WritingRegionNode.GetNodesFromTextRange 方法 (Int32%, Int32%)

傳回已辨識字串中指定之文字範圍內的子代 ContextNode 物件集合。

命名空間：  Microsoft.Ink
組件：  Microsoft.Ink.Analysis (在 Microsoft.Ink.Analysis.dll 中)

語法

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

• start
  型別：System.Int32%
  已辨識字串中文字範圍的起點。

• length
  型別：System.Int32%
  已辨識字串中文字範圍的長度。

傳回值

型別：Microsoft.Ink.ContextNodeCollection
子代 ContextNode 物件集合，這些物件都與已辨識字串中指定的文字範圍相關聯。

備註

指定的文字範圍相對於這個 WritingRegionNode，而不是整個 RootNode 的已辨識字串。

範例

下列範例會取得 TextBox (英文) selectedResultsTextBox，它的 Text (英文) 屬性先前已設定為 WritingRegionNodewritingRegion 的 GetRecognizedString 所傳回的值。使用者已選取 TextBox (英文) 中的部分文字。這個範例程式碼會採用該選取範圍，並且將與其對應的 Strokes 加上標記。

' Find out what's been selected in the text box
Dim selectionStart As Integer = selectedResultsTextBox.SelectionStart
Dim selectionLength As Integer = selectedResultsTextBox.SelectionLength

' Return if no text is selected.
' selectionLength must be > 0 or GetNodesFromTextRange(...) 
' will throw an ArgumentOutOfRangeException
If selectionLength = 0 Then
    Return
End If

' Get the nodes that correspond to that range
Dim selectedRegionSubNodes As ContextNodeCollection = _
    writingRegion.GetNodesFromTextRange(selectionStart, selectionLength)

' Use the new start and length value to update the
' selection in the TextBox
selectedResultsTextBox.SelectionStart = selectionStart
selectedResultsTextBox.SelectionLength = selectionLength

' First, set all strokes to black
Dim inkStroke As Stroke
For Each inkStroke In writingRegion.Strokes
    inkStroke.DrawingAttributes = New DrawingAttributes(Color.Black)
Next inkStroke
' Next, set all selected sub nodes to red
Dim node As ContextNode
For Each node In selectedRegionSubNodes
    For Each inkStroke In node.Strokes
        inkStroke.DrawingAttributes = New DrawingAttributes(Color.Red)
    Next inkStroke
Next node

                    // Find out what's been selected in the text box
                    int selectionStart = selectedResultsTextBox.SelectionStart;
                    int selectionLength = selectedResultsTextBox.SelectionLength;

                    // Return if no text is selected.
                    // selectionLength must be > 0 or GetNodesFromTextRange(...) 
                    // will throw an ArgumentOutOfRangeException
                    if (selectionLength == 0)
                        return;

                    // Get the nodes that correspond to that range
                    ContextNodeCollection selectedRegionSubNodes =
                            writingRegion.GetNodesFromTextRange(ref selectionStart, ref selectionLength);


                    // Use the new start and length value to update the
                    // selection in the TextBox
                    selectedResultsTextBox.SelectionStart = selectionStart;
                    selectedResultsTextBox.SelectionLength = selectionLength;

                    // First, set all strokes to black
                    foreach (Stroke stroke in writingRegion.Strokes)
                        stroke.DrawingAttributes =
                                    new DrawingAttributes(Color.Black);
                    // Next, set all selected sub nodes to red
                    foreach (ContextNode node in selectedRegionSubNodes)
                    {
                        foreach (Stroke stroke in node.Strokes)
                        {
                            stroke.DrawingAttributes =
                                    new DrawingAttributes(Color.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

WritingRegionNode 類別

WritingRegionNode 成員

GetNodesFromTextRange 多載

Microsoft.Ink 命名空間