DiagramControl.CustomHitTest Event

Occurs each time the cursor moves while hovering over a diagram item.

Namespace: DevExpress.XtraDiagram

Assembly: DevExpress.XtraDiagram.v23.2.dll

NuGet Package: DevExpress.Win.Diagram

Declaration

C#

[DiagramCategory(DiagramCategory.DiagramPaint)]
public event EventHandler<CustomHitTestEventArgs> CustomHitTest

VB.NET

<DiagramCategory(DiagramCategory.DiagramPaint)>
Public Event CustomHitTest As EventHandler(Of CustomHitTestEventArgs)

Event Data

The CustomHitTest event's data class is CustomHitTestEventArgs. The following properties provide information specific to this event:

Property	Description
Angle	Gets the angle by which the diagram item is rotated around its anchor point relative to the diagram canvas.
Bounds	Gets the bounds of the item to which the test points belongs.
Item	Gets the item to which the test point belongs.
ItemHeight	Gets the height of the item to which the test point belongs.
ItemWidth	Gets the width of the item to which the test point belongs.
Point	Gets the object that represents the position of the test point relative to the item it belongs to.
Result	Gets or sets whether the test point belongs to a diagram item.

Remarks

The CustomHitTest event allows you to implement a custom hit testing logic. It is mainly designed to be used with the DiagramControl.CustomDrawItem event.

Setting the event’s CustomHitTestEventArgs.Result property to false prevents the end-user from selecting the diagram item hovered by the pointer.