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For example, Figure 5 shows the results of dragging two Label controls, one HSlider control, and one Image control from the Components tab of Figure 4 to the Design tab of Figure 5. (No attempt has been made to set property values on any of the controls shown in Figure 5.) .

XML code before setting properties

If you select the Source tab at this point, you will see the XML code shown in Listing 1.

Xml code before setting properties for sliderchangeevent01.

<?xml version="1.0" encoding="utf-8"?><mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"><mx:Label text="Label"/><mx:Label text="Label"/><mx:HSlider/><mx:Image/></mx:Application>

Compile and run

As you can see, the XML code in Listing 1 is pretty sparse. You could compile and run the application at this point. All you would see would betwo labels each containing the text Label and a slider covering the default numeric range from 0 to 10.

Put some meat on the bones

We will need to put some meat on the bones of this skeleton mxml code in order to create our Flex application. We can accomplish that by settingattribute values that correspond to properties of the controls.

Setting attribute values

Once again, we have three choices:

  1. Go hardcore and edit the XML code shown in Listing 1 to add the necessary attributes.
  2. Stay in Design mode, select each component in the Design tab, and use the Flex Properties tab shown in Figure 6 to set the properties on that component.
  3. A combination of 1 and 2 above.

The flex builder 3 properties tab exposed.

Missing tab.
The Flex Builder 3 Properties tab exposed.

The Flex Properties tab

When you select the Design tab shown in Figure 5, the Flex Properties tab shown in Figure 6 appears in the bottom-right of the IDE.

The appearance of the Flex Properties tab depends on which component is selected in the Design tab. Figure 5 shows one of the Label controls selected, and Figure 6 shows the Flex Properties tab corresponding to a Label control.

You will see a very similar properties tab if you create a new Flash Builder 4 project and specify use of the Flex 3 compiler. Some of theitems are in different locations than Figure 6 but it appears that the Flash Builder 4 properties tab has the same items for a Flex 3 project.

A variety of user input controls

The Flex Properties tab contains a variety of user input controls that allow you to specify values for many of the commonly used properties that areallowed for the selected component.

Note, however, that the documentation for the Label control lists many properties that are not supported by the Flex Properties tab shown in Figure 6. You can increase the number of properties shown in the tab byselecting one of the controls at the top of the tab that converts the display into an alphabetical list of properties. However, even this doesn't seemto show all of the properties defined by and inherited by some components.

If you need to set properties that are not supported by the Flex Properties tab, you probably have no choice but to select the Source tab shown in Figure 5 and write mxml code for those properties.

Questions & Answers

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
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
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
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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