procedure DoAddDockClient(Client: TControl; const ARect: TRect); dynamic;
DYNAMIC void __fastcall DoAddDockClient(TControl* Client, const System::Types::TRect &ARect);
Performs actions when a control is docked to the windowed control.
Client is the control that has been docked.
ARect describes the boundaries of the region where Client has been docked.
Override DoAddDockClient to perform actions when a control is docked to the windowed control.