StrokesEventHandler 委托

项目
10/28/2008

表示一个方法，该方法用于处理在 Ink 对象、InkOverlay 对象、InkPicture 控件和 Strokes 集合上添加和移除 Strokes 的事件。

命名空间： Microsoft.Ink
程序集： Microsoft.Ink（在 Microsoft.Ink.dll 中）

语法

声明
Public Delegate Sub StrokesEventHandler ( _
    sender As Object, _
    e As StrokesEventArgs _
)
用法
Dim instance As New StrokesEventHandler(AddressOf HandlerMethod)

public delegate void StrokesEventHandler(
    Object sender,
    StrokesEventArgs e
)

public delegate void StrokesEventHandler(
    Object^ sender, 
    StrokesEventArgs^ e
)

/** @delegate */
public delegate void StrokesEventHandler(
    Object sender,
    StrokesEventArgs e
)

JScript 不支持委托。

参数

sender
类型：System.Object
此事件的源 Ink 对象或 Strokes 集合。

e
类型：Microsoft.Ink.StrokesEventArgs
包含事件数据的 StrokesEventArgs 对象。

备注

创建 StrokesEventHandler 委托时，需要标识将处理该事件的方法。若要将该事件与事件处理程序关联，请将该委托的一个实例添加到事件中。除非移除了该委托，否则每当发生该事件时就会调用此事件处理程序。

StrokesEventHandler 委托用于实现 InkAdded、InkDeleted、StrokesAdded 和 StrokesRemoved 事件处理程序。

示例

在此示例中，InkAdded 事件处理程序将添加的笔画的相关信息写入一个列表框控件。

Private Sub Ink_InkAdded(ByVal sender As Object, ByVal e As StrokesEventArgs)
    ' since this event fires in all modes, we will check EditingMode
    ' and examine the StrokeIds only if we are currently in mode: InkOverlayEditingMode.Ink 
    If InkOverlayEditingMode.Ink = Me.mInkOverlay.EditingMode Then
        For Each id As Integer In e.StrokeIds
            Me.listBoxStrokeId.Items.Add("Added ID:" + id.ToString())
        Next
    End If
End Sub

private void Ink_InkAdded(object sender, StrokesEventArgs e)
{
    // since this event fires in all modes, we will check EditingMode
    // and examine the StrokeIds only if we are currently in mode: InkOverlayEditingMode.Ink 
    if (InkOverlayEditingMode.Ink == this.mInkOverlay.EditingMode)
    {
        foreach (int id in e.StrokeIds)
        {
            this.listBoxStrokeId.Items.Add("Added ID:" + id.ToString());

        }
    }
}

在此示例中，InkDeleted 事件处理程序将删除的笔画的相关信息写入一个列表框控件。

Private Sub Ink_InkDeleted(ByVal sender As Object, ByVal e As StrokesEventArgs)
    ' since this event fires in select mode also, we will check EditingMode
    ' and examine the StrokeIds only if we are currently in mode: InkOverlayEditingMode.Delete 
    If InkOverlayEditingMode.Delete = Me.mInkOverlay.EditingMode Then
        For Each id As Integer In e.StrokeIds
            Me.listBoxStrokeId.Items.Add("Deleted ID:" + id.ToString())
        Next
    End If
End Sub

private void Ink_InkDeleted(object sender, StrokesEventArgs e)
{
    // since this event fires in select mode also, we will check EditingMode
    // and examine the StrokeIds only if we are currently in mode: InkOverlayEditingMode.Delete 
    if (InkOverlayEditingMode.Delete == this.mInkOverlay.EditingMode)
    {
        foreach (int id in e.StrokeIds)
        {
            this.listBoxStrokeId.Items.Add("Deleted ID:" + id.ToString());

        }
    }
}