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The skeleton code

The skeleton code for a Flex 4 project is shown in Listing 3.

Skeleton mxml code for a new flex 4 project.

<?xml version="1.0" encoding="utf-8"?><s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark"xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955"minHeight="600"><fx:Declarations><!-- Place non-visual elements (e.g., services, value objects) here --></fx:Declarations></s:Application>

This is not the first time that you have seen this code. I discussed the skeleton code for a Flex 4 project in an earlier lesson having to do withnamespaces in Flex 4. Therefore, Listing 3 shouldn't require any further discussion

The mxml file for AppBackground03

An XML listing for the Flex 4 application named AppBackground03 is shown in Listing 4.

Flex 4 application named appbackground03.

<?xml version="1.0" encoding="utf-8"?><!--AppBackground03.mxml This is a Flex 4 replica of the Flex 3 project namedAppBackground01. --><s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"xmlns:s="library://ns.adobe.com/flex/spark" backgroundColor="#ff0000"><s:Rect width="100%" height="100%"><s:fill><s:LinearGradient rotation="90"><s:entries><s:GradientEntry color="0x00FF00" ratio="0.0"alpha="0.66"/><s:GradientEntry color="0x0000FF" ratio="1.0"alpha="0.66"/></s:entries></s:LinearGradient></s:fill></s:Rect></s:Application>

Essentially the same output

This Flex 4 code produces essentially the same visual output as the Flex 3 code shown in Listing 2. As you can see, however, this code is much more complicatedthan the code in Listing 2. (Remember, Flex 4 is more powerful but is also more complicated.) Not only is the code more complicated, but the concepts behind the code are also more complicated.

A style named backgroundGradientColors in Flex 3

The Flex 3 Application class has a property named backgroundColor , and a large number of styles including backgroundGradientColors and backgroundAlpha . The code in Listing 2 uses that property and those styles to control the appearance ofthe Flash window in Flex 3. Of particular significance here is the style named backgroundGradientColors .

No style named backgroundGradientColors in Flex 4

The Flex 4 Application class also has a property named backgroundColor . The value of that property is set to red in Listing 4. It also has a style named backgroundAlpha but I'm not sure what its purpose is. However,it does not have a style named backgroundGradientColors . Therefore, some other way must be found to implement a gradient color scheme inFlex 4 in order to replicate the behavior of the Flex 3 project shown in Listing 2.

Replicating the behavior of AppBackground01

There may be a variety of ways to accomplish this. One of those ways is to cover the entire Flash window with a rectangle and cause the rectangle toexhibit the desired gradient characteristics. This is illustrated in Listing 4.

Questions & Answers

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
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
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
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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what is hormones?
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Source:  OpenStax, Introduction to xml. OpenStax CNX. Dec 02, 2014 Download for free at https://legacy.cnx.org/content/col11207/1.18
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