傳回子代 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。
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 LineNode
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
指定的文字範圍應該相對於這個 LineNode 的已辨識字串,而不是整個 RootNode 的已辨識字串。
start 和 length 參數都是參考,因為它們的值可以變更。例如,GetRecognizedString 的傳回值為 "I am late",而且您傳入 start = 6 和 length = 1 兩個值 (表示對應於 "a" 這個字母),則 ContextNodeCollection 可能只有一個 ContextNode,這是對應於 "late" 一字的 InkWordNode。在此情況下,start 的值會變更為 5,而且 length 的值會變更為 4,表示對應於 "late" 這一整個字。
範例
下列範例會採用 TextBox (英文) (selectedResultsTextBox),它的 TextBox.Text (英文) 屬性先前已設定為 LineNode (line) 之 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 start As Integer = selectedResultsTextBox.SelectionStart
Dim length As Integer = selectedResultsTextBox.SelectionLength
' Return if no text is selected.
If start = 0 Then
Return
End If
' Get the nodes that correspond to that range
Dim selectedNodes As ContextNodeCollection
selectedNodes = line.GetNodesFromTextRange(start, length)
' Use the new start and length value to update the
' selection in the TextBox
selectedResultsTextBox.SelectionStart = start
selectedResultsTextBox.SelectionLength = length
' Color the strokes red if part of the selected words.
' Otherwise, color them black.
For Each node As ContextNode In line.SubNodes
Dim inkStroke As Stroke
For Each inkStroke In node.Strokes
If selectedNodes.Contains(node) Then
inkStroke.DrawingAttributes = New DrawingAttributes(Color.Red)
Else
inkStroke.DrawingAttributes = New DrawingAttributes(Color.Black)
End If
Next inkStroke
Next node
// Find out what's been selected in the text box
int start = selectedResultsTextBox.SelectionStart;
int length = selectedResultsTextBox.SelectionLength;
// Return if no text is selected.
if (length == 0)
return;
// Get the nodes that correspond to that range
ContextNodeCollection selectedNodes =
line.GetNodesFromTextRange(ref start, ref length);
// Use the new start and length value to update the
// selection in the TextBox
selectedResultsTextBox.SelectionStart = start;
selectedResultsTextBox.SelectionLength = length;
// Color the strokes red if part of the selected words.
// Otherwise, color them black.
foreach (ContextNode node in line.SubNodes)
{
foreach (Stroke stroke in node.Strokes)
{
if (selectedNodes.Contains(node))
{
stroke.DrawingAttributes =
new DrawingAttributes(Color.Red);
}
else
{
stroke.DrawingAttributes =
new DrawingAttributes(Color.Black);
}
}
}
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