Visual Basic（.NET2002以降）¶

Dim id As Short
Dim result As Integer

Private Sub ResultShow(ByVal title As String, ByVal resultCode As Integer)
    Dim resultString As New StringBuilder(256)
    YdxCnvResultToString(resultCode, resultString)
    Select Case resultCode
        Case 0, Ydx.YDX_RESULT_DI_EXCEED_DATA_NUM, Ydx.YDX_RESULT_DI_EXCEED_BUF_SIZ
            MessageBox.Show(resultString.ToString(), title, MessageBoxButtons.OK, MessageBoxIcon.Asterisk)
        Case Else
            MessageBox.Show(resultString.ToString(), title, MessageBoxButtons.OK, MessageBoxIcon.Hand)
    End Select
End Sub

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    ' ユニット識別スイッチ
    unitSwitchComboBox.ResetText()
    unitSwitchComboBox.Items.AddRange(New String() { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F" })
    unitSwitchComboBox.SelectedIndex = 0

    ' 型名
    modelNameComboBox.ResetText()
    modelNameComboBox.Items.AddRange(New String() { "AIO-64/4/1B-USC", "AIO-04/4/1B-USC" })
    modelNameComboBox.SelectedIndex = 0
End Sub

Private Sub openButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles openButton.Click
    result = YdxOpen(unitSwitchComboBox.SelectedIndex, modelNameComboBox.Text, 0, id)
    If result <> 0 Then
        ResultShow("YdxOpen", result)
    Else
        unitSwitchComboBox.Enabled = False
        modelNameComboBox.Enabled = False
        ResultShow("オープン", result)
    End If
End Sub

Private Sub startButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles startButton.Click
    ' データバッファの設定
    result = YdxAoSetBuffer(id, 0)   ' FIFOバッファ
    If result <> 0 Then
        ResultShow("YdxAoSetBuffer", result)
        Exit Sub
    End If

    ' チャネルの設定
    Const CHANNEL_NUM As Integer = 4  ' 4チャネルを有効にする
    For channel As Integer = 0 To CHANNEL_NUM - 1
        result = YdxAoSetChannel(id, channel, 1)
        If result <> 0 Then
            ResultShow("YdxAoSetChannel", result)
            Exit Sub
        End If
    Next

    ' サンプリングクロックの設定
    result = YdxAoSetClock(id, 0)    ' 内部クロック
    If result <> 0 Then
        ResultShow("YdxAoSetClock", result)
        Exit Sub
    End If

    ' 内部クロック周期の設定
    result = YdxAoSetClockInternal(id, 1000) ' 1000μsec
    If result <> 0 Then
        ResultShow("YdxAoSetClockInternal", result)
        Exit Sub
    End If

    ' データの設定
    Const SAMPLE_NUM As Integer = 1000  ' サンプル数
    Dim data(SAMPLE_NUM * CHANNEL_NUM) As Single   ' データ個数は、サンプル数 * 有効チャネル数
    For i As Integer = 0 To SAMPLE_NUM - 1
        Dim waveData As Single = CType(10 * Math.Sin(2 * Math.PI * i / SAMPLE_NUM), Single)    ' 正弦波
        For channel As Integer = 0 To CHANNEL_NUM - 1
            data(i * CHANNEL_NUM + channel) = waveData
        Next
    Next
    result = YdxAoSetDataVolt(id, SAMPLE_NUM, data)
    If result <> 0 Then
        ResultShow("YdxAoSetDataVolt", result)
        Exit Sub
    End If

    ' サンプリング開始条件の設定
    result = YdxAoSetStartCondition(id, 0, 0)   ' ソフトウェア
    If result <> 0 Then
        ResultShow("YdxAoSetStartCondition", result)
        Exit Sub
    End If

    ' サンプリング停止条件の設定
    result = YdxAoSetStopCondition(id, 0, 0)    ' データ終了
    If result <> 0 Then
        ResultShow("YdxAoSetStopCondition", result)
        Exit Sub
    End If

    ' イベントオブジェクト作成
    Dim hEvent As AutoResetEvent = New AutoResetEvent(False)

    ' イベントの設定
    result = YdxAoSetEvent(id, _
        YDX_EVENT_COMMUNICATE_ERR Or _
        YDX_EVENT_HARDWARE_ERR Or _
        YDX_EVENT_SAMPLE_CLOCK_ERR Or _
        YDX_EVENT_STOP, _
        hEvent.Handle)
    If result <> 0 Then
        ResultShow("YdxAoSetEvent", result)
        hEvent.Close()
        Exit Sub
    End If

    ' アナログ出力動作を開始
    result = YdxAoStart(id)
    If result <> 0 Then
        ResultShow("YdxAoStart", result)
        hEvent.Close()
        Exit Sub
    End If

    ' イベント発生待ち
    hEvent.WaitOne()
    hEvent.Close()

    ' ステータスの取得
    Dim factor, sampleCount, repeatCount, notOutNum As Integer
    result = YdxAoGetEventStatus(id, factor, sampleCount, repeatCount, notOutNum)
    If result <> 0 Then
        ResultShow("YdxAoGetEventStatus", result)
        Exit Sub
    End If

    If (factor And YDX_STATUS_COMMUNICATE_ERR) <> 0 Then
        MessageBox.Show("通信エラーが発生しました", "", MessageBoxButtons.OK, MessageBoxIcon.Hand)
        Exit Sub
    End If

    If (factor And YDX_STATUS_HARDWARE_ERR) <> 0 Then
        MessageBox.Show("ハードウェアエラーが発生しました", "", MessageBoxButtons.OK, MessageBoxIcon.Hand)
        Exit Sub
    End If

    If (factor And YDX_STATUS_SAMPLE_CLOCK_ERR) <> 0 Then
        MessageBox.Show("サンプリングクロックエラーが発生しました", "", MessageBoxButtons.OK, MessageBoxIcon.Hand)
        Exit Sub
    End If

    ResultShow("アナログ出力", 0)
End Sub

Private Sub closeButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles closeButton.Click
    unitSwitchComboBox.Enabled = True
    modelNameComboBox.Enabled = True
    result = YdxClose(id)
    If result <> 0 Then
        ResultShow("YdxClose", result)
    Else
        ResultShow("クローズ", result)
    End If
End Sub

Private Sub Form1_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
    result = YdxClose(id)
    If result <> 0 And result <> YDX_RESULT_NOT_OPEN Then
        ResultShow("YdxClose", result)
    End If
End Sub