InkCollectorNewInAirPacketsEventArgs.PacketCount (Propiedad)

Artículo
10/28/2008

Actualización: noviembre 2007

Obtiene el número de entradas en el aire recibidas.

Espacio de nombres: Microsoft.Ink
Ensamblado: Microsoft.Ink (en Microsoft.Ink.dll)

Sintaxis

'Declaración
Public ReadOnly Property PacketCount As Integer
'Uso
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

Valor de propiedad

Tipo: System.Int32
Número de entradas en el aire recibidas.

Comentarios

Las entradas en el aire se reciben cuando un objeto Cursor entra en el intervalo de detección física (proximidad) del contexto de Tablet PC.

Ejemplos

En este ejemplo, una instancia de InkCollectorNewInAirPacketsEventHandler obtiene los valores X e Y del último paquete pasados a través del objeto InkCollectorNewInAirPacketsEventArgs. Los valores X e Y siempre están en las dos primeras posiciones de los datos del paquete.

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];

}

Plataformas

Windows Vista

.NET Framework y .NET Compact Framework no admiten todas las versiones de cada plataforma. Para obtener una lista de las versiones compatibles, vea Requisitos de sistema de .NET Framework.