<< Chapter < Page Chapter >> Page >

In addition, in design mode, the lower-right pane becomes a property window.You can select a component in the design pane and then set various properties such as font, color, etc., in the properties window.

XML code is automatically updated

When you drag a component into the design pane and set properties on that component, the XML code is automatically updated to reflect the addition of thatcomponent with the specified properties. Therefore, when using Flash Builder 4 in design mode,you can largely avoid having to write raw XML code.

Flash Builder 4 versus the free open-source SDK

This visual design capability is probably the most important feature of Flash Builder 4 that separates it from the free open-source Flex 3 and Flex 4 SDKs. Flash Builder4 lets you design your layout visually and it writes much of the XML code for you.

Documentation

The Adobe site provides extensive online documentation for Flex, Flash Builder, and ActionScript. You will find numerous links to documentationin Resources . This is where you go to learn how to use the Flex language in detail.

Documentation format

In its default form, much of the documentation is divided into three frames, two stacked vertically on the left and one on the right. If you select All Packages and Frames (or something similar) at the top of the rightmost frame, you will see Flex XML elements (classes) listed in the lower-left frame.

Select No Frames

If you select No Frames at the top, (which is not always available) the two frames on the left will disappear. This is useful if you want to use the Find capability of your browser to search for a word in the right frame. You can restore thethree-frame format by selecting Frames at the top of the page.

Select a class

If you select a class, such as Application , in the lower-left frame, information about that class appears in the rightmost frame. If you find two ormore classes with the same name in the lower-left frame, one probably refers to the Flex 3 version of the class and the other probably refers to the Flex 4version of the class. You must be very careful to make certain that you know which you are reading about. Reading about one and thinking that you are readingabout the other can lead to very frustrating programming errors.

Styles

Many of the components in Flex 3 have a variety of styles that can be applied to the component either through the specification ofattributes in the XML element or the use of a Style element that resembles a style sheet. (That is much less true for Flex 4, which takes a different approach.) The Flex 3 example that I will explain in the next section will illustrate the relationship among the following properties and styles for the Application element :

  • backgroundColor
  • backgroundGradientColors
  • backgroundAlpha

Discussion and sample code

The Application element (see Listing 2) is a container into which you can place other components including other containers. Future lessons will be concerned withthe containment properties of the Application element. In this lesson, I will concentrate on the properties and styles listed above that can be applied to that element.

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Introduction to xml. OpenStax CNX. Dec 02, 2014 Download for free at https://legacy.cnx.org/content/col11207/1.18
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Introduction to xml' conversation and receive update notifications?

Ask