constructor Create(const ADesigner: IDesigner; APropCount: Integer); override;
Creates a new TPropertyEditor object.
Do not create instances of a property editor. Registered property editors are created automatically for selected objects in the form designer.
ADesigner is an interface that the property editor can use to interact with the forms designer. It becomes the value of the Designer property.
APropCount indicates the number of components whose properties are to be edited using the property editor. It becomes the value of the PropCount property.