IncrementalHitTester.IsValid Property

Definition

Namespace:

System.Windows.Ink

Assembly:

PresentationCore.dll

Gets whether the IncrementalHitTester is hit testing.

public:
 property bool IsValid { bool get(); };

public bool IsValid { get; }

member this.IsValid : bool

Public ReadOnly Property IsValid As Boolean

Property Value

Boolean

true if the IncrementalHitTester is hit testing; otherwise, false.

Examples

The following example demonstrates how to check whether the IncrementalHitTester is valid before adding points to it. This example assumes that there is an IncrementalHitTester called eraseTester.

// Collect the StylusPackets as the stylus moves.
protected override void OnStylusMove(StylusEventArgs e)
{
    if (eraseTester.IsValid)
    {
        eraseTester.AddPoints(e.GetStylusPoints(this));
    }
}

' Collect the StylusPackets as the stylus moves.
Protected Overrides Sub OnStylusMove(ByVal e As StylusEventArgs)

    If eraseTester.IsValid Then
        eraseTester.AddPoints(e.GetStylusPoints(Me))
    End If

End Sub

Remarks

The IsValid returns true until EndHitTesting is called. Then it returns false.