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Supplemental material

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

General background information

The ActionScript documentation provides sample programs on the following web pages that cannot be run without modification in a Flex application, even whenthe entire application is programmed in ActionScript .

The problem is that these two sample programs were written to be compiled and run as pure ActionScriptprograms. There are some additional requirements that you must adhere to when writing bitmap programs to run as Flex applications.


I will explain two sample programs in this lesson. Both programs are scaled down versions of the sample program provided in the first link listed above .

The first program that I will explain can be compiled and run as a pure ActionScript program. The second program can be compiled and run as a Flexapplication with the majority of the code being written in ActionScript.

Run the online version of the programs

I encourage you to run the online versions of the two programs before continuing with this discussion.

Screen output from the program named Bitmap03

Both programs are designed to display a red square, 100 pixels on a side, with a yellow cross in the square.The screen output for the pure ActionScript program named Bitmap03 is shown in Figure 1. (Note that the yellow cross is much more visible in the original than in this screen shot.)

Screen output from the program named bitmap03.

Screen output from the program named Bitmap03.

The size and position of the square varies

If you run the online version of this program, you will note that the size and position of the square varies depending on the width and height of thebrowser window.

Screen output from the program named Bitmap04

The program named Bitmap04 places the red square in a VBox container with a cyan background. The screen output is shown in Figure 2.

Screen output from the program named bitmap04.

Screen output from the program named Bitmap04.

Although the VBox moves horizontally to remain centered in the browser window, neither the VBox nor the red square change size as the width and height of the browser window is changed.

Discussion and sample code

I will explain two programs in the remainder of this lesson.

The program named Bitmap03

Will discuss in fragments

I will explain the code for these two programs in fragments. Complete listings of all the code for both of the programs are provided beginning withListing 8 near the end of the lesson.

Beginning of the class named Bitmap03

This program consists of a single class definition file named Bitmap03 , which begins in Listing 1.

Beginning of the class named bitmap03.

package { import flash.display.Spriteimport flash.display.Bitmap; import flash.display.BitmapData;public class Bitmap03 extends Sprite {public function Bitmap03(){ var bitmapData:BitmapData =new BitmapData(100, 100, false, 0xFF0000);

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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Source:  OpenStax, Object-oriented programming (oop) with actionscript. OpenStax CNX. Jun 04, 2010 Download for free at http://cnx.org/content/col11202/1.19
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