InkAnalyzer.FindInkLeafNodes 方法

项目
11/04/2008

返回一个包含所有墨迹叶节点（墨迹叶节点是包含墨迹笔画的 ContextNode 对象）的 ContextNodeCollection。

命名空间： System.Windows.Ink
程序集： IAWinFX（在 IAWinFX.dll 中）

语法

声明
Public Function FindInkLeafNodes As ContextNodeCollection
用法
Dim instance As InkAnalyzer
Dim returnValue As ContextNodeCollection

returnValue = instance.FindInkLeafNodes()

public ContextNodeCollection FindInkLeafNodes()

public:
ContextNodeCollection^ FindInkLeafNodes()

public ContextNodeCollection FindInkLeafNodes()

public function FindInkLeafNodes() : ContextNodeCollection

返回值

类型：System.Windows.Ink.ContextNodeCollection
包含 ContextNode 对象（这些对象又包含墨迹笔画）的所有墨迹叶节点。

备注

墨迹叶节点示例包括 InkWordNode、InkDrawingNode 和 InkBulletNode。

叶节点不包含子节点。

示例

下面的示例遍历名为 theInkAnalyzer 的 InkAnalyzer 的所有墨迹叶节点，以查找下边界最低的 ContextNode。找到下边界最低的节点后，将与该最低 ContextNode 关联的笔画设为红色。

Dim lowest As Double = Double.MinValue
Dim lowestNode As ContextNode = Nothing
Dim leafNode As ContextNode
For Each leafNode In  theInkAnalyzer.FindInkLeafNodes()
    ' Find lowest node
    If leafNode.Location.GetBounds().Bottom > lowest Then
        lowestNode = leafNode
        lowest = leafNode.Location.GetBounds().Bottom
    End If
    ' Set each stroke to black
    Dim stroke As Stroke
    For Each stroke In  leafNode.Strokes
        stroke.DrawingAttributes.Color = Colors.Black
    Next stroke
Next leafNode
' Set lowest stroke to red
If Not (lowestNode Is Nothing) Then
    Dim stroke As Stroke
    For Each stroke In  lowestNode.Strokes
        stroke.DrawingAttributes.Color = Colors.Red
    Next stroke
End If

double lowest = double.MinValue;
ContextNode lowestNode = null;
foreach (ContextNode leafNode in theInkAnalyzer.FindInkLeafNodes())
{
    // Find lowest node
    if (leafNode.Location.GetBounds().Bottom > lowest)
    {
        lowestNode = leafNode;
        lowest = leafNode.Location.GetBounds().Bottom;
    }
    // Set each stroke to black
    foreach (Stroke stroke in leafNode.Strokes)
    {
        stroke.DrawingAttributes.Color = Colors.Black;
    }
}
// Set lowest stroke to red
if (lowestNode != null)
{
    foreach (Stroke stroke in lowestNode.Strokes)
    {
        stroke.DrawingAttributes.Color = Colors.Red;
    }
}