textedit.vb

这是一本用Visual Studio.NET进行多媒体编程的读物

Option Strict Off
Option Explicit On
Friend Class Form1
	Inherits System.Windows.Forms.Form
#Region "Windows 窗体设计器生成的代码"
	Public Sub New()
		MyBase.New()
		If m_vb6FormDefInstance Is Nothing Then
			If m_InitializingDefInstance Then
				m_vb6FormDefInstance = Me
			Else
				Try 
					'对于启动窗体，所创建的第一个实例为默认实例。
					If System.Reflection.Assembly.GetExecutingAssembly.EntryPoint.DeclaringType Is Me.GetType Then
						m_vb6FormDefInstance = Me
					End If
				Catch
				End Try
			End If
		End If
		'此调用是 Windows 窗体设计器所必需的。
		InitializeComponent()
	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
	Public ToolTip1 As System.Windows.Forms.ToolTip
	Public WithEvents exit_Renamed As System.Windows.Forms.Button
	Public WithEvents findnext As System.Windows.Forms.Button
	Public WithEvents find As System.Windows.Forms.Button
	Public WithEvents CommonDialog1 As AxMSComDlg.AxCommonDialog
	Public WithEvents RichTextBox1 As AxRichTextLib.AxRichTextBox
	Public WithEvents mnuNew As System.Windows.Forms.MenuItem
	Public WithEvents mnuOpen As System.Windows.Forms.MenuItem
	Public WithEvents mnuSave As System.Windows.Forms.MenuItem
	Public WithEvents mnuPrint As System.Windows.Forms.MenuItem
	Public WithEvents Sep2 As System.Windows.Forms.MenuItem
	Public WithEvents mnuExit As System.Windows.Forms.MenuItem
	Public WithEvents mnuFile As System.Windows.Forms.MenuItem
	Public WithEvents mnuselfont As System.Windows.Forms.MenuItem
	Public WithEvents mnuFont As System.Windows.Forms.MenuItem
	Public MainMenu1 As System.Windows.Forms.MainMenu
	'注意：以下过程是 Windows 窗体设计器所必需的
	'可以使用 Windows 窗体设计器来修改它。
	'不要使用代码编辑器来修改它。
    Friend WithEvents FontDialog1 As System.Windows.Forms.FontDialog
    Friend WithEvents ColorDialog1 As System.Windows.Forms.ColorDialog
    Friend WithEvents MenuItem1 As System.Windows.Forms.MenuItem
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.components = New System.ComponentModel.Container()
        Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(Form1))
        Me.ToolTip1 = New System.Windows.Forms.ToolTip(Me.components)
        Me.exit_Renamed = New System.Windows.Forms.Button()
        Me.findnext = New System.Windows.Forms.Button()
        Me.find = New System.Windows.Forms.Button()
        Me.CommonDialog1 = New AxMSComDlg.AxCommonDialog()
        Me.RichTextBox1 = New AxRichTextLib.AxRichTextBox()
        Me.MainMenu1 = New System.Windows.Forms.MainMenu()
        Me.mnuFile = New System.Windows.Forms.MenuItem()
        Me.mnuNew = New System.Windows.Forms.MenuItem()
        Me.mnuOpen = New System.Windows.Forms.MenuItem()
        Me.mnuSave = New System.Windows.Forms.MenuItem()
        Me.mnuPrint = New System.Windows.Forms.MenuItem()
        Me.Sep2 = New System.Windows.Forms.MenuItem()
        Me.mnuExit = New System.Windows.Forms.MenuItem()
        Me.mnuFont = New System.Windows.Forms.MenuItem()
        Me.mnuselfont = New System.Windows.Forms.MenuItem()
        Me.MenuItem1 = New System.Windows.Forms.MenuItem()
        Me.FontDialog1 = New System.Windows.Forms.FontDialog()
        Me.ColorDialog1 = New System.Windows.Forms.ColorDialog()
        CType(Me.CommonDialog1, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.RichTextBox1, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'exit_Renamed
        '
        Me.exit_Renamed.BackColor = System.Drawing.SystemColors.Control
        Me.exit_Renamed.Cursor = System.Windows.Forms.Cursors.Default
        Me.exit_Renamed.ForeColor = System.Drawing.SystemColors.ControlText
        Me.exit_Renamed.Location = New System.Drawing.Point(384, 251)
        Me.exit_Renamed.Name = "exit_Renamed"
        Me.exit_Renamed.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.exit_Renamed.Size = New System.Drawing.Size(104, 34)
        Me.exit_Renamed.TabIndex = 3
        Me.exit_Renamed.Text = "退出"
        '
        'findnext
        '
        Me.findnext.BackColor = System.Drawing.SystemColors.Control
        Me.findnext.Cursor = System.Windows.Forms.Cursors.Default
        Me.findnext.ForeColor = System.Drawing.SystemColors.ControlText
        Me.findnext.Location = New System.Drawing.Point(215, 251)
        Me.findnext.Name = "findnext"
        Me.findnext.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.findnext.Size = New System.Drawing.Size(103, 34)
        Me.findnext.TabIndex = 2
        Me.findnext.Text = "查找下一个"
        '
        'find
        '
        Me.find.BackColor = System.Drawing.SystemColors.Control
        Me.find.Cursor = System.Windows.Forms.Cursors.Default
        Me.find.ForeColor = System.Drawing.SystemColors.ControlText
        Me.find.Location = New System.Drawing.Point(45, 251)
        Me.find.Name = "find"
        Me.find.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.find.Size = New System.Drawing.Size(81, 34)
        Me.find.TabIndex = 1
        Me.find.Text = "查找"
        '
        'CommonDialog1
        '
        Me.CommonDialog1.Enabled = True
        Me.CommonDialog1.Location = New System.Drawing.Point(577, 44)
        Me.CommonDialog1.Name = "CommonDialog1"
        Me.CommonDialog1.OcxState = CType(resources.GetObject("CommonDialog1.OcxState"), System.Windows.Forms.AxHost.State)
        Me.CommonDialog1.Size = New System.Drawing.Size(40, 40)
        Me.CommonDialog1.TabIndex = 4
        '
        'RichTextBox1
        '
        Me.RichTextBox1.Location = New System.Drawing.Point(11, 0)
        Me.RichTextBox1.Name = "RichTextBox1"
        Me.RichTextBox1.OcxState = CType(resources.GetObject("RichTextBox1.OcxState"), System.Windows.Forms.AxHost.State)
        Me.RichTextBox1.Size = New System.Drawing.Size(533, 220)
        Me.RichTextBox1.TabIndex = 0
        '
        'MainMenu1
        '
        Me.MainMenu1.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.mnuFile, Me.mnuFont})
        '
        'mnuFile
        '
        Me.mnuFile.Index = 0
        Me.mnuFile.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.mnuNew, Me.mnuOpen, Me.mnuSave, Me.mnuPrint, Me.Sep2, Me.mnuExit})
        Me.mnuFile.Text = "&File"
        '
        'mnuNew
        '
        Me.mnuNew.Index = 0
        Me.mnuNew.Shortcut = System.Windows.Forms.Shortcut.CtrlN
        Me.mnuNew.Text = "&New"
        '
        'mnuOpen
        '
        Me.mnuOpen.Index = 1
        Me.mnuOpen.Shortcut = System.Windows.Forms.Shortcut.CtrlO
        Me.mnuOpen.Text = "&Open"
        '
        'mnuSave
        '
        Me.mnuSave.Index = 2
        Me.mnuSave.Shortcut = System.Windows.Forms.Shortcut.CtrlS
        Me.mnuSave.Text = "&Save"
        '
        'mnuPrint
        '
        Me.mnuPrint.Index = 3
        Me.mnuPrint.Shortcut = System.Windows.Forms.Shortcut.CtrlP
        Me.mnuPrint.Text = "&Print"
        '
        'Sep2
        '
        Me.Sep2.Index = 4
        Me.Sep2.Text = "-"
        '
        'mnuExit
        '
        Me.mnuExit.Index = 5
        Me.mnuExit.Text = "E&xit"
        '
        'mnuFont
        '
        Me.mnuFont.Index = 1
        Me.mnuFont.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.mnuselfont, Me.MenuItem1})
        Me.mnuFont.Text = "&Font"
        '
        'mnuselfont
        '
        Me.mnuselfont.Index = 0
        Me.mnuselfont.Shortcut = System.Windows.Forms.Shortcut.CtrlF
        Me.mnuselfont.Text = "&selfont"
        '
        'MenuItem1
        '
        Me.MenuItem1.Index = 1
        Me.MenuItem1.Text = "&selColor"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(8, 18)
        Me.ClientSize = New System.Drawing.Size(576, 294)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.exit_Renamed, Me.findnext, Me.find, Me.CommonDialog1, Me.RichTextBox1})
        Me.Location = New System.Drawing.Point(96, 104)
        Me.Menu = Me.MainMenu1
        Me.Name = "Form1"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.Manual
        Me.Text = "TextEdit"
        CType(Me.CommonDialog1, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.RichTextBox1, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)

    End Sub
#End Region 
#Region "升级支持"
	Private Shared m_vb6FormDefInstance As Form1
	Private Shared m_InitializingDefInstance As Boolean
	Public Shared Property DefInstance() As Form1
		Get
			If m_vb6FormDefInstance Is Nothing OrElse m_vb6FormDefInstance.IsDisposed Then
				m_InitializingDefInstance = True
				m_vb6FormDefInstance = New Form1()
				m_InitializingDefInstance = False
			End If
			DefInstance = m_vb6FormDefInstance
		End Get
		Set
			m_vb6FormDefInstance = Value
		End Set
	End Property
#End Region 
	Public Findstring As String
	
	Private Sub exit_Renamed_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles exit_Renamed.Click
		Me.Close()
		End
	End Sub
	
	Private Sub find_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles find.Click
        Dim Where As String

        Findstring = InputBox("Input your word in under dialogbox", "查找", Findstring)
        Where = InStr(RichTextBox1.Text, Findstring)   ' Find string in text.
        If Where Then   ' If found,
            RichTextBox1.SelStart = Where - 1   ' set selection start and
            RichTextBox1.SelLength = Len(Findstring)   ' set selection length.
            RichTextBox1.Select()
        Else
            MsgBox("String not found.")  ' Notify user.
        End If
    End Sub

    Private Sub findnext_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles findnext.Click
        Dim Where As Integer
        RichTextBox1.SelStart = RichTextBox1.SelStart + RichTextBox1.SelLength

        Where = InStr(RichTextBox1.SelStart, RichTextBox1.Text, Findstring)
        If Where Then   ' If found,
            RichTextBox1.SelStart = Where - 1  ' set selection start and
            RichTextBox1.SelLength = Len(Findstring)   ' set selection length.
            RichTextBox1.Select()
        Else
            MsgBox("String not found.")  ' Notify user.
        End If

    End Sub

    Public Sub mnuExit_Popup(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles mnuExit.Popup
        mnuExit_Click(eventSender, eventArgs)
    End Sub
    Public Sub mnuExit_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles mnuExit.Click
        Me.Close()
        End
    End Sub

    Public Sub mnuNew_Popup(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles mnuNew.Popup
        mnuNew_Click(eventSender, eventArgs)
    End Sub
    Public Sub mnuNew_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles mnuNew.Click
        RichTextBox1.Text = ""
    End Sub

    Public Sub mnuOpen_Popup(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles mnuOpen.Popup
        mnuOpen_Click(eventSender, eventArgs)
    End Sub
    Public Sub mnuOpen_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles mnuOpen.Click
        CommonDialog1.DefaultExt = "RTF" '设置缺省的文件扩展名
        CommonDialog1.Filter = "RTF files|*.RTF|Text Files|*.TXT|All File|*.*"
        '设置过滤器
        CommonDialog1.ShowOpen()
        RichTextBox1.LoadFile((CommonDialog1.FileName))
    End Sub

    Public Sub mnuPrint_Popup(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles mnuPrint.Popup
        mnuPrint_Click(eventSender, eventArgs)
    End Sub
    Public Sub mnuPrint_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles mnuPrint.Click
        CommonDialog1.Flags = MSComDlg.PrinterConstants.cdlPDReturnDC + MSComDlg.PrinterConstants.cdlPDNoPageNums
        If RichTextBox1.SelLength = 0 Then
            CommonDialog1.Flags = CommonDialog1.Flags + MSComDlg.PrinterConstants.cdlPDAllPages
        Else
            CommonDialog1.Flags = CommonDialog1.Flags + MSComDlg.PrinterConstants.cdlPDSelection
        End If
        CommonDialog1.ShowPrinter()
        RichTextBox1.SelPrint(CommonDialog1.hDC)
    End Sub

    Public Sub mnuSave_Popup(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles mnuSave.Popup
        mnuSave_Click(eventSender, eventArgs)
    End Sub
    Public Sub mnuSave_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles mnuSave.Click
        CommonDialog1.ShowSave()
        RichTextBox1.SaveFile((CommonDialog1.FileName))
    End Sub

    Public Sub mnuselfont_Popup(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles mnuselfont.Popup
        mnuselfont_Click(eventSender, eventArgs)
    End Sub
    Public Sub mnuselfont_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles mnuselfont.Click
        FontDialog1.ShowDialog()
        With RichTextBox1
            .Font = FontDialog1.Font
        End With
    End Sub

    Private Sub MenuItem1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItem1.Click
        ColorDialog1.ShowDialog()
        With RichTextBox1
            .BackColor = ColorDialog1.Color
        End With
    End Sub

    Private Sub RichTextBox1_Change(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RichTextBox1.Change

    End Sub


End Class