IncrementalHitTester.IsValid Property

Reference

Definition

Namespace:: System.Windows.Ink

Assembly:: PresentationCore.dll

Important

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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.

Applies to

Product	Versions
.NET Framework	3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop	3.0, 3.1, 5, 6, 7, 8, 9, 10

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