主题：暂停朗读

 

窗口1_Button2_Click

 

Dim d As String = e.Form.controls("TextBox2").value

Dim sp As New DotNetSpeech.SpVoice()

sp.Voice = sp.GetVoices(String.Empty,String.Empty).Item(0) '语音库

sp.rate = -1 '低速

sp.Speak(d, DotNetSpeech.SpeechVoiceSpeakFlags.SVSFlagsAsync)

 

窗口1_Button3_Click

 

Dim sp As New DotNetSpeech.SpVoice()

sp.Pause()  '暂停

'sp.Resume() '继续

 

执行暂停朗读操作无效，请问如何设置？