DiagramControl.BeforeItemsResizing Event

Raises each time the end-user attempts to resize 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<DiagramBeforeItemsResizingEventArgs> BeforeItemsResizing

VB.NET

<DiagramCategory(DiagramCategory.DiagramItems)>
Public Event BeforeItemsResizing As EventHandler(Of DiagramBeforeItemsResizingEventArgs)

Event Data

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 a value indicating whether the event should be canceled. Inherited from CancelEventArgs.
Items	Returns the collection of diagram items that are being resized.
Mode	Indicates the direction of resizing.

Remarks

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.

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the BeforeItemsResizing event.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

winforms-diagram-proportionally-resize-shapes-within-container/CS/WindowsFormsApp4/Form1.cs#L17

diagramControl1.BeforeItemsResizing += DiagramControl1_BeforeItemsResizing;
diagramControl1.ItemsResizing += DiagramControl1_ItemsResizing;

VB.NET

winforms-diagram-proportionally-resize-shapes-within-container/VB/WindowsFormsApp4/Form1.vb#L19

InitializeComponent()
AddHandler diagramControl1.BeforeItemsResizing, AddressOf DiagramControl1_BeforeItemsResizing
AddHandler diagramControl1.ItemsResizing, AddressOf DiagramControl1_ItemsResizing