Stroke.GetPacketDescriptionPropertyMetrics - метод

Статья
11/04/2008

Обновлен: Ноябрь 2007

Returns the metrics for a given packet description type.

Пространство имен: Microsoft.Ink
Сборка: Microsoft.Ink (в Microsoft.Ink.dll)

Синтаксис

'Декларация
Public Function GetPacketDescriptionPropertyMetrics ( _
    id As Guid _
) As TabletPropertyMetrics
'Применение
Dim instance As Stroke
Dim id As Guid
Dim returnValue As TabletPropertyMetrics

returnValue = instance.GetPacketDescriptionPropertyMetrics(id)

public TabletPropertyMetrics GetPacketDescriptionPropertyMetrics(
    Guid id
)

public:
TabletPropertyMetrics GetPacketDescriptionPropertyMetrics(
    Guid id
)

public TabletPropertyMetrics GetPacketDescriptionPropertyMetrics(
    Guid id
)

public function GetPacketDescriptionPropertyMetrics(
    id : Guid
) : TabletPropertyMetrics

Параметры

id
Тип: System.Guid
The Guid from the PacketProperty object, which identifies the property for which to obtain metrics.

Возвращаемое значение

Тип: Microsoft.Ink.TabletPropertyMetrics
Returns the metrics for a given packet description type.

Примеры

In this example, each selected Stroke object of an InkOverlay object is modified so that each point of the second half of the stroke contains the maxium allowed NormalPressure packet value.

Using the GetPacketValuesByProperty method, the NormalPressure packet values for the second half of the Stroke object are obtained. The values are then set to the maximum allowed (as obtained via the GetPacketDescriptionPropertyMetrics method), and reapplied to the stroke using the SetPacketValuesByProperty method.

Try
    For Each S As Stroke In mInkOverlay.Selection
        ' get the PacketProperty.NormalPressure metrics for the stroke
        Dim metrics As TabletPropertyMetrics = S.GetPacketDescriptionPropertyMetrics(PacketProperty.NormalPressure)
        ' get the starting point
        Dim startPt As Integer = S.PacketCount / 2
        ' get the NormalPressure values starting at startPt
        Dim npValues() As Integer = S.GetPacketValuesByProperty(PacketProperty.NormalPressure, startPt)
        ' set the NormalPressure values to max
        For k As Integer = 0 To npValues.Length - 1
            npValues(k) = metrics.Maximum
        Next
        ' set the NormalPressure values starting at startPt
        S.SetPacketValuesByProperty(PacketProperty.NormalPressure, startPt, npValues)
    Next

Catch ex As ArgumentException
    ' This exception will be raised if PacketProperty.NormalPressure is not supported
    ' This will be the case if creating strokes with a mouse
End Try

try
{
    foreach (Stroke S in mInkOverlay.Selection)
    {
        // get the PacketProperty.NormalPressure metrics for the stroke
        TabletPropertyMetrics metrics = S.GetPacketDescriptionPropertyMetrics(PacketProperty.NormalPressure);
        // get the starting point
        int startPt = S.PacketCount / 2;
        // get the NormalPressure values starting at startPt
        int[] npValues = S.GetPacketValuesByProperty(PacketProperty.NormalPressure, startPt);
        // set the NormalPressure values to max
        for (int k = 0; k < npValues.Length; k++)
        {
            npValues[k] = metrics.Maximum;
        }
        // set the NormalPressure values starting at startPt
        S.SetPacketValuesByProperty(PacketProperty.NormalPressure, startPt, npValues);
    }
}
catch (ArgumentException)
{
    // This exception will be raised if PacketProperty.NormalPressure is not supported
    // This will be the case if creating strokes with a mouse
}

Платформы

Windows Vista

Среды .NET Framework и .NET Compact Framework поддерживают не все версии каждой платформы. Поддерживаемые версии перечислены в разделе Требования к системе для .NET Framework.