richtext.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 SaveAs As System.Windows.Forms.Button
	Public WithEvents FileOpen_Renamed As System.Windows.Forms.Button
	Public WithEvents CommonDialog1 As AxMSComDlg.AxCommonDialog
	Public WithEvents RichTextBox1 As AxRichTextLib.AxRichTextBox
	'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。
	<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.SaveAs = New System.Windows.Forms.Button()
        Me.FileOpen_Renamed = New System.Windows.Forms.Button()
        Me.CommonDialog1 = New AxMSComDlg.AxCommonDialog()
        Me.RichTextBox1 = New AxRichTextLib.AxRichTextBox()
        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(232, 96)
        Me.Exit_Renamed.Name = "Exit_Renamed"
        Me.Exit_Renamed.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.Exit_Renamed.Size = New System.Drawing.Size(49, 25)
        Me.Exit_Renamed.TabIndex = 3
        Me.Exit_Renamed.Text = "退出"
        '
        'SaveAs
        '
        Me.SaveAs.BackColor = System.Drawing.SystemColors.Control
        Me.SaveAs.Cursor = System.Windows.Forms.Cursors.Default
        Me.SaveAs.ForeColor = System.Drawing.SystemColors.ControlText
        Me.SaveAs.Location = New System.Drawing.Point(232, 56)
        Me.SaveAs.Name = "SaveAs"
        Me.SaveAs.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.SaveAs.Size = New System.Drawing.Size(49, 25)
        Me.SaveAs.TabIndex = 2
        Me.SaveAs.Text = "另存为"
        '
        'FileOpen_Renamed
        '
        Me.FileOpen_Renamed.BackColor = System.Drawing.SystemColors.Control
        Me.FileOpen_Renamed.Cursor = System.Windows.Forms.Cursors.Default
        Me.FileOpen_Renamed.ForeColor = System.Drawing.SystemColors.ControlText
        Me.FileOpen_Renamed.Location = New System.Drawing.Point(232, 16)
        Me.FileOpen_Renamed.Name = "FileOpen_Renamed"
        Me.FileOpen_Renamed.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.FileOpen_Renamed.Size = New System.Drawing.Size(49, 25)
        Me.FileOpen_Renamed.TabIndex = 1
        Me.FileOpen_Renamed.Text = "打开"
        '
        'CommonDialog1
        '
        Me.CommonDialog1.Enabled = True
        Me.CommonDialog1.Location = New System.Drawing.Point(176, 8)
        Me.CommonDialog1.Name = "CommonDialog1"
        Me.CommonDialog1.OcxState = CType(resources.GetObject("CommonDialog1.OcxState"), System.Windows.Forms.AxHost.State)
        Me.CommonDialog1.Size = New System.Drawing.Size(32, 32)
        Me.CommonDialog1.TabIndex = 4
        '
        'RichTextBox1
        '
        Me.RichTextBox1.Location = New System.Drawing.Point(8, 8)
        Me.RichTextBox1.Name = "RichTextBox1"
        Me.RichTextBox1.OcxState = CType(resources.GetObject("RichTextBox1.OcxState"), System.Windows.Forms.AxHost.State)
        Me.RichTextBox1.Size = New System.Drawing.Size(201, 225)
        Me.RichTextBox1.TabIndex = 0
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 13)
        Me.ClientSize = New System.Drawing.Size(326, 253)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Exit_Renamed, Me.SaveAs, Me.FileOpen_Renamed, Me.CommonDialog1, Me.RichTextBox1})
        Me.Font = New System.Drawing.Font("宋体", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Location = New System.Drawing.Point(4, 23)
        Me.Name = "Form1"
        Me.Text = "Form1"
        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 
	
	
	
	Private Sub Exit_Renamed_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles Exit_Renamed.Click
		End
	End Sub
	
	Private Sub FileOpen_Renamed_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles FileOpen_Renamed.Click
		Dim OpenFile As Object
		Dim txt As String
		Dim file As Short
		CommonDialog1.CancelError = True
		On Error GoTo ErrHandler
		CommonDialog1.Flags = MSComDlg.FileOpenConstants.cdlOFNFileMustExist
		CommonDialog1.DefaultExt = "RTF"
		CommonDialog1.Filter = "RTF files|*.RTF|Text Files|*.TXT|All Files|*.*"
		CommonDialog1.FilterIndex = 0
		CommonDialog1.ShowOpen()
		RichTextBox1.LoadFile(CommonDialog1.FileName, RichTextLib.LoadSaveConstants.rtfRTF)
		OpenFile = CommonDialog1.FileName
		MsgBox(CommonDialog1.FileName)
		Exit Sub
ErrHandler: 
		If Err.Number = MSComDlg.ErrorConstants.cdlCancel Then Exit Sub
		MsgBox("while opening file error meet") '保存以上所列格式时出错
		OpenFile = ""
	End Sub
	
	Private Sub SaveAs_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles SaveAs.Click
		Dim SaveFile As Object
		CommonDialog1.Filter = "RTF files|*.RTF|Text Files|*.TXT|All Files|*.*"
		CommonDialog1.FilterIndex = 0
		CommonDialog1.ShowSave()
		RichTextBox1.SaveFile(CommonDialog1.FileName, RichTextLib.LoadSaveConstants.rtfRTF)
		SaveFile = CommonDialog1.FileName
		MsgBox(CommonDialog1.FileName)
	End Sub
End Class