Windows Dev Center

Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

InkCanvasSelectionHitResult Enumeration

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

Namespace: System.Windows.Controls
Assembly: PresentationFramework (in presentationframework.dll)
XML Namespace:  http://schemas.microsoft.com/winfx/2006/xaml/presentation

public enum InkCanvasSelectionHitResult
public enum InkCanvasSelectionHitResult
public enum InkCanvasSelectionHitResult
 This class is not typically used in XAML. 

 Member nameDescription
BottomThe lower middle handle of the selection adorner. 
BottomLeftThe lower left handle of the selection adorner. 
BottomRightThe lower right handle of the selection adorner. 
LeftThe middle handle on the left edge of the selection adorner. 
NoneNo part of the selection adorner. 
RightThe middle handle on the right edge of the selection adorner. 
SelectionThe area within the bounds of the selection adorner. 
TopThe upper middle handle of the selection adorner. 
TopLeftThe upper left handle of the selection adorner. 
TopRightThe upper right handle of the selection adorner. 

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.

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.

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);
        }
    }
}

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0

Community Additions

Show:
© 2015 Microsoft