我开始制作刻录CD / DVD的程序,一切都很好。 我找到了使用IMAPI2 API刻录的方法,但现在我遇到了问题: 我无法获得燃烧的进度条。 这是代码:
Dim CDD1 As New IMAPI2.MsftDiscMaster2
Dim CDD2 As New IMAPI2.MsftDiscRecorder2
Dim FSI As New IMAPI2FS.MsftFileSystemImage
Dim CDD3 As New IMAPI2.MsftDiscFormat2Data
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim Index = 0
Dim UniqueID = ""
Dim Directory
Dim Path = "C:\lll"
Dim result
Dim Stream
Label1.Text = "----- Started -----."
UniqueID = CDD1.Item(Index)
Label1.Text = Label1.Text & vbCrLf & "ID found: " & UniqueID
CDD2.InitializeDiscRecorder(UniqueID)
Label1.Text = Label1.Text & vbCrLf & "Recorder selected!"
Directory = FSI.Root
Label1.Text = Label1.Text & vbCrLf & "Directory is here: " & Directory.ToString
CDD3.Recorder = CDD2
Label1.Text = Label1.Text & vbCrLf & "Recorder 2 selected!"
CDD3.ClientName = "IMAPI2 TEST"
Label1.Text = Label1.Text & vbCrLf & "Client Name Selected!"
FSI.ChooseImageDefaults(CDD2)
Label1.Text = Label1.Text & vbCrLf & "Default selected!"
Directory.AddTree(Path, False)
Label1.Text = Label1.Text & vbCrLf & "Directory added!"
result = FSI.CreateResultImage()
Stream = result.ImageStream
Label1.Text = Label1.Text & vbCrLf & "Writing content to disc..."
If (CDD3.IsCurrentMediaSupported(CDD2) = True) Then
If (CDD3.IsRecorderSupported(CDD2) = True) Then
CDD3.Write(Stream)
Else
MsgBox("Not Suported Recorder!")
End If
Else
MsgBox("Not Suported Media!")
End If
Label1.Text = Label1.Text & vbCrLf & "----- Finished -----"
End Sub
何时命令
CDD3.Write(流)
被触发,程序冻结,并且在数据完全烧毁之前不会响应。
有没有办法阻止这种情况,停止程序冻结并启用进度条?
感谢。
答案 0 :(得分:1)
您需要使用线程。因此,在按钮单击事件处理程序中,您启动一个执行实际刻录的新线程,当它在单独的线程中进行时,主线程可以继续更新GUI(包括您的进度条)。
有关简单示例,请参阅Thread.Start,如果您需要更多信息,我建议您从这里开始:Managed Threading