TDBLookupControl = class(TCustomControl)
class PASCALIMPLEMENTATION TDBLookupControl : public Vcl::Controls::TCustomControl
TDBLookupControl is the base class for controls that provide the user with a list of lookup items for filling in fields that require data from another dataset.
Use TDBLookupControl as a base class when defining controls that permit the user to set a field value by selecting a corresponding value from another dataset. The TDBLookupComboBox and TDBLookupListBox controls are both descended from the TDBLookupControl and provide the user with automatic lookup capabilities that are implemented in the TDBLookupControl object.