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InkAnalyzer.GetNodesFromTextRange 方法 (Int32%, Int32%)

傳回 ContextNodeCollection，其中包含屬於指定之文字範圍的 ContextNode 物件。

命名空間：  System.Windows.Ink
組件：  IAWinFX (在 IAWinFX.dll 中)

語法

'宣告
Public Function GetNodesFromTextRange ( _
    ByRef start As Integer, _
    ByRef length As Integer _
) As ContextNodeCollection
'用途
Dim instance As InkAnalyzer
Dim start As Integer
Dim length As Integer
Dim returnValue As ContextNodeCollection

returnValue = instance.GetNodesFromTextRange(start, _
    length)

public ContextNodeCollection GetNodesFromTextRange(
    ref int start,
    ref int length
)

public:
ContextNodeCollection^ GetNodesFromTextRange(
    int% start, 
    int% length
)

public ContextNodeCollection GetNodesFromTextRange(
    /** @ref */int start,
    /** @ref */int length
)

public function GetNodesFromTextRange(
    start : int, 
    length : int
) : ContextNodeCollection

參數

傳回值

型別：System.Windows.Ink.ContextNodeCollection
ContextNode 物件集合，這些物件都與指定的文字範圍相關聯。

備註

指定的文字範圍應該與整個 InkAnalyzer 的已辨識字串相關聯。

這個方法會將文字範圍擴充至最接近的文字界限，修改 start 和 length 參數的值。例如，已辨識的字串為 "I am late"，您便可以設定 start = 6 和 length = 1 兩個參數值 (表示對應於 "late" 的 "a" 這個字母)，並呼叫這個方法。方法會傳回由單一 ContextNode (即 InkWordNode 或 TextWordNode) 所組成的集合。在這個範例中，這個方法也會將 start 的值修改為 5 並將 length 的值修改為 4 (表示對應於 "late" 一字)。

範例

這個範例會重設 TextBox (名為 theResultsTextBox) 的 Text 屬性，將它從 InkAnalyzer (theInkAnalyzer) 的 GetRecognizedString() 所傳回的值設定為文字方塊選取範圍中，標示對應於文字方塊選取範圍之 Strokes 的新值。

' Find out what's been selected in the text box
Dim selStart As Integer = theResultsTextBox.SelectionStart
Dim selLength As Integer = theResultsTextBox.SelectionLength

' Get the nodes that correspond to that range
Dim selectedSubNodes As ContextNodeCollection = _
    Me.theInkAnalyzer.GetNodesFromTextRange(selStart, selLength)

' Use the new start and length value to update the
' selection in the TextBox
theResultsTextBox.SelectionStart = selStart
theResultsTextBox.SelectionLength = selLength

' First, set all strokes to black
For Each theStroke As Stroke In Me.theInkAnalyzer.RootNode.Strokes
    theStroke.DrawingAttributes.Color = Colors.Black
Next theStroke

' Next, set all selected sub nodes to red
For Each theContextNode As ContextNode In selectedSubNodes
    For Each theStroke As Stroke In theContextNode.Strokes
        theStroke.DrawingAttributes.Color = Colors.Red
    Next theStroke
Next theContextNode

// Find out what's been selected in the text box
int selStart = theResultsTextBox.SelectionStart;
int selLength = theResultsTextBox.SelectionLength;

// Get the nodes that correspond to that range
ContextNodeCollection selectedSubNodes =
    this.theInkAnalyzer.GetNodesFromTextRange(
        ref selStart, ref selLength);

// Use the new start and length value to update the
// selection in the TextBox
theResultsTextBox.SelectionStart = selStart;
theResultsTextBox.SelectionLength = selLength;

// First, set all strokes to black
foreach (Stroke theStroke
    in this.theInkAnalyzer.RootNode.Strokes)
{
    theStroke.DrawingAttributes.Color = Colors.Black;
}

// Next, set all selected sub nodes to red
foreach (ContextNode theContextNode in selectedSubNodes)
{
    foreach (Stroke theStroke in theContextNode.Strokes)
    {
        theStroke.DrawingAttributes.Color = Colors.Red;
    }
}

平台

Windows Vista

.NET Framework 和 .NET Compact Framework 並不支援各種平台的所有版本。如需支援平台版本的相關資訊，請參閱 .NET Framework 系統需求。

版本資訊

.NET Framework

支援版本：3.0

請參閱

參考

InkAnalyzer 類別

InkAnalyzer 成員

GetNodesFromTextRange 多載

System.Windows.Ink 命名空間

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