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 End-User Documentation

DockLayoutManager.LayoutItemSelectionChanging Event

Fires when the layout item's selection state is about to be changed.

Namespace:DevExpress.Xpf.Docking
Assembly:DevExpress.Xpf.Docking.v17.1.dll

Expanded Syntax

Expanded Event Data

The event handler receives an argument of type LayoutItemSelectionChangingEventArgs containing data related to this event.

The following LayoutItemSelectionChangingEventArgs properties provide information specific to this event.
Property Description
Cancel Gets or sets whether the current operation must be canceled.
Handled Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route.
Item Gets the currently processed item.
OriginalSource Gets the original reporting source as determined by pure hit testing, before any possible System.Windows.RoutedEventArgs.Source adjustment by a parent class.
RoutedEvent Gets or sets the System.Windows.RoutedEventArgs.RoutedEvent associated with this System.Windows.RoutedEventArgs instance.
Selected Gets whether the item is selected.
Source Gets or sets a reference to the object that raised the event.

Expanded Remarks

An end-user can select a layout item in Customization Mode by clicking the item; and deselect the item by clicking it while holding the CTRL key down. If an item is selected or allows selection, it's possible to invoke its customization context menu by right-clicking the item. In addition, the items that allow selection can be moved via drag-and-drop.

To prevent an item's selection state from being changed, you can do one of the following:

The LayoutItemSelectionChanging is just a notification event that fires after an item has been successfully selected/deselected.

Expanded See Also

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