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Maplets[Elements]

  

Label

  

define a label in a Maplet application

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

Label(opts)

Label[refID](opts)

Parameters

opts

-

equation(s) of the form option=value where option is one of background, caption, enabled, font, foreground, halign, height, image, reference, tooltip, valign, visible, or width; specify options for the Label element

refID

-

name or string; reference to the element

Description

• 

The Label window body element defines a label in a Maplet application.

  

 

• 

The Label element features can be modified by using options.  To simplify specifying options in the Maplets package, certain options and contents can be set without using an equation. The following table lists elements, symbols, and types (in the left column) and the corresponding option or content (in the right column) to which inputs of this type are, by default, assigned.

Elements, Symbols, or Types

Assumed Option or Content

 

 

Font element

font option

Image element

image option

refID

reference option

string or symbol

caption option

 

 

• 

For large sections of text, use a TextBox element (instead of a Label element) with the option 'editable' = 'false' and appropriate values for the height and width options.

• 

A Label element can contain a Font element to specify the font option and an Image element to specify the image option.

• 

A Label element can be contained in a Maplet, BoxLayout, GridLayout or BorderLayout element, or Maplet element in a nested list representing a box layout.

• 

The following table describes the control and use of the Label element options.

  

An x in the I column indicates that the option can be initialized, that is, specified in the calling sequence (element definition).

  

An x in the R column indicates that the option is required in the calling sequence.

  

An x in the G column indicates that the option can be read, that is, retrieved by using the Get tool.

  

An x in the S column indicates that the option can be written, that is, set by using the SetOption element or the Set tool.

Option

I

R

G

S

 

 

 

 

 

background

x

 

x

x

caption

x

 

x

x

enabled

x

 

x

x

font

x

 

x

x

foreground

x

 

x

x

halign

x

 

 

 

height

x

 

 

 

image

x

 

 

x

reference

x

 

 

 

tooltip

x

 

x

x

valign

x

 

 

 

visible

x

 

x

x

width

x

 

 

 

 

 

 

 

 

• 

The opts argument can contain one or more of the following equations that set Maplet application options.

  

 

  

background = color

  

The color of the highlights of the label.  This can be a recognized color name, an RGB color structure, or a string of the form "#RRGGBB" where each pair is a two-digit hexadecimal number.

  

 

  

caption = string or symbol

  

The caption that appears on the label.

  

 

  

enabled = true or false

  

Whether a label can be selected.  If enabled is set to false, the label is dimmed. By default, the value is true.

  

 

  

font = Font element or reference to a Font element (name or string)

  

The text font in the label.

  

 

  

foreground = color

  

The face color of the label.

  

 

  

halign = left, center, or right

  

Specifies the horizontal alignment for the label contents.

  

 

  

height = posint

  

The height in pixels. By default the label is sized to fit its content.

  

 

  

image = Image element or reference to an Image element (name or string)

  

A reference to an Image element.

  

 

  

reference = name or string

  

A reference for the Label element.

  

If the reference is specified by both an index, for example, Label[refID], and a reference in the calling sequence, the index reference takes precedence.

  

 

  

tooltip = symbol or string

  

Text that appears in the tooltip help window.

  

 

  

valign = top, center, or bottom

  

Specifies the vertical alignment for the label contents.

  

 

  

visible = true or false

  

Whether the label is visible to the user.  By default, the value is true.

  

 

  

width = posint

  

The width in pixels. By default the label is sized to fit its content.

Examples

withMaplets[Elements]:

mapletMapletLabelEnter your name: ,'font'=Fontcourier,14,TextField['IF1']20,LabelUse the format ,'font'=Fonthelvetica,12,LabelJohn W. Smith,'font'=Fonthelvetica,italic,12,ButtonOK,Shutdown'IF1',ButtonCancel,Shutdown:

Maplets[Display]maplet

See Also

Maplets/WindowBodyElements

Maplets[Display]

Maplets[Elements]

Maplets[Elements][Button]

Maplets[Elements][Font]

Maplets[Elements][Image]

Maplets[Elements][Maplet]

Maplets[Elements][SetOption]

Maplets[Elements][TextField]

Maplets[Tools][Get]

Maplets[Tools][Set]

Overview of Maplet Applications

plot[color]

 


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