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Learn how to write inline event handler code to handle slider change events.
Click SliderChangeEvent01 , SliderChangeEvent02 , and SliderChangeEvent03 to run the Flex programs from this lesson. (Click the "Back" button in your browser to return to this page.)

Table of contents



This lesson is part of a series of tutorial lessons dedicated to programming with Adobe Flex. The material in this lesson applies to both Flex 3 and Flex 4.

Viewing tip

I recommend that you open another copy of this document in a separate browser window and use the following links to easily find and view the figures andlistings while you are reading about them.


  • Figure 1 . Browser image at startup for the Flex 3 project.
  • Figure 2 . A toolTip on the slider.
  • Figure 3 . Changing the height of the image.
  • Figure 4 . Flex Builder 3 Components tab exposed.
  • Figure 5 . Drag controls onto the Flex Builder 3 Design tab.
  • Figure 6 . The Flex Builder 3 Properties tab exposed.
  • Figure 7 . Browser image at startup for the hybrid project.
  • Figure 8 . Flex Builder 4 Components tab exposed.
  • Figure 9 . Drag controls onto the Flash Builder 4 Design tab.


  • Listing 1 . XML code before setting properties forSliderChangeEvent01.
  • Listing 2 . Beginning of XML code for SliderChangeEvent01.
  • Listing 3 . Create and condition the slider.
  • Listing 4 . Import an image.
  • Listing 5 . Mxml code for the layout shown in Figure 9.
  • Listing 6 . Complete listing of SliderChangeEvent01.
  • Listing 7 . Complete listing of SliderChangeEvent02.
  • Listing 8 . Complete listing of SliderChangeEvent03.

Supplemental material

I also recommend that you study the other lessons in my extensive collection of online programming tutorials. You will find a consolidated index at www.DickBaldwin.com .

General background information

If you learn how to program using ActionScript 3, you will probably integrate large amounts of ActionScript code into your Flex projects to provide complexevent handling. In the meantime, it is possible to provide simple event handlers in Flex by embedding a very small amount of ActionScript code in your Flex code.I will illustrate and explain that capability in this lesson.


I encourage you to run the online version of the programs from this lesson before continuing.

Three Flex projects

I will present and explain three Flex projects in this lesson. The first project is named SliderChangeEvent01 . This project was first developed using Flex Builder 3 and later developed using the Flex 3 compiler and Flash Builder 4.The results were essentially the same in both cases. This project uses classes from the Flex 3 (mx) library exclusively. (The screen shots shown in Figure 4, Figure 5, and Figure 6 are from Flex Builder 3.)

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
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
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
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.
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
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
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