InkCollectorNewInAirPacketsEventArgs.PacketCount, propriété

Article
11/05/2008

Mise à jour : November 2007

Obtient le nombre de paquets in-air reçus.

Espace de noms : Microsoft.Ink
Assembly : Microsoft.Ink (dans Microsoft.Ink.dll)

Syntaxe

'Déclaration
Public ReadOnly Property PacketCount As Integer
'Utilisation
Dim instance As InkCollectorNewInAirPacketsEventArgs
Dim value As Integer

value = instance.PacketCount

public int PacketCount { get; }

public:
property int PacketCount {
    int get ();
}

/** @property */
public int get_PacketCount()

public function get PacketCount () : int

Valeur de propriété

Type : System.Int32
Nombre de paquets in-air reçus.

Notes

Les paquets in-air sont reçus lorsqu'un objet Cursor entre dans la plage de détection physique (proximité) du contexte de la tablette.

Exemples

Dans cet exemple, une instance InkCollectorNewInAirPacketsEventHandler obtient les valeurs X et Y du dernier paquet passé via l'objet InkCollectorNewInAirPacketsEventArgs. X et Y sont toujours les deux premières valeurs des données de paquet.

Private Sub mInkObject_NewInAirPackets2(ByVal sender As Object, ByVal e As InkCollectorNewInAirPacketsEventArgs)
    Dim DescriptorsPerPacket As Integer = 0
    ' determine how many descriptors there are per packet
    ' you could also obtain this value using:
    '   e.PacketData.Length / e.PacketCount
    ' but if you need to know which particular properties
    ' are supported (beyond X and Y which are always placed first)
    ' you will need to query e.Cursor.Tablet.IsPacketPropertySupported()
    For Each G As Guid In mInkObject.DesiredPacketDescription
        If (e.Cursor.Tablet.IsPacketPropertySupported(G)) Then
            DescriptorsPerPacket += 1
        End If
    Next

    Dim LastX As Integer = e.PacketData(DescriptorsPerPacket * (e.PacketCount - 1))
    Dim LastY As Integer = e.PacketData((DescriptorsPerPacket * (e.PacketCount - 1)) + 1)
End Sub

private void mInkObject_NewInAirPackets2(object sender, InkCollectorNewInAirPacketsEventArgs e)
{
    int DescriptorsPerPacket = 0;
    // determine how many descriptors there are per packet
    // you could also obtain this value using:
    //   e.PacketData.Length / e.PacketCount
    // but if you need to know which particular properties
    // are supported (beyond X and Y which are always placed first)
    // you will need to query e.Cursor.Tablet.IsPacketPropertySupported()

    foreach (Guid G in mInkObject.DesiredPacketDescription)
    {
        if (e.Cursor.Tablet.IsPacketPropertySupported(G))
        {
            DescriptorsPerPacket++;
        }
    }

    int LastX = e.PacketData[DescriptorsPerPacket * (e.PacketCount - 1)];
    int LastY = e.PacketData[(DescriptorsPerPacket * (e.PacketCount - 1)) + 1];

}

Plateformes

Windows Vista

Le .NET Framework et le .NET Compact Framework ne prennent pas en charge toutes les versions de chaque plateforme. Pour obtenir la liste des versions prises en charge, consultez Configuration requise du .NET Framework.