[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'RttiUtils' (#fcl)


[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

Property storage mechanism


Source position: rttiutils.pp line 68

type TPropsStorage = class(TObject)


  procedure StoreAnyProperty();


Store a property value

  procedure LoadAnyProperty();


Load a property value

  procedure StoreProperties();


Store a list of properties

  procedure LoadProperties();


Load a list of properties

  procedure LoadObjectsProps();


Load a list of component properties

  procedure StoreObjectsProps();


Store a list of component properties

  property Options: TPropStorageOptions; [rw]


Options to take into account when saving or loading properties from the storage

  property AObject: TObject; [rw]


Object to load or store properties from

  property Prefix: string; [rw]


Prefix to use in storage

  property Section: string; [rw]


Section name for storage

  property OnReadString: TReadStrEvent; [rw]


Read a string value from storage

  property OnWriteString: TWriteStrEvent; [rw]


Write a string value to storage

  property OnEraseSection: TEraseSectEvent; [rw]


Erase a section in storage





Property storage mechanism




TPropsStorage provides a mechanism to store properties from any class which has published properties (usually a TPersistent descendent) in a storage mechanism.

TPropsStorage does not handle the storage by itself, instead, the storage is handled through a series of callbacks to read and/or write strings. Conversion of property types to string is handled by TPropsStorage itself: all that needs to be done is set the 3 handlers. The storage mechanism is assumed to have the structure of an .ini file : sections with key/value pairs. The three callbacks should take this into account, but they do not need to create an actual .ini file.

See also



Class for keeping property information

Documentation generated on: Jun 22 2020