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InkCollectorMouseDownEventHandler Delegate

Represents the method that handles the MouseDown event of an InkCollector object.

Namespace:  Microsoft.Ink
Assembly:  Microsoft.Ink (in Microsoft.Ink.dll)

JScript does not support delegates.


Type: System.Object

The source InkCollector object of this event.

Type: Microsoft.Ink.CancelMouseEventArgs

The CancelMouseEventArgs object that contains the event data.

When you create an InkCollectorMouseDownEventHandler 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 in managed code if you add an event handler.

To improve real-time ink performance, hide the mouse cursor while inking. To do so, hide the mouse cursor in the MouseDown event handler, and show the mouse cursor in the MouseUp event handler.


Some controls rely on a specific relationship between MouseDown, MouseMove, and MouseUp events. Cancelling these events may have unanticipated results.

In this example, when the MouseDown event fires, a check is made to see if EditingMode is set to Select. If so, the HitTestSelection method is called to determine which part of the selection (if any) has been hit. If the hit occurs on any of the four main compass directions, as specified by the SelectionHitResult enumeration, the stroke objects that are selected are changed to a different color.

No code example is currently available or this language may not be supported.

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.

.NET Framework

Supported in: 3.0