7) “BtEnd按钮”MouseHover事件代码

If TipsFlag = True Then

            ToolTip1.SetToolTip(BtStart, "左键设置开始点，右键取消设置")

              Else

            ToolTip1.SetToolTip(BtStart, "")

        End If

（10）菜单核心代码

“打开语音文件”菜单代码：

Private Sub 打开语音文件ToolStripMenuItem1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 打开语音文件ToolStripMenuItem1.Click

       Dim FilePath As String

        '   OpenFileDialog1.ShowDialog()

        With Me.OpenFileDialog1

            .Title = "打开语音文件"

            .CheckFileExists = True

            .CheckPathExists = True

            .Multiselect = False

            .Filter = "mp3文件(*.mp3)|*.mp3|wma文件(*.wma)|*.wma"

            ' OpenFileDialog1.Title = "打开语音文件"

            '  OpenFileDialog1.CheckFileExists = True

            '  OpenFileDialog1.CheckPathExists = True

            '  OpenFileDialog1.Multiselect = False

            '  OpenFileDialog1.Filter = "mp3文件(*.mp3)|*.mp3|wma文件(*.wma)|*.wma"

            If .ShowDialog() = Windows.Forms.DialogResult.Cancel Then

                Exit Sub

            End If

            FilePath = .FileName

        End With

            Me.Text = FilePath

        AxWindowsMediaPlayer1.URL = FilePath

        '设置播放模式 AxWindowsMediaPlayer1 .

        Try

            AxWindowsMediaPlayer1.Ctlcontrols.play()

        Catch ex As Exception