DiagramControl.CustomItemQueryContinueDrag Event

Occurs during a drag-and-drop operation.

Namespace: DevExpress.Xpf.Diagram

Assembly: DevExpress.Xpf.Diagram.v20.2.dll

NuGet Packages: DevExpress.WindowsDesktop.Wpf.Diagram, DevExpress.Wpf.Diagram

Declaration

C#

public event EventHandler<DiagramCustomItemQueryContinueDragEventArgs> CustomItemQueryContinueDrag

VB.NET

Public Event CustomItemQueryContinueDrag As EventHandler(Of DiagramCustomItemQueryContinueDragEventArgs)

Event Data

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

Property	Description
Action	Gets or sets the status of the current drag-and-drop operation.
Handled	Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route. Inherited from RoutedEventArgs.
IsCancellationRequested	Indicates whether the drag operation cancellation is requested.
Items	Returns the list of the diagram items the user is dragging.
KeyStates	Gets the current state of the Shift, Ctrl, and Alt keys.
OriginalSource	Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class. Inherited from RoutedEventArgs.
RoutedEvent	Gets or sets the RoutedEvent associated with this RoutedEventArgs instance. Inherited from RoutedEventArgs.
Source	Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs.

The event data class exposes the following methods:

Method	Description
InvokeEventHandler(Delegate, Object)	When overridden in a derived class, provides a way to invoke event handlers in a type-specific way, which can increase efficiency over the base implementation. Inherited from RoutedEventArgs.
OnSetSource(Object)	When overridden in a derived class, provides a notification callback entry point whenever the value of the Source property of an instance changes. Inherited from RoutedEventArgs.

Remarks

Set the event’s Action parameter to one of the System.Windows.DragAction enumeration values to specify how and if the drag-and-drop operation should continue.