procedure GetChildren(Proc: TGetChildProc; Root: TComponent); override;
DYNAMIC void __fastcall GetChildren(System::Classes::TGetChildProc Proc, System::Classes::TComponent* Root);
Prevents the streaming system from loading and saving child controls in the usual fashion.
GetChildren is called in the streaming sequence that loads and saves VCL components. Because radio groups load and save their buttons using the ReadState and WriteState methods, TCustomRadioGroup overrides TWinControl to disable the GetChildren method.