XmHTML implements the following extensions to the HTML 3.2 standard.
The FRAMESET Extension
XmHTML widget's fully recognize and support the <FRAMESET> extension. See
the XmHTML Programmers Manual on
how you can add frame support to your application by using XmHTML.
Extensions to the <A> Element
Support for the <FRAMESET> extension also implies that XmHTML recognizes
the target attribute on the <A> element.
Besides being usefull for the frameset extension, the target attribute
can be usefull in a variety of other ways, e.i., one could use this extension
in a Hypertext Help system to indicate that something should be displayed in a
Extensions to the <FONT> Element
XmHTML widget's fully support the FACE tag on the HTML 3.2 <FONT>
element. This extension specifies the typeface of a font in which the text that
this element encloses should be rendered.
The value for this tag should be a quoted, comma seperated list of alternative
Extensions to the <OL> Element
XmHTML introduces the ISINDEX tag to the HTML 3.2 <OL> element.
Using this extension produces a Table of Contents by propagating the current
item numbering within nested lists:
<LI>The Basics of a XmHTML Widget
<OL ISINDEX TYPE="a">
<LI>Creating a XmHTML Widget
<LI>The XmHTML Widget's Text
<LI>Modifying the Document Appearance
is rendered as:
1. The Basics of a XmHTML Widget
1.a Creating a XmHTML Widget
1.b The XmHTML Widget's Text
2. Modifying the Document Appearance
This extension can be used with any combination of the TYPE and
A XmHTML Widget fully supports the file form input element. This element is
consists of a textfield with a pushbutton. When a user presses this button a
file selection dialog is displayed allowing the user to select a file for
The following attributes are recognized for this input element:
NAME=string, VALUE=string, SRC=string, SIZE=n, MULTIPLE
- Mandatory, name for this input field;
- optional, a label to be used for the pushbutton. The default
value is Browse...;
- optional, a file selection pattern to be used for the file
selection dialog. The default value is *;
- optional, the width of the textfield. The default value is
- optional, allows multiple file selection. Each file that is
selected via the file selection dialog is separated from already
selected files by a colon.
The ALIGN tag
The ALIGN tag is extended by one additional alignment, namely JUSTIFY. This
alignment will cause text to be justified between the text margins, causing
each line in a paragraph to have the same left and right margin. The last
line in a paragraph is never justified, it's alignment is determined by
the default alignment.
Hyphenation is not supported by this
extension, but may be added in the future when a LANGUAGE tag is added to the
This extension for the ALIGN tag is supported for the following elements:
The COLOR tag
XmHTML extends the use of the COLOR tag from the <FONT> element to
a number of other HTML elements. These elements are:
Colors are given in RGB as hexadecimal numbers (e.g. COLOR="#C0FFC0") or as
one of 16 widely understood color names. These colors were originally picked
as being the standard 16 colors supported with the Windows VGA palette
(or how low can you go).
Color names and sRGB values
| ||Black = "#000000"
|| ||Green = "#008000"|
| ||Silver = "#C0C0C0"
|| ||Lime = "#00FF00"|
| ||Gray = "#808080"
|| ||Olive = "#808000"|
| ||White = "#FFFFFF"
|| ||Yellow = "#FFFF00"|
| ||Maroon = "#800000"
|| ||Navy = "#000080"|
| ||Red = "#FF0000"
|| ||Blue = "#0000FF"|
| ||Purple = "#800080"
|| ||Teal = "#008080"|
| ||Fuchsia = "#FF00FF"
|| ||Aqua = "#00FFFF"|
©Copyright 1996-1997 by Ripley Software Development
Last update: April 3, 1998 by Koen