Fires each time the end-user attempts to move a diagram item.
NuGet Package: DevExpress.Wpf.Diagram
public event EventHandler<DiagramBeforeItemsMovingEventArgs> BeforeItemsMoving
Public Event BeforeItemsMoving As EventHandler(Of DiagramBeforeItemsMovingEventArgs)
The BeforeItemsMoving event's data class is DiagramBeforeItemsMovingEventArgs. The following properties provide information specific to this event:
|ActionSource||Indicates whether the moving operation is performed using drag-and-drop, the Properties Panel or by pressing key shortcuts.|
|Cancel||Gets or sets whether the event should be canceled. Inherited from CancelRoutedEventArgs.|
|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.|
|IsCopying||Indicates whether the user attempts to copy diagram items by holding Ctrl.|
|Items||Returns the items the user is attempting to move.|
|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:
|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.|
The event’s Items property returns the items that are about to be moved. The ActionSource property indicates whether the moving operation is performed using drag-and-drop or pressing key shortcuts. The IsCopying property returns true when the end-user attempts to move items while holding the CTRL key which results in items being copied.
Related GitHub Examples
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the BeforeItemsMoving event.
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