DiagramControl.QueryItemsAction Event

Fires each time the end-user attempts to perform an action on a diagram item.

Namespace: DevExpress.XtraDiagram

Assembly: DevExpress.XtraDiagram.v23.2.dll

NuGet Package: DevExpress.Win.Diagram

Declaration

C#

[DiagramCategory(DiagramCategory.DiagramItems)]
public event EventHandler<DiagramQueryItemsActionEventArgs> QueryItemsAction

VB.NET

<DiagramCategory(DiagramCategory.DiagramItems)>
Public Event QueryItemsAction As EventHandler(Of DiagramQueryItemsActionEventArgs)

Event Data

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

Property	Description
Action	Indicates the kind of the action that raised the event.
Allow	Specifies whether to allow the operation.
HighlightedItem	Returns the currently highlighted diagram item.
HighlightedItemPoint	Returns the current coordinates of the cursor.
Items	Returns the collection of diagram items affected by the action.

Remarks

The event’s Items property returns the collection of diagram items on which an action is about to be performed. The action kind is returned by the Action property. You can prohibit the action from being performed by setting the Allow property to false.