Symbian Developer Library


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L function

In the context of EPOC C++ programming, a function with a trailing L in its name, e.g. NewL(): such functions may leave, either directly by calling User::Leave(), or indirectly by calling other functions that may leave.

See also: leave


A descriptor which contains the name of a contact item field, for instance First name or Home address.

See also: descriptor, field

label margin

Margin used for labels, normally used for paragraph style.

See also: view rectangle, line cursor margin


A Look and Feel software module provided by device manufacturers to customise devices and user interfaces. For example, the scroll bar appearance.


Horizontal page orientation for printing.

See also: orientation, portrait

language extension procedure

An OPX procedure written in C++ that can be called from an OPL program.

See also: OPX, OXH

large bitmap

A FBS bitmap whose size is greater than a certain threshold value, currently set at 4Kb.

See also: small bitmap


Buttons that can latch change their state when pressed and stay in that state until changed again by the user.

latching command button

A command button that remains depressed when the pointer is removed from it.

See also: command button


The time taken between the occurrence of an event and the response to it.

latitude editor

A concrete control that supports editing a latitude value.

layout coordinate

x,y co-ordinates whose origin is the top left hand corner of the text area.

See also: text area, window co-ordinates

layout engine

FORM's text layout engine lays out editable text in a window.

See also: editable text

layout object

Represents necessary interface between document and view.

See also: text document


To leave, is to invoke the function User::Leave(). This causes a return to the current trap harness.

A function may also leave because a function it called left.

See also: trap harness, cleanup stack

left adjust

The number of pixels to move before displaying a character.

See also: right adjust

left text margin

The distance between the leftmost extent of a paragraph and the left edge of the text area.

An increasing left text margin width causes a scroll right to occur (text moves leftwards) and a decreasing left text margin width causes a scroll left to occur (text moves rightwards).

For an illustration of the left text margin, see Screen layout.

See also: text area, paragraph


The length of data currently represented by a descriptor.


Text Views : A line of text as seen on the view. A line is a member of just one paragraph. One paragraph may consist of many lines. Lines only apply to text that has been formatted.

ETel : A physical line from which calls are made.

See also: line capability, phone, callparagraph, formatted band,

line capabilities

The things that an ETel line can do. Includes; ability to connect to data, voice or fax calls; detect the hook and line status, create calls.

See also: line

line cursor

Indicator in line cursor margin, used to indicate which line the cursor is on.

See also: line cursor margin, cursor

line cursor margin

Margin used for line cursor.

See also: view rectangle, label margin, line cursor

line primitive

A graphics operation to draw, (using the pen), a line or sequence of lines.

See also: pen, polyline, graphics operation

line status

In the context of ETel, the current status of calls on the line, e.g. dialling.


Objects or data items connected together to form a meaningful sequence. Also known as a 'queue'.

local file system

A file system which mediates access to any devices local to the machine, all of which use native machine formats.

See also: file system

local time

The date and time taking into account the current time zone's offset from universal time.

See also: universal time

location area code

This specifies the general location, similar to an STD code for mobile numbers.

long network name

Networks have both short and long names. The long name is used in preference. In EPOC the long name is 16 characters.

See also: short network name

longitude editor

A concrete control which supports editing a longitude value.

low water mark

When this point is reached in a receive buffer, a flow control resume event is triggered.

See also: XON