RecognitionAlternate.LineAlternates, propriété

Article
11/05/2008

Mise à jour : November 2007

Obtient la collection RecognitionAlternates dans laquelle chaque proposition de substitution se trouve sur une ligne distincte.

Espace de noms : Microsoft.Ink
Assembly : Microsoft.Ink (dans Microsoft.Ink.dll)

Syntaxe

'Déclaration
Public ReadOnly Property LineAlternates As RecognitionAlternates
'Utilisation
Dim instance As RecognitionAlternate
Dim value As RecognitionAlternates

value = instance.LineAlternates

public RecognitionAlternates LineAlternates { get; }

public:
property RecognitionAlternates^ LineAlternates {
    RecognitionAlternates^ get ();
}

/** @property */
public RecognitionAlternates get_LineAlternates()

public function get LineAlternates () : RecognitionAlternates

Valeur de propriété

Type : Microsoft.Ink.RecognitionAlternates
Collection RecognitionAlternates dans laquelle chaque proposition de substitution se trouve sur une ligne distincte.

Notes

Si vous obtenez une proposition de substitution de reconnaissance pour un paragraphe manuscrit, vous pouvez utiliser la propriété LineAlternates pour obtenir une collection de propositions de reconnaissance dans laquelle chaque proposition représente une ligne distincte du paragraphe.

Cette propriété est une alternative à l'appel à la méthode AlternatesWithConstantPropertyValues en affectant la valeur LineNumber au paramètre. Pour plus d'informations sur les propriétés des propositions de substitution, consultez la classe RecognitionProperty.

Remarque :
L'objet Recognizer détermine automatiquement les métriques de ligne lors du traçage de l'entrée manuscrite.

Exemples

Cet exemple C# définit les gestionnaires d'événements pour un formulaire, RecognitionResultForm, auquel un contrôle ListBox (page pouvant être en anglais), theListBox, et deux contrôles Button (page pouvant être en anglais), theRecognizeButton et theGetDataButton ont été ajoutés. L'exemple définit également un InkCollector, theInkCollector, un RecognizerContext, theRecognizerContext et un RecognitionResult, theRecognitionResult, utilisés pour collecter l'entrée manuscrite et exécuter la reconnaissance.

Le gestionnaire d'événements pour l'événement Click du theRecognizeButton exécute la reconnaissance sur les traits dans le collecteur d'entrée manuscrite et fournit des informations sur la meilleure proposition de substitution des résultats de la reconnaissance dans theListBox.

Le gestionnaire d'événements pour l'événement Click du theGetDataButton obtient la collection de propositions de ligne pour la meilleure proposition de substitution. Le gestionnaire dessine ensuite les ascendantes, la ligne médiane, la ligne de base et les descendantes pour chaque proposition de substitution de ligne. Le gestionnaire inclut également des informations sur le numéro et la fiabilité de chaque proposition de substitution de ligne dans theListBox.

[C#]

// Declare ink elements and create pens.
Microsoft.Ink.InkCollector theInkCollector;
Microsoft.Ink.RecognizerContext theRecognizerContext;
Microsoft.Ink.RecognitionResult theRecognitionResult;

System.Drawing.Pen thePen1 = new Pen(Color.Red);
System.Drawing.Pen thePen2 = new Pen(Color.Orange);
System.Drawing.Pen thePen3 = new Pen(Color.Yellow);
System.Drawing.Pen thePen4 = new Pen(Color.Green);

// Event handler for the form's Load event.
private void RecognitionResultForm_Load(object sender, System.EventArgs e)
{
    // Create the ink collector.
    this.theInkCollector = new Microsoft.Ink.InkCollector(this.Handle);
    this.theInkCollector.Enabled = true;

    // Create the default recognizer context.
    this.theRecognizerContext = new Microsoft.Ink.RecognizerContext();
}

// Event handler for the "Recognize" button's Click event.
private void theRecognizeButton_Click(object sender, System.EventArgs e)
{
    // Check for ink before performing recognition.
    this.theListBox.Items.Clear();
    if (0 == this.theInkCollector.Ink.Strokes.Count)
    {
        this.theListBox.Items.Add("No ink to recognize.");
        return;
    }

    // Perform recognition on the strokes currently in the ink collector.
    Microsoft.Ink.RecognitionStatus theRecognitionStatus;
    this.theRecognizerContext.Strokes = this.theInkCollector.Ink.Strokes;
    this.theRecognitionResult =
        this.theRecognizerContext.Recognize(out theRecognitionStatus);

    // Display information about the recognition result in the list box.
    this.theListBox.Items.Add("The top alternate is: " +
        this.theRecognitionResult.TopString);
    this.theListBox.Items.Add("The top confidence is: " +
        this.theRecognitionResult.TopConfidence);
    this.theListBox.Items.Add("The number of strokes is:" +
        this.theRecognitionResult.Strokes.Count);
}

// Event handler for the "Get Data" button's Click event.
private void theGetDataButton_Click(object sender, System.EventArgs e)
{
    // Refresh the list box and check for a recognition result.
    this.theListBox.Items.Clear();
    if (null == this.theRecognitionResult)
    {
        this.theListBox.Items.Add("No recognition result available.");
        return;
    }

    // Get the line alternates collection for the top alternate.
    Microsoft.Ink.RecognitionAlternates theLineAlternates =
        this.theRecognitionResult.TopAlternate.LineAlternates;

    using (System.Drawing.Graphics g = this.CreateGraphics())
    {
        // Clear the drawing surface
        g.Clear(this.BackColor);

        // For each line alternate in the collection:
        foreach(Microsoft.Ink.RecognitionAlternate theAlternate
                    in theLineAlternates)
        {
            // Add information about the alternate to the list box.
            this.theListBox.Items.Add("The Line Number is: " +
                theAlternate.LineNumber.ToString());
            this.theListBox.Items.Add("The alternate's text is: " +
                theAlternate.ToString());
            this.theListBox.Items.Add("The number of strokes is: " +
                theAlternate.Strokes.Count);
            this.theListBox.Items.Add("The Confidence is: " +
                theAlternate.Confidence.ToString());

            // Draw the ascender, midline, baseline, and descender.
            DrawLine(g, theAlternate.Ascender, this.thePen1);
            DrawLine(g, theAlternate.Midline, this.thePen2);
            DrawLine(g, theAlternate.Baseline, this.thePen3);
            DrawLine(g, theAlternate.Descender, this.thePen4);

            this.theListBox.Items.Add(string.Empty);
        }

        // Redraw the ink.
        this.theInkCollector.Renderer.Draw(g, this.theRecognitionResult.Strokes);
    }
}

// Event handler for the form's Closed event.
private void RecognitionResultForm_Closed(object sender, System.EventArgs e)
{
    // Free the resources for the ink collector, recognizer context, and pens.
    this.theInkCollector.Dispose();
    this.theInkCollector = null;
    this.theRecognizerContext.Dispose();
    this.theRecognizerContext = null;

    this.thePen1.Dispose();
    this.thePen1 = null;
    this.thePen2.Dispose();
    this.thePen2 = null;
    this.thePen3.Dispose();
    this.thePen3 = null;
    this.thePen4.Dispose();
    this.thePen4 = null;
}

// Helper function to draw the lines.
private void DrawLine(System.Drawing.Graphics g,
    Microsoft.Ink.Line line, System.Drawing.Pen pen)
{
    System.Drawing.Point point1 = line.BeginPoint;
    System.Drawing.Point point2 = line.EndPoint;

    this.theInkCollector.Renderer.InkSpaceToPixel(g, ref point1);
    this.theInkCollector.Renderer.InkSpaceToPixel(g, ref point2);

    g.DrawLine(pen, point1, point2);
}

Cet exemple Microsoft® Visual Basic® .NET définit des gestionnaires d'événements pour un formulaire, RecognitionResultForm, auquel un contrôle ListBox (page pouvant être en anglais), theListBox, et deux contrôles Button (page pouvant être en anglais), theRecognizeButton et theGetDataButton, ont été ajoutés. L'exemple définit également un InkCollector, theInkCollector, un RecognizerContext, theRecognizerContext et un RecognitionResult, theRecognitionResult, utilisés pour collecter l'entrée manuscrite et exécuter la reconnaissance.

[Visual Basic]

    Dim theInkCollector As Microsoft.Ink.InkCollector
    Dim theRecognizerContext As Microsoft.Ink.RecognizerContext
    Dim theRecognitionResult As Microsoft.Ink.RecognitionResult

    Dim thePen1 As System.Drawing.Pen = New Pen(Color.Red)
    Dim thePen2 As System.Drawing.Pen = New Pen(Color.Orange)
    Dim thePen3 As System.Drawing.Pen = New Pen(Color.Yellow)
    Dim thePen4 As System.Drawing.Pen = New Pen(Color.Green)

    ' Event handler for the form's Load event.
    Private Sub RecognitionResultForm_Load(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles MyBase.Load

        ' Create the ink collector.
        Me.theInkCollector = New Microsoft.Ink.InkCollector(Me.Handle)
        Me.theInkCollector.Enabled = True

        ' Create the default recognizer context.
        Me.theRecognizerContext = New Microsoft.Ink.RecognizerContext
    End Sub

    ' Event handler for the "Recognize" button's Click event.
    Private Sub theRecognizeButton_Click(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles theRecognizeButton.Click

        ' Check for ink before performing recognition.
        Me.theListBox.Items.Clear()
        If Me.theInkCollector.Ink.Strokes.Count = 0 Then
            Me.theListBox.Items.Add("No ink to recognize.")
            Return
        End If

        ' Perform recognition on the strokes currently in the ink collector.
        Dim theRecognitionStatus As Microsoft.Ink.RecognitionStatus
        Me.theRecognizerContext.Strokes = Me.theInkCollector.Ink.Strokes
        Me.theRecognitionResult = _
            Me.theRecognizerContext.Recognize(theRecognitionStatus)

        ' Display information about the recognition result in the list box.
        Me.theListBox.Items.Add("The top alternate is: " & _
                                    theRecognitionResult.TopString)
        Me.theListBox.Items.Add("The top confidence is: " & _
                                    theRecognitionResult.TopConfidence.ToString())
        Me.theListBox.Items.Add("The number of strokes is:" & _
                                    theRecognitionResult.Strokes.Count)
    End Sub

    ' Event handler for the "Get Data" button's Click event.
    Private Sub theGetDataButton_Click(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles theGetDataButton.Click

        ' Refresh the list box and check for a recognition result.
        Me.theListBox.Items.Clear()
        If (Me.theRecognitionResult Is Nothing) Then
            Me.theListBox.Items.Add("No recognition result available.")
            Return
        End If

        ' Get the line alternates collection for the top alternate.
        Dim theLineAlternates As Microsoft.Ink.RecognitionAlternates = _
            Me.theRecognitionResult.TopAlternate.LineAlternates()

        ' Create a temporary graphics object.
        Dim g As System.Drawing.Graphics = Me.CreateGraphics()

        ' Clear the drawing surface
        g.Clear(Me.BackColor)

        ' For each line alternate in the collection:
        For Each theAlternate As Microsoft.Ink.RecognitionAlternate _
                    In theLineAlternates

            ' Add information about the alternate to the list box.
            Me.theListBox.Items.Add("The Line Number is: " & _
                theAlternate.LineNumber.ToString())
            Me.theListBox.Items.Add("The alternate's text is: " & _
                theAlternate.ToString())
            Me.theListBox.Items.Add("The number of strokes is: " & _
                theAlternate.Strokes.Count)
            Me.theListBox.Items.Add("The Confidence is: " & _
                theAlternate.Confidence.ToString())

            ' Draw the ascender, midline, baseline, and descender.
            DrawLine(g, theAlternate.Ascender, Me.thePen1)
            DrawLine(g, theAlternate.Midline, Me.thePen2)
            DrawLine(g, theAlternate.Baseline, Me.thePen3)
            DrawLine(g, theAlternate.Descender, Me.thePen4)

            Me.theListBox.Items.Add(String.Empty)
        Next

        ' Redraw the ink.
        Me.theInkCollector.Renderer.Draw(g, Me.theRecognitionResult.Strokes)

        ' Dispose of the graphics object.
        g.Dispose()
    End Sub

    ' Event handler for the form's Closed event.
    Private Sub RecognitionResultForm_Closed(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles MyBase.Closed

        ' Free the resources for the ink collector and recognizer context.
        Me.theInkCollector.Dispose()
        Me.theInkCollector = Nothing
        Me.theRecognizerContext.Dispose()
        Me.theRecognizerContext = Nothing

        Me.thePen1.Dispose()
        Me.thePen1 = Nothing
        Me.thePen2.Dispose()
        Me.thePen2 = Nothing
        Me.thePen3.Dispose()
        Me.thePen3 = Nothing
        Me.thePen4.Dispose()
        Me.thePen4 = Nothing
    End Sub

    ' Helper function to draw the lines.
    Private Sub DrawLine(ByVal g As System.Drawing.Graphics, _
        ByVal line As Microsoft.Ink.Line, ByVal pen As System.Drawing.Pen)

        Dim point1 As System.Drawing.Point = line.BeginPoint
        Dim point2 As System.Drawing.Point = line.EndPoint

        Me.theInkCollector.Renderer.InkSpaceToPixel(g, point1)
        Me.theInkCollector.Renderer.InkSpaceToPixel(g, point2)

        g.DrawLine(pen, point1, point2)
    End Sub

Plateformes

Windows Vista

Le .NET Framework et le .NET Compact Framework ne prennent pas en charge toutes les versions de chaque plateforme. Pour obtenir la liste des versions prises en charge, consultez Configuration requise du .NET Framework.