Descendants of TWinControl can act as docking sites and descendants of TControl can act as child windows that are docked into docking sites. For example, to provide a docking site at the left edge of a form window, align a panel to the left edge of the form and make the panel a docking site. When dockable controls are dragged to the panel and released, they become child controls of the panel.

• Making a windowed control a docking site
• Making a control a dockable child
• Controlling how child controls are docked
• Controlling how child controls are undocked
• Controlling how child controls respond to drag-and-dock operations