共用方式為


InkAnalyzerBase.FindNodes 方法 (MatchesCriteriaBaseCallback, Object)

傳回符合所指定準則的所有 ContextNodeBase 物件。

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

語法

'宣告
Public Function FindNodes ( _
    criteria As MatchesCriteriaBaseCallback, _
    data As Object _
) As ContextNodeBaseCollection
'用途
Dim instance As InkAnalyzerBase
Dim criteria As MatchesCriteriaBaseCallback
Dim data As Object
Dim returnValue As ContextNodeBaseCollection

returnValue = instance.FindNodes(criteria, _
    data)
public ContextNodeBaseCollection FindNodes(
    MatchesCriteriaBaseCallback criteria,
    Object data
)
public:
ContextNodeBaseCollection^ FindNodes(
    MatchesCriteriaBaseCallback^ criteria, 
    Object^ data
)
public ContextNodeBaseCollection FindNodes(
    MatchesCriteriaBaseCallback criteria,
    Object data
)
public function FindNodes(
    criteria : MatchesCriteriaBaseCallback, 
    data : Object
) : ContextNodeBaseCollection

參數

  • data
    型別:System.Object
    可傳至委派函式的其他選擇性資料。這個方法會隨每次呼叫將這項資料傳遞至委派,而且不會進行修改或檢查。

傳回值

型別:System.Windows.Ink.AnalysisCore.ContextNodeBaseCollection
ContextNodeBaseCollection ,包含符合所指定準則的所有 ContextNodeBase 物件。

範例

下列範例會使用整數 yValue,在 InkAnalyzerBase (theInkAnalyzerBase) 中尋找符合 MatchesCriteriaBaseCallback 委派 (Delegate) 函式中指定之準則的 LineIsLowerThanContextNodeBase 物件集合。

Dim lineIsLowerThanCallback As _
    New System.Windows.Ink.AnalysisCore.MatchesCriteriaBaseCallback(AddressOf LineIsLowerThan)
Dim nodesBelowYValue As ContextNodeBaseCollection = _
    theInkAnalyzerBase.FindNodes(lineIsLowerThanCallback, yValue)
System.Windows.Ink.AnalysisCore.MatchesCriteriaBaseCallback
    lineIsLowerThanCallback = new System.Windows.Ink.AnalysisCore.MatchesCriteriaBaseCallback(LineIsLowerThan);
ContextNodeBaseCollection nodesBelowYValue =
    theInkAnalyzerBase.FindNodes(lineIsLowerThanCallback, yValue);

下列範例會定義 LineIsLowerThan 方法。如果 ContextNodeBaseLine 型別,而且週框方塊的底端低於傳入的整數,則該方法會傳回 true (請注意,Y 值越高,在螢幕上出現的位置就越低)。因此,nodesBelowYValue 集合包含的所有行中,筆劃都會低於 yValue 值。

Public Function LineIsLowerThan( _
    ByVal nodeBase As System.Windows.Ink.AnalysisCore.ContextNodeBase, _
    ByVal data As Object) As Boolean

    ' Return false if not a line
    If nodeBase.Type <> System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.Line Then
        Return False
    End If
    ' Check if bottom is lower than yValue passed in
    Dim yValue As Integer = Fix(data)
    Return nodeBase.Location.GetBounds()(3) > yValue

End Function 'LineIsLowerThan
public bool LineIsLowerThan(System.Windows.Ink.AnalysisCore.ContextNodeBase nodeBase, object data)
{
    // Return false if not a line
    if (!(nodeBase.Type == System.Windows.Ink.AnalysisCore.ContextNodeTypeBase.Line))
        return false;

    // Check if bottom is lower than yValue passed in
    int yValue = (int)data;
    return (nodeBase.Location.GetBounds()[3] > yValue);

}

平台

Windows Vista, Windows XP SP2, Windows Server 2003

.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

InkAnalyzerBase 類別

InkAnalyzerBase 成員

FindNodes 多載

System.Windows.Ink.AnalysisCore 命名空間