InkOverlayStrokesDeletedEventHandler 委托
表示处理 InkOverlay 对象的 StrokesDeleted 事件的方法。
命名空间： Microsoft.Ink
程序集： Microsoft.Ink（在 Microsoft.Ink.dll 中）
语法
声明
Public Delegate Sub InkOverlayStrokesDeletedEventHandler ( _
sender As Object, _
e As EventArgs _
)
用法
Dim instance As New InkOverlayStrokesDeletedEventHandler(AddressOf HandlerMethod)
public delegate void InkOverlayStrokesDeletedEventHandler(
Object sender,
EventArgs e
)
public delegate void InkOverlayStrokesDeletedEventHandler(
Object^ sender,
EventArgs^ e
)
/** @delegate */
public delegate void InkOverlayStrokesDeletedEventHandler(
Object sender,
EventArgs e
)
JScript 不支持委托。
参数
- sender
类型：System.Object
此事件的源 InkOverlay。
- e
类型：System.EventArgs
包含事件数据的 EventArgs 对象。
备注
从 Ink 属性删除 Stroke 对象之后将发生 StrokesDeleted 事件。
EventArgs 类不包含事件数据。该类由引发事件时不向事件处理程序传递状态信息的事件使用。
示例
此示例演示如何订阅 Stoke() 和 StrokesDeleted 事件来修改墨迹呈现的控件的背景色。
当激发 Stoke() 事件时，将检查 EditingMode 属性。如果当前处于墨迹 模式，则控件的背景色更改为白色。必须检查 EditingMode 属性，因为擦除笔画时也会激发 Stoke() 事件。
Private Sub mInkObject_Stroke3(ByVal sender As Object, ByVal e As InkCollectorStrokeEventArgs)
' If you are in inking mode, change background to white.
' (This event will also fire in Delete mode because the movement made by
' the eraser is considered a stroke.)
If (InkOverlayEditingMode.Ink = mInkObject.EditingMode) Then
mInkObject.AttachedControl.BackColor = Color.White
End If
End Sub
private void mInkObject_Stroke3(object sender, InkCollectorStrokeEventArgs e)
{
// If you are in inking mode, change background to white.
// (This event will also fire in Delete mode because the movement made by
// the eraser is considered a stroke.)
if (InkOverlayEditingMode.Ink == mInkObject.EditingMode)
{
mInkObject.AttachedControl.BackColor = Color.White;
}
}
当激发 StrokesDeleted 事件时，将检查 Stokes() 集合。如果该集合中不存在 Stroke 对象（或只剩下橡皮擦的笔画），则控件的背景色更改为灰色。
Private Sub mInkObject_StrokesDeleted(ByVal sender As Object, ByVal e As EventArgs)
' Change the background to gray if there are no strokes.
' If the last stroke was deleted by an eraser, there will be one transparent
' stroke, which is the stroke made by the eraser itself.
If (mInkObject.Ink.Strokes.Count = 0 Or _
(mInkObject.Ink.Strokes.Count = 1 And _
mInkObject.Ink.Strokes(0).DrawingAttributes.Transparency = 255)) Then
mInkObject.AttachedControl.BackColor = Color.Gray
End If
End Sub
private void mInkObject_StrokesDeleted(object sender, EventArgs e)
{
// Change the background to gray if there are no strokes.
// If the last stroke was deleted by an eraser, there will be one transparent
// stroke, which is the stroke made by the eraser itself.
if (mInkObject.Ink.Strokes.Count == 0 ||
(mInkObject.Ink.Strokes.Count == 1 &&
mInkObject.Ink.Strokes[0].DrawingAttributes.Transparency == 255))
{
mInkObject.AttachedControl.BackColor = Color.Gray;
}
}
平台
Windows Vista
.NET Framework 和 .NET Compact Framework 并不是对每个平台的所有版本都提供支持。有关支持的版本的列表，请参见.NET Framework 系统要求。
版本信息
.NET Framework
受以下版本支持：3.0