InkOverlaySelectionResizedEventArgs.OldSelectionBoundingRect 属性

项目
11/04/2008

获取所选 Strokes 集合在 SelectionResized 事件激发之前的原始边框。

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

语法

声明
Public ReadOnly Property OldSelectionBoundingRect As Rectangle
用法
Dim instance As InkOverlaySelectionResizedEventArgs
Dim value As Rectangle

value = instance.OldSelectionBoundingRect

public Rectangle OldSelectionBoundingRect { get; }

public:
property Rectangle OldSelectionBoundingRect {
    Rectangle get ();
}

/** @property */
public Rectangle get_OldSelectionBoundingRect()

public function get OldSelectionBoundingRect () : Rectangle

属性值

类型：System.Drawing.Rectangle
所选 Strokes 集合在 SelectionResized 事件激发之前的原始大小。

备注

OldSelectionBoundingRect 属性提供有关 InkOverlaySelectionResizedEventArgs 事件的特定信息。

备注

此矩形用墨迹空间坐标指定，允许实现撤消方案。

示例

在此示例中，SelectionResized 事件处理程序在所选内容调整大小之后检查该内容。如果所选 Strokes 集合的大小在调整之后每个维度均小于 500 个 HIMETRIC 单位，则将所选内容还原为其原始大小。

Private Sub mInkObject_SelectionResized(ByVal sender As Object, ByVal e As InkOverlaySelectionResizedEventArgs)
    Dim newBounds As Rectangle = mInkObject.Selection.GetBoundingBox()
    ' Check if we are too small
    If (newBounds.Height < 500 Or newBounds.Width < 500) Then
        ' Resize to back to original rectangle
        mInkObject.Selection.ScaleToRectangle(e.OldSelectionBoundingRect)

        ' Trick to insure that selection handles are updated
        mInkObject.Selection = mInkObject.Selection
    End If
End Sub

private void mInkObject_SelectionResized(object sender, InkOverlaySelectionResizedEventArgs e)
{
    Rectangle newBounds = mInkObject.Selection.GetBoundingBox();
    // Check if we are too small
    if (newBounds.Height < 500 || newBounds.Width < 500)
    {
        // Resize to back to original rectangle
        mInkObject.Selection.ScaleToRectangle(e.OldSelectionBoundingRect);

        // Trick to insure that selection handles are updated
        mInkObject.Selection = mInkObject.Selection;
    }
}