Symbian
Symbian OS Library

SYMBIAN OS V9.3

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R:

RAM Disk

A simulated disk drive whose data is actually stored in RAM. Preserved over warm resets.

Rcomp

The filename of the resource compiler.

See also: Eikrs  resource compiler  

read-only

A file or directory attribute. Indicates that the file or directory cannot be modified or deleted, but a read-only directory may have its contents modified or deleted.

See also: attribute  

read-only data file

When used in the context of the world server, the term read-only file refers to the file used as the main source for the world database arrays. It is usually stored in ROM, but may be overwritten by a file in RAM, C:\System\Localization\Wld_Data.dbz.

real name

The name used to store a file on disk. For some file systems, this may not be the same as the name used by most file system calls.

receiver

For Bluetooth, the device that receives a communications request from an initiator.

recognizer

Plug-in code that can examine sample data, and return, if recognized, its data type. A data type is also commonly known as a MIME type.

See also: MIME 

rectangle

A rectangle specified in terms of its top-left corner and the co-ordinate below and to the right of its bottom-right corner.

See also: point  size  region  

redraw

Part or all of a window must be redrawn if either the window server causes it to be invalidated, or the application model changes, requiring an update.

See also: window  invalid  

redraw event

An event from the window server indicating that part of a window must be redrawn.

See also: redraw  window server  

reference city

Searches for the city nearest to a specified map co-ordinate are always started from a reference city.

reference counting object

An object which can track concurrent references to itself, and which arranges automatic destruction of itself when the final reference is removed.

region

A region used, for example, in clipping or maintaining the invalid region of a window. Implemented as a list of rectangles.

See also: rectangle  window  

registered alarm

A CAgnAlarm object that handles the interface between the agenda model and the alarm server.

registry

A Message Server abstraction that provides facilities to locate and load particular MTM components.

remote file system

A file system that mediates access to files that are remote from the machine (perhaps linked by a network), and which may not use native machine formats. The remote file system is responsible for translating the non-native format into the correct form required for all File Server Client Side API calls. Must be an installable file system.

See also: file system  

releasable

A separately built item (executable, library, device driver etc.) which forms part of a component.

repeat details

The definition of the dates on which a repeating entry occurs, made up of a repeat algorithm and exceptions.

See also: repeating entry  

repeating entry

An agenda entry which has its repeat details set.

See also: repeat details  

repro, reproing

The act of erasing what was on the flash memory, and re-programming it with a new ROM image. Also the name of the tool used to do this.

request function

A function provided by an asynchronous service provider to initiate an asynchronous service.

Requests are indicated by function calls with a TRequestStatus reference parameter.

See also: asynchronous service provider  cancel function  

request semaphore

A semaphore created when a thread is created and is used to indicate the completion of an asynchronous request; the request status is used to distinguish between different requests.

See also: asynchronous request  request status  semaphore  

request status

An object that indicates the completion status of a request.

See also: Asynchronous request  

requisite

A file that must be present for an application to run, e.g. a DLL.

reschedule

The operation of changing the currently executing thread. This involves saving the register contents of the currently executing thread and restoring those of the newly executing thread. If the new thread is in a different process, there is a context switch too.

residual stub file

Remains of installation file (sis file) stored in system directory to prevent over-writing and assist in application removal.

See also: sis file  Makesis  

resolver

For communications, turns a symbolic address into an actual address. The best known resolver is the Domain Name Service (DNS) for TCP/IP.

resource

Data defined in a resource file, externally to a program. The resource file contains language-dependent string text and specifications of user interface elements.

See also: resource file  resource compiler  Rcomp  

resource compiler

A tool for creating a resource file from text input.

See also: resource  Rcomp  

resource file

The file containing the resources for a particular program.

resource header file

A file containing a definition of all the resources used by a particular control. It can be #included in a resource file and has the extension .rh.

See also: Rcomp  Eikrs  resource file  resource  

review alarm

Alarms that are set to activate at some time in the past, e.g. as a result of a change to daylight saving time.

See also: Timed alarm  untimed alarm  orphan alarm  clock alarm  snoozed alarm  

RFCOMM

An interface that allows an application to treat a Bluetooth link in a similar way as if it were communicating over a serial port.

rich text

Editable text with character and paragraph format attributes that may be different for each character and paragraph of the text object.

See also: editable text  text object  format attribute  picture  

rich text object

A text object containing rich text.

See also: rich text  text object  

right adjust

The number of pixels to move after displaying a character.

See also: left adjust  

RLP

Radio Link Protocol. A protocol used over the air interface.

RNG

Ring Indicate. An RS232 input line that is generally held high by a modem while the telephone is ringing.

See also: RS232  

rollback

Undoing a change in such a way that the net effect is that no change in the state of an application or its data can be perceived.

In the context of DBMS, this means to abandon a transaction and restore the previous state of the database.

In the context of exception handling, this is normally a requirement of cleanup after an exception has occurred.

See also: transaction  commit  leave  cleanup  

ROM file system

The ROM contains files which may be read and executed in place, but not written.

See also: file system  

root certificate

A self-signed certificate: the root of a certification hierarchy.

root folder

A folder name selector will display all folders beneath this folder.

See also: folder name selector  

root stream

A stream in a persistent store from which all other streams within that store can be found.

See also: stream id  UID  

root stream dictionary

The stream dictionary stored in the root stream of a document: each entry in the dictionary is a main stream of the document's data.

See also: document head stream  stream dictionary  root stream  

row

Data from a database; described by a column set.

See also: database  rowset  column set  

rowset

A set of rows returned by a database, as a result of an SQL query or opening a table.

See also: row  database  SQL  table  cursor  

RS232

This is the standard for serial data transmission using cables, normally carrying between ±5V and ±12V on both data and control signal lines.

rss file

Resource source file, for input to the resource compiler or the application information file compiler.

rtf

Rich text file.

rtf source file

Contains text, conveyed in styled markup, for a help file. This includes the category (application) name, help file UID and the topic titles, context terms, synonyms, index terms, and body text.

See also: CS help compiler 

RTS

Request To Send. An RS232 output line that can be held high to indicate we are able to receive data.

See also: RS232