InkPicture.CursorInRange Event
Occurs when a cursor enters the physical detection range (proximity) of the tablet context.
Namespace: Microsoft.Ink
Assembly: Microsoft.Ink (in Microsoft.Ink.dll)
Syntax
'Declaration
Public Event CursorInRange As InkCollectorCursorInRangeEventHandler
'Usage
Dim instance As InkPicture
Dim handler As InkCollectorCursorInRangeEventHandler
AddHandler instance.CursorInRange, handler
public event InkCollectorCursorInRangeEventHandler CursorInRange
public:
event InkCollectorCursorInRangeEventHandler^ CursorInRange {
void add (InkCollectorCursorInRangeEventHandler^ value);
void remove (InkCollectorCursorInRangeEventHandler^ value);
}
JScript does not support events.
Remarks
The event handler receives an argument of type InkCollectorCursorInRangeEventArgs that contains data about this event.
When you create a InkCollectorCursorInRangeEventHandler delegate, you identify the method that handles the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate. For performance reasons, the default event interest is off but is turned on automatically if you add an event handler.
The CursorInRange event fires even when in select or erase mode, not only when in ink mode. This requires that you monitor the editing mode (which you are responsible for setting) and be aware of the mode before interpreting the event. The advantage of this requirement is greater freedom to innovate on the platform through greater awareness of platform events.
Examples
In this example, when the CursorInRange event fires, a check is made to see if this is the first time that the InkPicture object has come in contact with this particular Cursor object. If so, the DrawingAttributes property is assigned with a clone of the DefaultDrawingAttributes property. This ensures that subsequent access to the DrawingAttributes property does not throw a null reference exception.
Private Sub mInkObject_CursorInRange(ByVal sender As Object, ByVal e As InkCollectorCursorInRangeEventArgs)
Const MOUSE_CURSOR_ID As Integer = 1
If e.NewCursor Then
' mInkObject can be InkCollector, InkOverlay, or InkPicture
e.Cursor.DrawingAttributes = mInkObject.DefaultDrawingAttributes.Clone()
' if this cursor is the mouse, we'll set color to red
If (MOUSE_CURSOR_ID = e.Cursor.Id) Then
e.Cursor.DrawingAttributes.Color = Color.Red
End If
End If
End Sub
private void mInkObject_CursorInRange(object sender, InkCollectorCursorInRangeEventArgs e)
{
const int MOUSE_CURSOR_ID = 1;
if (e.NewCursor)
{
// mInkObject can be InkCollector, InkOverlay, or InkPicture
e.Cursor.DrawingAttributes = mInkObject.DefaultDrawingAttributes.Clone();
// if this cursor is the mouse, we'll set color to red
if (MOUSE_CURSOR_ID == e.Cursor.Id)
{
e.Cursor.DrawingAttributes.Color = Color.Red;
}
}
}
Platforms
Windows 7, Windows Vista, Windows Server 2008 R2, Windows Server 2008
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Version Information
.NET Framework
Supported in: 3.0
See Also
Reference
InkCollectorCursorInRangeEventArgs