LineNode.GetTextRangeFromNodes Method

아티클
12/12/2007

Finds the text range in the recognized string that corresponds to a collection of ContextNode objects that are descendants of the LineNode.

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

Syntax

'Declaration
Public Sub GetTextRangeFromNodes ( _
    subTree As ContextNodeCollection, _
    <OutAttribute> ByRef start As Integer, _
    <OutAttribute> ByRef length As Integer _
)
'Usage
Dim instance As LineNode
Dim subTree As ContextNodeCollection
Dim start As Integer
Dim length As Integer

instance.GetTextRangeFromNodes(subTree, start, length)

public void GetTextRangeFromNodes (
    ContextNodeCollection subTree,
    out int start,
    out int length
)

public:
void GetTextRangeFromNodes (
    ContextNodeCollection^ subTree, 
    [OutAttribute] int% start, 
    [OutAttribute] int% length
)

public void GetTextRangeFromNodes (
    ContextNodeCollection subTree, 
    /** @attribute OutAttribute() */ /** @ref */ int start, 
    /** @attribute OutAttribute() */ /** @ref */ int length
)

Not applicable.

Parameters

subTree
The collection of ContextNode objects that are descendants of the LineNode.

start
The start of the text range.

length
The length of the text range.

Remarks

If the subTree contains a ContextNode object that is not a descendant of the LineNode, then an ArgumentException exception is thrown.

If the subTree contains ContextNode objects that are not consecutive, then the smallest text range that covers all of the ContextNode objects is returned.

Example

The following example takes an InkWordNode, inkWord, and checks to see if ParentNode is a LineNode. If it is, then it puts the value of GetRecognizedString into a TextBox, selectedResultsTextBox, and then selects the text that corresponds to inkWord.

Dim parentNode As ContextNode = inkWord.ParentNode
If TypeOf parentNode Is LineNode Then
    Dim parentLine As LineNode = CType(parentNode, LineNode)
    ' Put parent line's recognized string into the text box
    selectedResultsTextBox.Text = parentLine.GetRecognizedString()

    ' Select the text that corresponds to the ink word
    Dim subNodes As New ContextNodeCollection(theInkAnalyzer)
    subNodes.Add(inkWord)
    Dim start As Integer
    Dim length As Integer
    parentLine.GetTextRangeFromNodes(subNodes, start, length)
    If start >= 0 AndAlso length > 0 Then
        selectedResultsTextBox.Select(start, length)
    End If
End If

ContextNode parentNode = inkWord.ParentNode;
if (parentNode is LineNode)
{
    LineNode parentLine = (LineNode)parentNode;
    // Put parent line's recognized string into the text box
    selectedResultsTextBox.Text = parentLine.GetRecognizedString();

    // Select the text that corresponds to the ink word
    ContextNodeCollection subNodes = new ContextNodeCollection(theInkAnalyzer);
    subNodes.Add(inkWord);
    int start;
    int length;
    parentLine.GetTextRangeFromNodes(subNodes, out start, out length);
    if (start >= 0 && length > 0)
    {
        selectedResultsTextBox.Select(start, length);
    }
}

Platforms

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

Version Information

.NET Framework

Supported in: 3.0

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