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Reference for unit 'Controls' (#lcl)

TWinControl.DoUnDock

Notifies an OnUnDock handler and DockManager of the undocked client control.

Declaration

Source position: controls.pp line 1794

protected function TWinControl.DoUnDock(

NewTarget: TWinControl;

Client: TControl;

KeepDockSiteSize: Boolean = true

):Boolean; virtual;

The OnUnDock handler can deny to undock the control.