Strokes.StrokesRemoved 事件

项目
11/04/2008

当从 Strokes 集合中删除一个或多个 Stroke 对象时发生。

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

语法

声明
Public Event StrokesRemoved As StrokesEventHandler
用法
Dim instance As Strokes
Dim handler As StrokesEventHandler

AddHandler instance.StrokesRemoved, handler

public event StrokesEventHandler StrokesRemoved

public:
 event StrokesEventHandler^ StrokesRemoved {
    void add (StrokesEventHandler^ value);
    void remove (StrokesEventHandler^ value);
}

/** @event */
public void add_StrokesRemoved (StrokesEventHandler value)
/** @event */
public void remove_StrokesRemoved (StrokesEventHandler value)

JScript 不支持事件。

备注

事件处理程序接收 StrokesEventArgs 类型的参数，该参数包含有关此事件的数据。

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。

示例

在此示例中，StrokesRemoved 事件处理程序将移除的 Stroke 对象保存在自定义 Strokes 集合中。

' Reminder: To avoid a memory leak, you must explicitly call the Dispose() method 
' on any Strokes collection to which an event handler has been attached before 
' the collection goes out of scope. 
Private Sub Strokes_StrokesRemoved(ByVal sender As Object, ByVal e As StrokesEventArgs)
    Try
        ' get the Ink object associated with the 
        ' Strokes collection that fired this event
        Dim mInk As Ink = DirectCast(sender, Strokes).Ink
        ' get the CustomStrokes collection named "REMOVED"
        Dim removed As Strokes = mInk.CustomStrokes("REMOVED")
        ' add the removed Strokes to the custom collection
        removed.Add(mInk.CreateStrokes(e.StrokeIds))

    Catch Ex As ArgumentException
        ' this exception is raised if the named collection ("REMOVED") does not exist
    End Try
End Sub

// Reminder: To avoid a memory leak, you must explicitly call the Dispose() method 
// on any Strokes collection to which an event handler has been attached before 
// the collection goes out of scope. 
private void Strokes_StrokesRemoved(object sender, StrokesEventArgs e)
{
    try
    {
        // get the Ink object associated with the 
        // Strokes collection that fired this event
        Ink mInk = ((Strokes)sender).Ink;
        // get the CustomStrokes collection named "REMOVED"
        Strokes removed = mInk.CustomStrokes["REMOVED"];
        // add the removed Strokes to the custom collection
        removed.Add(mInk.CreateStrokes(e.StrokeIds));
    }
    catch (ArgumentException)
    {
        // this exception is raised if the named collection ("REMOVED") does not exist
    }
}