MatchesCriteriaCallback Delegate
Represents a function that is used to evaluate if a ContextNode object meets or fails a specified criteria.
Assembly: Microsoft.Ink.Analysis (in Microsoft.Ink.Analysis.dll)
'Declaration Public Delegate Function MatchesCriteriaCallback ( _ visitingNode As ContextNode, _ data As Object _ ) As Boolean 'Usage Dim instance As New MatchesCriteriaCallback(AddressOf HandlerMethod)
Parameters
- visitingNode
- Type: Microsoft.Ink.ContextNode
The ContextNode object that will be checked against the criteria.
- data
- Type: System.Object
Optional data that can be used for the criteria.
The following example finds the collection of ContextNode objects in an InkAnalyzer, theInkAnalyzer, that satisfies the criteria specified in the MatchesCriteriaCallBack delegate function LineIsLowerThan by using an integer, yValue.
LineIsLowerThan returns a true if the ContextNode is a LineNode and if the bottom of the bounding box is lower than an integer that is passed in. (Remember that higher y values appear lower on the screen.) Therefore, the nodesBelowYValue collection contains all lines with strokes below the value, yValue.
Public Function LineIsLowerThan(ByVal node As Microsoft.Ink.ContextNode, _ ByVal data As Object) As Boolean ' Return false if not a line If Not TypeOf node Is LineNode Then Return False End If ' Check if bottom is lower than yValue passed in Dim yValue As Integer = Fix(data) Return node.Location.GetBounds().Bottom > yValue End Function 'LineIsLowerThan
Windows 7, Windows Vista, Windows Server 2008 R2, Windows Server 2008
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.