Strokes.StrokesAdded 事件

發行項
10/29/2008

當一個或多個 Stroke 物件加入至 Strokes 集合時發生。

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

語法

'宣告
Public Event StrokesAdded As StrokesEventHandler
'用途
Dim instance As Strokes
Dim handler As StrokesEventHandler

AddHandler instance.StrokesAdded, handler

public event StrokesEventHandler StrokesAdded

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

/** @event */
public void add_StrokesAdded (StrokesEventHandler value)
/** @event */
public void remove_StrokesAdded (StrokesEventHandler value)

JScript 不支援事件。

備註

事件處理常式會收到 StrokesEventArgs 型別的引數，其中包含這個事件的相關資料。

在建立 StrokesEventHandler 委派時，您會識別處理事件的方法。若要使事件與您的事件處理常式產生關聯，請將委派的執行個體加入至事件。除非您移除委派，否則每當事件發生時就會呼叫事件處理常式。

範例

在這個範例中，StrokesAdded 事件處理常式會將剛加入的筆劃順時針旋轉 90 度。旋轉時，會繞著剛加入之 Stroke 物件週框方塊的中心進行旋轉。

' 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_StrokesAdded(ByVal sender As Object, ByVal e As StrokesEventArgs)
    ' check each stroke id passed to the handler
    For Each id As Integer In e.StrokeIds
        ' find the Stroke
        For Each oneStroke As Stroke In DirectCast(sender, Strokes)
            ' when we find the added stroke, rotate it 
            If (oneStroke.Id = id) Then
                Dim bounds As Rectangle = oneStroke.GetBoundingBox()
                ' create a point at the center of bounding box
                Dim center As Point = New Point(bounds.Left + (bounds.Width / 2), bounds.Top + (bounds.Height / 2))
                ' rotate the stroke
                oneStroke.Rotate(90, center)
            End If
        Next
    Next
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_StrokesAdded(object sender, StrokesEventArgs e)
{
    // check each stroke id passed to the handler
    foreach (int id in e.StrokeIds)
    {
        // find the Stroke
        foreach (Stroke oneStroke in (Strokes)sender)
        {
            // when we find the added stroke, rotate it 
            if (oneStroke.Id == id)
            {
                Rectangle bounds = oneStroke.GetBoundingBox();
                // create a point at the center of bounding box
                Point center = new Point(bounds.Left + (bounds.Width / 2), bounds.Top + (bounds.Height / 2));
                // rotate the stroke
                oneStroke.Rotate(90, center);
            }
        }
    }

}