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Listing 4 begins by adding a Rect object whose dimensions cover one-hundred percent of the Flash window. (Note that all of the elements in Listing 4 are in the spark namespace named "s".)

What is a fill element?

Unfortunately, this is the point where you need become heavily involved in the concepts of object-oriented programming in ActionScript for the code in Listing 4 to makesense. I apologize in advance for the explanation that follows. However, I don't know any other way to explain it, so I will explain it using a combination ActionScript OOPterminology and mxml terminology.

What is a Rect element?

Rect is a class that represents a rectangle in the ActionScript packagenamed spark.primitives . The mxml code in Listing 4 causes an object of the Rect class to be placed in the Flash window in front of the white default background. As mentioned above, the dimensions of therectangle are such as to cover the entire Flash window, even when the size of the window is changed by the user. (Note that the name Rect begins with an upper-case character. That is a clue as to what is going on.)

Once again, what is a fill element?

Note that the name of this element begins with a lower-case character. That is also a clue as to what is going on. The fill element refers to a property of the Rect object. According to the documentation , the value of this property must be of type IFill .

What is type IFill ?

IFill is the name of an ActionScript interface . (Note that IFill begins with an upper-case character. Once again, that is a clue.) Declaring that the value of the property named fill must be of type IFill means that the value must be a reference to an object of any class that satisfies the interface requirements defined by IFill .

According to the documentation , the following classes satisfy that requirement:

Add a LinearGradient object

The next thing that appears in Listing 4 is an element named LinearGradient . (Note that LinearGradient begins with an upper-case character.) According to the documentation , LinearGradient is a class in the ActionScript package named mx.graphics . (It isn't clear how it can be accessed via the spark namespace, but as you can see in Listing 4, that is obviously thecase.)

What have we accomplished so far?

Up to this point, the interpretation of the code in Listing 4 is that we have:

  1. Created a Rect object, set its width and height attributes to completely cover the Flash window, and added it to the FlashWindow.
  2. Created a LinearGradient object, set its rotation attribute to 90, and assigned its reference to the fill property of the Rect object.

The element named entries

The next thing that we see in Listing 4 is an element named entries that is added to the LinearGradient element. Once again, note that this name begins with a lower-case character.

The documentation tells us that the LinearGradient class has a property named entries . The documentation further tells us that the value of this property must be an array containing references to objects of the class named GradientEntry . These objects "define the fill pattern for the gradient fill."

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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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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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