ContextNode.IsConfirmed Method

Article
10/19/2012

Returns a Boolean value which indicates whether the current ContextNode has been confirmed with the specified ConfirmationType.

Namespace: System.Windows.Ink
Assembly: IAWinFX (in IAWinFX.dll)

Syntax

'Declaration
Public Function IsConfirmed ( _
    type As ConfirmationType _
) As Boolean
'Usage
Dim instance As ContextNode 
Dim type As ConfirmationType 
Dim returnValue As Boolean 

returnValue = instance.IsConfirmed(type)

public bool IsConfirmed(
    ConfirmationType type
)

public:
bool IsConfirmed(
    ConfirmationType type
)

public function IsConfirmed(
    type : ConfirmationType
) : boolean

Parameters

type
Type: System.Windows.Ink.ConfirmationType

The type of confirmation to perform on the current ContextNode.

Return Value

Type: System.Boolean
true if the ContextNode is confirmed with the specified ConfirmationType; otherwise, false.

Examples

The following example allows the user to indicate which strokes have been analyzed correctly. This example is an event handler for a PreviewMouseUp event on an InkCanvas named theInkCanvas. When the CheckBox named confirmMode is checked, the user clicks a word to confirm it (or to turn off confirmation if the node is already confirmed). The example uses StrokeCollection.HitTest(Point) and FindNodesOfType to find the appropriate nodes. After the nodes are found, the example calls Confirm to toggle the confirmation. Finally, the TreeView is rebuilt to show which nodes have been confirmed and the PreviewMouseUp event is handled.

Sub theInkCanvas_PreviewMouseDown(ByVal sender As Object, ByVal e As System.Windows.Input.MouseButtonEventArgs)

    If Me.confirmMode.IsChecked Then 

        ' Find the ink word nodes that correspond to those strokes 
        Dim position As Point = e.GetPosition(theInkCanvas)
        Dim hitStrokes As StrokeCollection = theInkCanvas.Strokes.HitTest(position)

        Dim selectedNodes As ContextNodeCollection = _
            Me.theInkAnalyzer.FindNodesOfType(ContextNodeType.InkWord, _
            hitStrokes)

        ' Toggle the confirmation type on these nodes 
        Dim selectedNode As ContextNode
        For Each selectedNode In selectedNodes
            If selectedNode.IsConfirmed(ConfirmationType.NodeTypeAndProperties) Then
                selectedNode.Confirm(ConfirmationType.None)
            Else
                selectedNode.Confirm(ConfirmationType.NodeTypeAndProperties)
            End If 
        Next selectedNode

        ' Rebuild the TreeView to show which context nodes are confirmed. 
        Me.BuildTree()

        ' Handle the MouseDown event to prevent the InkCanvas from 
        ' selecting the stroke.
        e.Handled = True 
    End If 

End Sub 'theInkCanvas_PreviewMouseDown

void theInkCanvas_PreviewMouseDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
    if ((bool)this.confirmMode.IsChecked)
    {
        // Find the ink word nodes that correspond to those strokes
        Point position = e.GetPosition(theInkCanvas);
        StrokeCollection hitStrokes = theInkCanvas.Strokes.HitTest(position);

        ContextNodeCollection selectedNodes =
            this.theInkAnalyzer.FindNodesOfType(ContextNodeType.InkWord,
            hitStrokes);

        // Toggle the confirmation type on these nodes 
        foreach (ContextNode selectedNode in selectedNodes)
        {
            if (selectedNode.IsConfirmed(ConfirmationType.NodeTypeAndProperties))
            {
                selectedNode.Confirm(ConfirmationType.None);
            }
            else
            {
                selectedNode.Confirm(ConfirmationType.NodeTypeAndProperties);
            }
        }

        // Rebuild the TreeView to show which context nodes are confirmed. 
        this.BuildTree();

        // Handle the MouseDown event to prevent the InkCanvas from 
        // selecting the stroke.
        e.Handled = true;
    }
}

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Framework

Supported in: 3.0

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