wpf-devexpress-dot-xpf-dot-diagram-dot-diagramcontrol-60e253b1.md
Raises each time the end-user attempts to resize a diagram item.
Namespace : DevExpress.Xpf.Diagram
Assembly : DevExpress.Xpf.Diagram.v25.2.dll
NuGet Package : DevExpress.Wpf.Diagram
public event EventHandler<DiagramBeforeItemsResizingEventArgs> BeforeItemsResizing
Public Event BeforeItemsResizing As EventHandler(Of DiagramBeforeItemsResizingEventArgs)
The BeforeItemsResizing event's data class is DiagramBeforeItemsResizingEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| ActionSource | Indicates whether the resizing operation is performed using the selection handles or the Properties Panel. |
| 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. |
| Items | Returns the collection of items that are being resized. |
| Mode | Indicates the direction of resizing. |
| 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. |
The ActionSource event’s parameter indicates whether the resizing operation is performed using drag-and-drop or pressing key shortcuts. The Mode property indicates the direction of resizing.
See Also