.CtrlN
Me.mNew.Text = "新建(&N)..."
'
'mOpen
'
Me.mOpen.Index = 1
Me.mOpen.Shortcut = System.Windows.Forms.Shortcut.CtrlO
Me.mOpen.Text = "打开(&O)... "
'
'mSave
'
Me.mSave.Index = 2
Me.mSave.Shortcut = System.Windows.Forms.Shortcut.CtrlS
Me.mSave.Text = "保存(&S) "
'
'mSaveas
'
Me.mSaveas.Index = 3
Me.mSaveas.Text = "另存为(&A)..."
'
'MenuItem6
'
Me.MenuItem6.Index = 4
Me.MenuItem6.Text = "-"
'
'mPrint
'
Me.mPrint.Index = 5
Me.mPrint.Shortcut = System.Windows.Forms.Shortcut.CtrlP
Me.mPrint.Text = "打印(&P)..."
'
'mPrintpreview
'
Me.mPrintpreview.Index = 6
Me.mPrintpreview.Text = "打印预览(&V)"
'
'mPagesetup
'
Me.mPagesetup.Index = 7
Me.mPagesetup.Text = "页面设置(&U)..."
'
'MenuItem10
'
Me.MenuItem10.Index = 8
Me.MenuItem10.Text = "-"
'
'mExit
'
Me.mExit.Index = 9
Me.mExit.Text = "退出(&X)"
'
'mEdit
'
Me.mEdit.Index = 1
Me.mEdit.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.mUndo, Me.MenuItem1, Me.mCut, Me.mCopy, Me.mPaste, Me.mClear, Me.mSelectall, Me.MenuItem21, Me.mFind, Me.mFindnext, Me.mReplace})
Me.mEdit.Text = "编辑(&E)"
'
'mUndo
'
Me.mUndo.Index = 0
Me.mUndo.Shortcut = System.Windows.Forms.Shortcut.CtrlZ
Me.mUndo.Text = "撤销(&U)"
'
'MenuItem1
'
Me.MenuItem1.Index = 1
Me.MenuItem1.Text = "-"
'
'mCut
'
Me.mCut.Index = 2
Me.mCut.Shortcut = System.Windows.Forms.Shortcut.CtrlX
Me.mCut.Text = "剪切(&T)"
'
'mCopy
'
Me.mCopy.Index = 3
Me.mCopy.Shortcut = System.Windows.Forms.Shortcut.CtrlC
Me.mCopy.Text = "复制(&C)"
'
'mPaste
'
Me.mPaste.Index = 4
Me.mPaste.Shortcut = System.Windows.Forms.Shortcut.CtrlP
Me.mPaste.Text = "粘贴(&P)"
'
'mClear
'
Me.mClear.Index = 5
Me.mClear.Shortcut = System.Windows.Forms.Shortcut.Del
Me.mClear.Text = "清除(&A)"
'
'mSelectall
'
Me.mSelectall.Index = 6
Me.mSelectall.Shortcut = System.Windows.Forms.Shortcut.CtrlA
Me.mSelectall.Text = "全选(&L)"
'
'MenuItem21
'
Me.MenuItem21.Index = 7
Me.MenuItem21.Text = "-"
'
'mFind
'
Me.mFind.Index = 8
Me.mFind.Shortcut = System.Windows.Forms.Shortcut.CtrlF
Me.mFind.Text = "查找(&F)..."
'
'mFindnext
'
Me.mFindnext.Index = 9
Me.mFindnext.Shortcut = System.Windows.Forms.Shortcut.F3
Me.mFindnext.Text = "查找下一个(&N)"
'
'mReplace
'
Me.mReplace.Index = 10
Me.mReplace.Shortcut = System.Windows.Forms.Shortcut.CtrlH
Me.mReplace.Text = "替换(&E)..."
'
'mView
'
Me.mView.Index = 2
Me.mView.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.mStatusbar})
Me.mView.Text = "查看(&V)"
'
'mStatusbar
'
Me.mStatusbar.Checked = True
Me.mStatusbar.Index = 0
Me.mStatusbar.Text = "状态栏(&S)"
'
'mFormat
'
Me.mFormat.Index = 3
Me.mFormat.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.mFont, Me.MenuItem2})
Me.mFormat.Text = "格式(&D)"
'
'mFont
'
Me.mFont.Index = 0
Me.mFont.Text = "字体(&F)..."
'
'MenuItem2
'
Me.MenuItem2.Index = 1
Me.MenuItem2.Text = "颜色(&C)..."
'
'mHelp
'
Me.mHelp.Index = 4
Me.mHelp.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.mHelptopics, Me.MenuItem34, Me.mAbout})
Me.mHelp.Text = "帮助(&H)"
'
'mHelptopics
'
Me.mHelptopics.Index = 0
Me.mHelptopics.Text = "帮助主题(&H)"
'
'MenuItem34
'
Me.MenuItem34.Index = 1
Me.MenuItem34.Text = "-"
'
'mAbout
'
Me.mAbout.Index = 2
Me.mAbout.Text = "关于本写字板作业(&A)"
'
'SaveFileDialog1
'
Me.SaveFileDialog1.FileName = "doc1"
'
'ToolBar1
'
Me.ToolBar1.AllowDrop = True
Me.ToolBar1.AutoSize = False
Me.ToolBar1.Buttons.AddRange(New System.Windows.Forms.ToolBarButton() {Me.tbbNew, Me.tbbOpen, Me.tbbSave, Me.ToolBarButton1, Me.ToolBarButton2, Me.vbbPrint, Me.tbbPreview, Me.ToolBarButton3, Me.ToolBarButton4, Me.tbbFind, Me.ToolBarButton5, Me.ToolBarButton6, Me.tbbCut, Me.tbbCopy, Me.tbbPaste, Me.tbbUndo})
Me.ToolBar1.ButtonSize = New System.Drawing.Size(25, 24)
Me.ToolBar1.DropDownArrows = True
Me.ToolBar1.ImageList = Me.ImageList1
Me.ToolBar1.Name = "ToolBar1"
Me.ToolBar1.ShowToolTips = True
Me.ToolBar1.Size = New System.Drawing.Size(688, 32)
Me.ToolBar1.TabIndex = 0
'
'tbbNew
'
Me.tbbNew.ImageIndex = 5
Me.tbbNew.ToolTipText = "新建"
'
'tbbOpen
'
Me.tbbOpen.ImageIndex = 6
Me.tbbOpen.ToolTipText = "打开"
'
'tbbSave
'
Me.tbbSave.ImageIndex = 10
Me.tbbSave.ToolTipText = "保存"
'
'ToolBarButton1
'
Me.ToolBarButton1.Style = System.Windows.Forms.ToolBarButtonStyle.Separator
'
'ToolBarButton2
'
Me.ToolBarButton2.Style = System.Windows.Forms.ToolBarButtonStyle.Separator
'
'vbbPrint
'
Me.vbbPrint.ImageIndex = 9
Me.vbbPrint.ToolTipText = "打印"
'
'tbbPreview
'
Me.tbbPreview.ImageIndex = 8
Me.tbbPreview.ToolTipText = "打印预览"
'
'ToolBarButton3
'
Me.ToolBarButton3.Style = System.Windows.Forms.ToolBarButtonStyle.Separator
'
'ToolBarButton4
'
Me.ToolBarButton4.Style = System.Windows.Forms.ToolBarButtonStyle.Separator
'
'tbbFind
'
Me.tbbFind.ImageIndex = 12
Me.tbbFind.ToolTipText = "查找"
'
'ToolBarButton5
'
Me.ToolBarButton5.Style = System.Windows.Forms.ToolBarButtonStyle.Separator
'
'ToolBarButton6
'
Me.ToolBarButton6.Style = System.Windows.Forms.ToolBarButtonStyle.Separator
'
'tbbCut
'
Me.tbbCut.ImageIndex = 4
Me.tbbCut.ToolTipText = "剪切"
'
'tbbCopy
'
Me.tbbCopy.ImageIndex = 3
Me.tbbCopy.ToolTipText = "复制"
'
'tbbPaste
'
Me.tbbPaste.ImageIndex = 7
Me.tbbPaste.ToolTipText = "粘贴"
'
'tbbUndo
'
Me.tbbUndo.ImageIndex = 11
Me.tbbUndo.ToolTipText = "撤销"
'
'ImageList1
'
Me.ImageList1.ColorDepth = System.Windows.Forms.ColorDepth.Depth8Bit
Me.ImageList1.ImageSize = New System.Drawing.Size(16, 16)
Me.ImageList1.ImageStream = CType(resources.GetObject("ImageList1.ImageStream"), System.Windows.Forms.ImageListStreamer)
Me.ImageList1.TransparentColor = System.Drawing.Color.Transparent
'
'rtbox
'
Me.rtbox.Anchor = (((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom) _
Or System.Windows.Forms.AnchorStyles.Left) _
Or System.Windows.Forms.AnchorStyles.Right)
Me.rtbox.Font = New System.Drawing.Font("宋体", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
Me.rtbox.Location = New System.Drawing.Point(0, 64)
Me.rtbox.Name = "rtbox"
Me.rtbox.Size = New System.Drawing.Size(688, 424)
Me.rtbox.TabIndex = 3
Me.rtbox.Text = ""
'
'PrintDialog1
'
Me.PrintDialog1.Document = Me.PrintDocument1
'
'comboxFont
'
Me.comboxFont.Font = New System.Drawing.Font("宋体", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
Me.comboxFont.Location = New System.Drawing.Point(184, 40)
Me.comboxFont.Name = "comboxFont"
Me.comboxFont.Size = New System.Drawing.Size(121, 20)
Me.comboxFont.TabIndex = 5
Me.comboxFont.Text = "字体"
'
'comboxSize
'
Me.comboxSize.Items.AddRange(New Object() {"8", "9", "10", "11", "12", "14", "16", "18", "20", "22", "24", "26", "28", "36", "48", "72"})
Me.comboxSize.Location = New System.Drawing.Point(304, 40)
Me.comboxSize.Name = "comboxSize"
Me.comboxSize.Size = New System.Drawing.Size(48, 20)
Me.comboxSize.TabIndex = 6
Me.comboxSize.Text = "大小"
'
'tbbbold
'
Me.tbbbold.ImageIndex = 0
Me.tbbbold.Style = System.Windows.Forms.ToolBarButtonStyle.ToggleButton
Me.tbbbold.ToolTipText = "加粗"
'
'tbbi
'
Me.tbbi.ImageIndex = 1
Me.tbbi.Style = System.Windows.Forms.ToolBarButtonStyle.ToggleButton
Me.tbbi.ToolTipText = "斜体"
'
'tbbu
'
Me.tbbu.ImageIndex = 2
Me.tbbu.Style = System.Windows.Forms.ToolBarButtonStyle.ToggleButton
Me.tbbu.ToolTipText = "下划线"
'
'tbbcolor
'
Me.tbbcolor.ImageIndex = 16
Me.tbbcolor.ToolTipText = "这个是颜色！因为找不到合适的。"
'
'ToolBarButton8
'
Me.ToolBarButton8.Style = System.Windows.Forms.ToolBarButtonStyle.Separator
'
'ToolBarButton7
'
Me.ToolBarButton7.Style = System.Windows.Forms.ToolBarButtonStyle.Separator
'
'tbbleft
'
Me.tbbleft.ImageIndex = 13
Me.tbbleft.Style = System.Windows.Forms.ToolBarButtonStyle.ToggleButton
Me.tbbleft.ToolTipText = "靠左"
'
'tbbmiddle
'
Me.tbbmiddle.ImageIndex = 15
Me.tbbmiddle.Style = System.Windows.Forms.ToolBarButtonStyle.ToggleButton
Me.tbbmiddle.ToolTipText = "靠中"
'
'tbbright
'
Me.tbbright.ImageIndex = 14
Me.tbbright.Style = System.Windows.Forms.ToolBarButtonStyle.ToggleButton
Me.tbbright.ToolTipText = "靠右"
'
'ToolBar2
'
Me.ToolBar2.Buttons.AddRange(New System.Windows.Forms.ToolBarButton() {Me.tbbbold, Me.tbbi, Me.tbbu, Me.tbbcolor, Me.ToolBarButton8, Me.ToolBarButton7, Me.tbbleft, Me.tbbmiddle, Me.tbbright})
Me.ToolBar2.ButtonSize = New System.Drawing.Size(23, 22)
Me.ToolBar2.DropDownArrows = True
Me.ToolBar2.ImageList = Me.ImageList1
Me.ToolBar2.Location = New System.Drawing.Point(0, 32)
Me.ToolBar2.Name = "ToolBar2"
Me.ToolBar2.ShowToolTips = True
Me.ToolBar2.Size = New System.Drawing.Size(688, 25)
Me.ToolBar2.TabIndex = 7
'
'StatusBar1
'
Me.StatusBar1.Location = New System.Drawing.Point(0, 467)
Me.StatusBar1.Name = "StatusBar1"
Me.StatusBar1.Size = New System.Drawing.Size(688, 22)
Me.StatusBar1.TabIndex = 8
'
'Panel1
'
Me.Panel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
Me.Panel1.Controls.AddRange(New System.Windows.Forms.Control() {Me.PictureBox1, Me.closepanel, Me.Label1, Me.mpreplace, Me.findnext, Me.find, Me.rpbox, Me.txtbox})
Me.Panel1.Location = New System.Drawing.Point(192, 160)
Me.Panel1.Name = "Panel1"
Me.Panel1.Size = New System.Drawing.Size(272, 96)
Me.Panel1.TabIndex = 9
Me.Panel1.Visible = False
'
'PictureBox1
'
Me.PictureBox1.Image = CType(resources.GetObject("PictureBox1.Image"), System.Drawing.Bitmap)
Me.PictureBox1.Location = New System.Drawing.Point(8, 8)
Me.PictureBox1.Name = "PictureBox1"
Me.PictureBox1.Size = New System.Drawing.Size(16, 16)
Me.PictureBox1.TabIndex = 7
Me.PictureBox1.TabStop = False
'
'closepanel
'
Me.closepanel.Font = New System.Drawing.Font("宋体", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
Me.closepanel.ForeColor = System.Drawing.Color.Black
Me.closepanel.Location = New System.Drawing.Point(240, 64)
Me.closepanel.Name = "closepanel"
Me.closepanel.Size = New System.Drawing.Size(24, 24)
Me.closepanel.TabIndex = 6
Me.closepanel.Text = "关"
'
'Label1
'
Me.Label1.Location = New System.Drawing.Point(24, 8)
Me.Label1.Name = "Label1"
Me.Label1.Size = New System.Drawing.Size(61, 16)
Me.Label1.TabIndex = 5
Me.Label1.Text = "查找-可拖"
'
'mpreplace
'
Me.mpreplace.Location = New System.Drawing.Point(112, 64)
Me.mpreplace.Name = "mpreplace"
Me.mpreplace.Size = New System.Drawing.Size(72, 23)
Me.mpreplace.TabIndex = 4
Me.mpreplace.Text = "替换"
'
'findnext
'
Me.findnext.Location = New System.Drawing.Point(192, 32)
Me.findnext.Name = "findnext"
Me.findnext.TabIndex = 3
Me.findnext.Text = "下一个"
'
'find
'
Me.find.Location = New System.Drawing.Point(112, 32)
Me.find.Name = "find"
Me.find.Size = New System.Drawing.Size(72, 23)
Me.find.TabIndex = 2
Me.find.Text = "查找"
'
'rpbox
'
Me.rpbox.Location = New System.Drawing.Point(8, 64)
Me.rpbox.Name = "rpbox"
Me.rpbox.TabIndex = 1
Me.rpbox.Text = ""
'
'txtbox
'
Me.txtbox.Location = New System.Drawing.Point(8, 32)
Me.txtbox.Name = "txtbox"
Me.txtbox.TabIndex = 0
Me.txtbox.Text = ""
'
'formMain
'
Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
Me.ClientSize = New System.Drawing.Size(688, 489)
Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Panel1, Me.StatusBar1, Me.comboxSize, Me.comboxFont, Me.ToolBar2, Me.rtbox, Me.ToolBar1})
Me.Icon = CType(resources.GetObject("$this.Icon"), System.Drawing.Icon)
Me.Menu = Me.MainMenu1
Me.Name = "formMain"
Me.Text = "VB.NET课程设计作业2-写字板:::::By SunnyGroup 2002:::Shanghai Fisheries University:::::"
Me.Panel1.ResumeLayout(False)
Me.ResumeLayout(False)
End Sub
#End Region
'声明一个全局boolean变量，用来标记richtextbox中文本变化和保存情况
Dim bSave As Boolean
'下面这段程序用于对对话框属性和全局变量进行初始化设置
Private Sub formMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'为bSave首先赋初值
bSave = True
'为savefiledialog进行初始化
SaveFileDialog1.FileName = ""
SaveFileDialog1.DefaultExt = "txt"
SaveFileDialog1.Filter = "Text files (.txt) |.txt|All files (.) |."
SaveFileDialog1.Title = "保存文件.."
'为openfiledialog进行初始化
OpenFileDialog1.FileName = ""
OpenFileDialog1.DefaultExt = "txt"
OpenFileDialog1.Filter = "Text files (.txt) |.txt|All files (.) |."
OpenFileDialog1.Title = "打开文件.."
'下面这段代码是加载当地系统中所有字体到Combobox中
Dim allfonts As FontFamily
For Each allfonts In System.Drawing.FontFamily.Families
comboxFont.Items.Add(allfonts.Name)
Next
End Sub
Private Sub rtbox_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles rtbox.TextChanged
'文本发生了改变，则将变量bSave置为False
bSave = False
End Sub
'********************************************************************************************
'字体
'下面这个函数是用来去除用户指定的字体样式，如加粗，下划线等等
Public Sub RemoveFontStyle(ByVal rtb As RichTextBox, _
ByVal style As System.Drawing.FontStyle)
' 如果选择文本的长度大于0，将一个一个去除样式。
' 这是十分必要的！因为选择的文本中可能有许多不同的样式，而我们的原意是
' 保持所有原来的样式，除了那个要被去除的样式
If rtb.SelectionLength > 0 Then
Dim selStart As Integer = rtb.SelectionStart
Dim selLength As Integer = rtb.SelectionLength
Dim currFont As System.Drawing.Font
Dim currStyle As System.Drawing.FontStyle
Dim i As Integer
For i = 0 To selLength - 1
' 选择一个字符
rtb.Select(selStart + i, 1)
' 得到被选择字符的字体
currFont = rtb.SelectionFont
' 得到被选择字符的样式，同时去除要被除去的那个样式
currStyle = currFont.Style
currStyle = currStyle And Not style
' 然后赋予这些字符新的字体和样式
rtb.SelectionFont = New Font(currFont.FontFamily, currFont.Size, _
currStyle)
Next
' 保持原有的选择
rtb.Select(selStart, selLength)
Else
rtb.SelectionFont = New Font(rtb.SelectionFont, _
rtb.SelectionFont.Style And Not style)
End If
End Sub
'下面这个函数是用来增加字体的样式，比如加粗，下划线等等
Public Sub AddFontStyle(ByVal rtb As RichTextBox, _
ByVal style As System.Drawing.FontStyle)
' 如果选择的文本长度大于0，将一个一个字符地增加样式。
'这是十分必要的!因为被选择的字符可能同时含有多种样式，
' 而我们的原意只是保持所有原来的样式，同时增加上指定的样式
If rtb.SelectionLength > 0 Then
Dim selStart As Integer = rtb.SelectionStart
Dim selLength As Integer = rtb.SelectionLength
Dim currFont As System.Drawing.Font
Dim currStyle As System.Drawing.FontStyle
Dim i As Integer
For i = 0 To selLength - 1
' 选择的字符
rtb.Select(selStart + i, 1)
' 得到被选择字符的字体
currFont = rtb.SelectionFont
' 得到现在的样式，同时增加指定的样式
currStyle = currFont.Style
currStyle = currStyle Or style
' 然后使字符拥有新的字体和新的样式，有可能出现异常，
'因为不是所有字体都支持所有的样式，所以这里捕捉异常
Try
rtb.SelectionFont = New Font(currFont.FontFamily, currFont.Size, _
currStyle)
Catch ex As Exception
End Try
Next
rtb.Select(selStart, selLength)
Else
rtb.SelectionFont = New Font(rtb.SelectionFont, _
rtb.SelectionFont.Style Or style)
End If
End Sub
'并不是所有的字体都支持所有的样式，下面这个函数是用来检查新字体是否支持选择的样式，若不支持，则移除该样式
'使用举例： GetSafeStyleForFontFamily(richTextBox1.SelectionFont.FontFamily,richTextBox1.SelectionFont.Style)
Public Function GetSafeStyleForFontFamily(ByVal fontFam As FontFamily, _
ByVal style As FontStyle) As FontStyle
' 移除不支持的样式
If (style And FontStyle.Regular) = FontStyle.Regular Then
If Not fontFam.IsStyleAvailable(FontStyle.Regular) Then
style = style And Not FontStyle.Regular
End If
End If
If (style And FontStyle.Bold) = FontStyle.Bold Then
If Not fontFam.IsStyleAvailable(FontStyle.Bold) Then
style = style And Not FontStyle.Bold
End If
End If
If (style And FontStyle.Italic) = FontStyle.Italic Then
If Not fontFam.IsStyleAvailable(FontStyle.Italic) Then
style = style And Not FontStyle.Italic
End If
End If
If (style And FontStyle.Underline) = FontStyle.Underline Then
If Not fontFam.IsStyleAvailable(FontStyle.Underline) Then
style = style And Not FontStyle.Underline
End If
End If
If (style And FontStyle.Strikeout) = FontStyle.Strikeout Then
If Not fontFam.IsStyleAvailable(FontStyle.Strikeout) Then
style = style And Not FontStyle.Strikeout
End If
End If
Return style
End Function
'下面这个SetFontSize函数是用来设置字体的大小
Public Sub SetFontSize(ByVal rtb As RichTextBox, ByVal fontSize As Single)
If rtb.SelectionLength > 0 Then
Dim selStart As Integer = rtb.SelectionStart
Dim selLength As Integer = rtb.SelectionLength
Dim currFont As System.Drawing.Font
Dim i As Integer
For i = 0 To selLength - 1
rtb.Select(selStart + i, 1)
currFont = rtb.SelectionFont
rtb.SelectionFont = New Font(currFont.FontFamily, fontSize, _
currFont.Style)
Next
rtb.Select(selStart, selLength)
Else
rtb.SelectionFont = New Font(rtb.SelectionFont.Name, fontSize, _
rtb.SelectionFont.Style)
End If
End Sub
'下面这个SetFontFamily函数是用来设置字体的变化
Public Sub SetFontFamily(ByVal rtb As RichTextBox, ByVal fontName As String)
Dim fontFam As New System.Drawing.FontFamily(fontName)
Dim style As System.Drawing.FontStyle
If rtb.SelectionLength > 0 Then
Dim selStart As Integer = rtb.SelectionStart
Dim selLength As Integer = rtb.SelectionLength
Dim i As Integer
For i = 0 To selLength - 1
rtb.Select(selStart + i, 1)
style = GetSafeStyleForFontFamily(fontFam, rtb.SelectionFont.Style)
rtb.SelectionFont = New Font(fontFam, rtb.SelectionFont.Size, style)
Next
rtb.Select(selStart, selLength)
Else
style = GetSafeStyleForFontFamily(fontFam, rtb.SelectionFont.Style)
rtb.SelectionFont = New Font(fontFam, rtb.SelectionFont.Size, style)
End If
End Sub
'************************************************************************************
'下面这个函数是用来新建文件
Private Sub newfile()
Dim flag As Integer
'如果文本已经被保存，则清空rtbox内容，所有变量重置以新建文本
If bSave Then
rtbox.Clear()
SaveFileDialog1.FileName = ""
bSave = True
Else
'如果文本没有保存，则提示是否要保存
flag = MessageBox.Show("文件内容已更改，想保存文件吗？？", "info", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information)
Select Case flag
'case 6是当用户选择了“保存”，则执行保存文件的操作
Case 6
'如果没有选择要保存的文件名，则弹出保存对话框，由用户选择要保存的文件名后保存文本
If SaveFileDialog1.FileName = "" Then
If SaveFileDialog1.ShowDialog Then
rtbox.SaveFile(SaveFileDialog1.FileName, RichTextBoxStreamType.PlainText)
End If
Else
'如果已经选择了要保存的文件名，则保存文本到文件中
rtbox.SaveFile(SaveFileDialog1.FileName, RichTextBoxStreamType.PlainText)
End If
'然后就是清空rtbox的内容，重置变量以新建文本
bSave = True
rtbox.Clear()
SaveFileDialog1.FileName = ""
'case 7就是当用户选择了no也就是不保存时，立即清空rtbox内容，重置变量以新建文本
Case 7
rtbox.Clear()
SaveFileDialog1.FileName = ""
bSave = True
'case else就是当用户选择了取消，则取消新建操作，也就是Do Nothing
Case Else
End Select
End If
End Sub
'下面这个函数是用来打开文件
Private Sub openfile()
Dim flag As Integer
'如果文本内容没有保存，询问用户是否保存
If Not bSave Then
flag = MessageBox.Show("文件内容已更改，想保存文件吗？？", "info", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information)
Select Case flag
'case 6是当用户选择了“保存”，则执行保存文件的操作
Case 6
'如果没有选择要保存的文件名，则弹出保存对话框，由用户选择要保存的文件名后保存文本
If SaveFileDialog1.FileName = "" Then
If SaveFileDialog1.ShowDialog Then
rtbox.SaveFile(SaveFileDialog1.FileName, RichTextBoxStreamType.PlainText)
End If
Else
'如果已经选择了要保存的文件名，则保存文本到文件中
rtbox.SaveFile(SaveFileDialog1.FileName, RichTextBoxStreamType.PlainText)
End If
'弹出打开文件对话框，执行打开文件操作
bSave = True
If OpenFileDialog1.ShowDialog() = DialogResult.OK Then
rtbox.LoadFile(OpenFileDialog1.FileName, RichTextBoxStreamType.PlainText)
End If
'case 7的意思是如果用户选择了“不保存”，则直接执行打开文件操作
Case 7
If OpenFileDialog1.ShowDialog() = DialogResult.OK Then
rtbox.LoadFile(OpenFileDialog1.FileName, RichTextBoxStreamType.PlainText)
End If
bSave = True
'case else也就是用户选择了取消
Case Else
End Select
'else文本已经保存，直接执行打开文件操作
Else
If OpenFileDialog1.ShowDialog() = DialogResult.OK Then
rtbox.LoadFile(OpenFileDialog1.FileName, RichTextBoxStreamType.PlainText)
End If
bSave = True
End If
End Sub
'下面这个函数是用来保存文件
Private Sub savefile()
'如果没有选择要保存的文件名，则弹出保存对话框，由用户选择要保存的文件名后保存文本
If SaveFileDialog1.FileName = "" Then
If SaveFileDialog1.ShowDialog Then
rtbox.SaveFile(SaveFileDialog1.FileName, RichTextBoxStreamType.PlainText)
End If
Else
'如果已经选择了要保存的文件名，则保存文本到文件中
rtbox.SaveFile(SaveFileDialog1.FileName, RichTextBoxStreamType.PlainText)
End If
bSave = True
End Sub
'*****************************************************************************
'打印，打印预览
' 必须确定所有的打印事件都是针对同一个 PrintDocument
Private WithEvents pdoc As New PrintDocument()
' 打印文件是一个函数性的打印事件，每当要打印时该事件被触发
' 下面是一个非常快速和有用的精确计算要打印的文本是否能够被包括到整张打印页面
'是我从微软站点上得到的资料，我把它应用到了我的程序中
Private Sub pdoc_PrintPage(ByVal sender As Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles pdoc.PrintPage
' Declare a variable to hold the position of the last printed char. Declare
' as static