IStylusAsyncPlugin.StylusUp Method

Article
10/19/2012

Notifies the implementing plug-in that the user has raised the stylus off of the tablet digitizer surface.

Namespace: Microsoft.StylusInput
Assembly: Microsoft.Ink (in Microsoft.Ink.dll)

Syntax

'Declaration
Sub StylusUp ( _
    sender As RealTimeStylus, _
    data As StylusUpData _
)
'Usage
Dim instance As IStylusAsyncPlugin 
Dim sender As RealTimeStylus 
Dim data As StylusUpData

instance.StylusUp(sender, data)

void StylusUp(
    RealTimeStylus sender,
    StylusUpData data
)

void StylusUp(
    RealTimeStylus^ sender, 
    StylusUpData^ data
)

function StylusUp(
    sender : RealTimeStylus, 
    data : StylusUpData
)

Parameters

sender
Type: Microsoft.StylusInput.RealTimeStylus

The RealTimeStylus object that sent the notification.

data
Type: Microsoft.StylusInput.PluginData.StylusUpData

Information about the Stylus object associated with the notification.

Remarks

You can modify the packet data by calling the inherited SetData method of the StylusUpData object contained in the data parameter.

Note

An ArgumentException exception is thrown by the SetData method if the length of the array in the value parameter is not equal to the value of the inherited PacketPropertyCount property.

Examples

This C# example is excerpted from the RealTimeStylus Plug-in Sample. The example shows how to restrict pen input to a specified rectangle.

public void StylusUp(RealTimeStylus sender,  StylusUpData data)
{
    ModifyPacketData(data);
}

private void ModifyPacketData(StylusDataBase data)
{
    // For each packet in the packet data, check whether
    // its x,y values fall outside of the specified rectangle.  
    // If so, replace them with the nearest point that still
    // falls within the rectangle.
    for (int i = 0; i < data.Count ; i += data.PacketPropertyCount)
    {
        // packet data always has x followed by y followed by the rest
        int x = data[i];
        int y = data[i+1];

        // Constrain points to the input rectangle
        x = Math.Max(x, rectangle.Left);
        x = Math.Min(x, rectangle.Right);
        y = Math.Max(y, rectangle.Top);
        y = Math.Min(y, rectangle.Bottom);

        // If necessary, modify the x,y packet data
        if (x != data[i])
        {
            data[i] = x;
        }
        
        if (y != data[i+1])
        {
            data[i+1] = y;
        } 
    }
}

This Microsoft Visual Basic .NET example is excerpted from the RealTimeStylus Plug-in Sample. The example shows how to restrict pen input to a specified rectangle.

Public Sub StylusUp(ByVal sender As RealTimeStylus, ByVal data As StylusUpData) _
 Implements IStylusAsyncPlugin.StylusUp
    ModifyPacketData(data)
End Sub 'StylusUp

Private Sub ModifyPacketData(ByVal data As StylusDataBase)
    ' For each packet in the packet data, check whether
    ' its x,y values fall outside of the specified rectangle.  
    ' If so, replace them with the nearest point that still
    ' falls within the rectangle.
    Dim i As Integer
    For i = 0 To data.Count - data.PacketPropertyCount Step data.PacketPropertyCount
        ' packet data always has x followed by y followed by the rest
        Dim x As Integer = data(i)
        Dim y As Integer = data((i + 1))

        ' Constrain points to the input rectangle
        x = Math.Max(x, rectangle.Left)
        x = Math.Min(x, rectangle.Right)
        y = Math.Max(y, rectangle.Top)
        y = Math.Min(y, rectangle.Bottom)

        ' If necessary, modify the x,y packet data
        If x <> data(i) Then
            data(i) = x
        End If
        If y <> data((i + 1)) Then
            data((i + 1)) = y
        End If
    Next i
End Sub 'ModifyPacketData

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Framework

Supported in: 3.0

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