共用方式為


IStylusAsyncPlugin.StylusDown 方法

通知實作外掛程式,手寫筆已接觸數位板介面。

命名空間:  Microsoft.StylusInput
組件:  Microsoft.Ink (在 Microsoft.Ink.dll 中)

語法

'宣告
Sub StylusDown ( _
    sender As RealTimeStylus, _
    data As StylusDownData _
)
'用途
Dim instance As IStylusAsyncPlugin
Dim sender As RealTimeStylus
Dim data As StylusDownData

instance.StylusDown(sender, data)
void StylusDown(
    RealTimeStylus sender,
    StylusDownData data
)
void StylusDown(
    RealTimeStylus^ sender, 
    StylusDownData^ data
)
void StylusDown(
    RealTimeStylus sender,
    StylusDownData data
)
function StylusDown(
    sender : RealTimeStylus, 
    data : StylusDownData
)

參數

備註

您可以透過呼叫 data 參數中所包含 StylusDownData 物件的繼承 SetData 方法來修改封包資料。

ms585061.alert_note(zh-tw,VS.90).gif注意事項:

如果 value 參數中的陣列長度不等於所繼承的 PacketPropertyCount 屬性的值,SetData 方法會擲回 ArgumentException (英文) 例外狀況。

範例

這個 C# 範例改編自 RealTimeStylus Plug-in Sample,會示範 StylusDown 方法的實作。這個範例會在手寫筆接觸數位板的點周圍繪製紫色圓形。myGraphics 變數會針對 RealTimeStylus 的附加目標控制項存放 Graphics (英文) 物件的內部參考。

public void StylusDown(RealTimeStylus sender, StylusDownData data) 
{
    for (int i = 0; i < data.Count; i += data.PacketPropertyCount)
    {
        // Packet data always has x followed by y followed by the rest
        Point point = new Point(data[i], data[i+1]);

        // Since the packet data is in Ink Space coordinates, we need to convert to Pixels...
        point.X = (int)Math.Round((float)point.X * (float)myGraphics.DpiX/2540.0F);
        point.Y = (int)Math.Round((float)point.Y * (float)myGraphics.DpiY/2540.0F);

        // Draw a circle corresponding to the packet
        myGraphics.DrawEllipse(Pens.Purple, point.X - 2, point.Y - 2, 4, 4);
    }
}

這個 Microsoft Visual Basic .NET 範例改編自 RealTimeStylus Plug-in Sample,會示範 StylusDown 方法的實作。這個範例會在手寫筆接觸數位板的點周圍繪製紫色圓形。myGraphics 變數會針對 RealTimeStylus 的附加目標控制項存放 Graphics (英文) 物件的內部參考。

Public Sub StylusDown(ByVal sender As RealTimeStylus, ByVal data As StylusDownData) _
 Implements IStylusAsyncPlugin.StylusDown
    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 point As New Point(data(i), data((i + 1)))

        ' Since the packet data is in Ink Space coordinates, we need to convert to Pixels...
        point.X = Math.Round((System.Convert.ToSingle(point.X) * System.Convert.ToSingle(myGraphics.DpiX) / 2540.0F))
        point.Y = Math.Round((System.Convert.ToSingle(point.Y) * System.Convert.ToSingle(myGraphics.DpiY) / 2540.0F))

        ' Draw a circle corresponding to the packet
        myGraphics.DrawEllipse(Pens.Purple, point.X - 2, point.Y - 2, 4, 4)
    Next i
End Sub 'StylusDown

平台

Windows Vista, Windows XP SP2, Windows Server 2003

.NET Framework 和 .NET Compact Framework 並不支援各種平台的所有版本。如需支援平台版本的相關資訊,請參閱 .NET Framework 系統需求

版本資訊

.NET Framework

支援版本:3.0

請參閱

參考

IStylusAsyncPlugin 介面

IStylusAsyncPlugin 成員

Microsoft.StylusInput 命名空間

StylusDownData