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InkCanvasSelectionHitResult Enumeration

.NET Framework 4

Identifies the various parts of a selection adorner on an InkCanvas.

Namespace: System.Windows.Controls
Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation

Syntax

C++

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public enum InkCanvasSelectionHitResult

XAML

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This class is not typically used in XAML.

Members

	Member name	Description
	None	No part of the selection adorner.
	TopLeft	The upper left handle of the selection adorner.
	Top	The upper middle handle of the selection adorner.
	TopRight	The upper right handle of the selection adorner.
	Right	The middle handle on the right edge of the selection adorner.
	BottomRight	The lower right handle of the selection adorner.
	Bottom	The lower middle handle of the selection adorner.
	BottomLeft	The lower left handle of the selection adorner.
	Left	The middle handle on the left edge of the selection adorner.
	Selection	The area within the bounds of the selection adorner.

Remarks

The HitTestSelection method returns an InkCanvasSelectionHitResult to indicate which part of the selection adorner intersects or surrounds a Point. This is useful when performing drag-and-drop operations.

Examples

The following example demonstrates how use HitTestSelection to determine whether to create a DataObject to initiate drag and drop. To implement drag and drop between two InkCanvas objects, see How to: Drag and Drop Ink.

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void InkCanvas_PreviewMouseDown(object sender, MouseEventArgs e)
{
    InkCanvas ic = (InkCanvas)sender;

    Point pt = e.GetPosition(ic);

    // If the user is moving selected strokes, prepare the strokes to be
    // moved to another InkCanvas.
    if (ic.HitTestSelection(pt) == 
        InkCanvasSelectionHitResult.Selection)
    {
        StrokeCollection selectedStrokes = ic.GetSelectedStrokes();
        StrokeCollection strokesToMove = selectedStrokes.Clone();

        // Remove the offset of the selected strokes so they
        // are positioned when the strokes are dropped.
        Rect inkBounds = strokesToMove.GetBounds();
        TranslateStrokes(strokesToMove, -inkBounds.X, -inkBounds.Y);

        // Perform drag and drop.
        MemoryStream ms = new MemoryStream();
        strokesToMove.Save(ms);
        DataObject dataObject = new DataObject(
            StrokeCollection.InkSerializedFormat, ms);

        DragDropEffects effects = 
            DragDrop.DoDragDrop(ic, dataObject, 
                                DragDropEffects.Move);

        if ((effects & DragDropEffects.Move) == 
             DragDropEffects.Move)
        {
            // Remove the selected strokes 
            // from the current InkCanvas.
            ic.Strokes.Remove(selectedStrokes);
        }
    }
}

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

System.Windows.Controls Namespace

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