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   [Expand]ActivePanelChangedEventArgs Class
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 End-User Documentation

DockManager.StartDocking Event

Fires when a docking operation starts.

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

Expanded Syntax

Expanded Event Data

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

The following DockPanelCancelEventArgs properties provide information specific to this event.
Property Description
Cancel Gets or sets whether the operation performed on the processed panel should be cancelled.
Panel Gets the processed dock panel.

Expanded Remarks

End-users can perform docking operations by pressing the dock panel's caption with the mouse and dragging it. Once the dragging operation starts, the StartDocking event fires. Handle this event to prevent end-users from performing docking operations on panel(s).

The event parameter's DockPanelCancelEventArgs.Cancel property specifies whether the docking operation is allowed. The processed dock panel is identified by the DockPanelEventArgs.Panel property.

For more information and examples on how docking operations can be performed in code, see the Controlling Dock Operations document.

Expanded See Also

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