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Learn how to write skeleton code for creating a Bitmap object from an image file and how to display the bitmap. Learn two different ways to handle the image file, one of which results in a security issue that must be handled at compile time. Learn how to extract the BitmapData object from the Bitmap object and how to use the getPixels, setPixels, and setPixel32 methods to process the pixels in the bitmap. Learn how to apply a color inversion algorithm to invert the colors in a BitmapData object.
Click Bitmap05 or Bitmap06 to run the ActionScript programs from this lesson. (Click the "Back" button in your browser to return to this page.)

Table of contents



All references to ActionScript in this lesson arereferences to version 3 or later.

This tutorial lesson is part of a series of lessons dedicated to object-oriented programming(OOP) with ActionScript.

Several ways to create and launch ActionScript programs

There are several ways to create and launch programs written in the ActionScript programming language.Many of the lessons in this series will use Adobe Flex as the launch pad for the sample ActionScript programs.

An earlier lesson titled The Default Application Container provided information on how to get started programming with Adobe's Flex Builder 3. (See Baldwin's Flex programming website .) You should study that lesson before embarking on the lessons in this series.

Some understanding of Flex MXML will be required

I also recommend that you study all of the lessons on Baldwin's Flex programming website in parallel withyour study of these ActionScript lessons. Eventually you will probably need to understand both ActionScript and Flex and the relationships that exist betweenthem in order to become a successful ActionScript programmer.

Will emphasize ActionScript code

It is often possible to use either ActionScript code or Flex MXML code to achieve the same result. Insofaras this series of lessons is concerned, the emphasis will be on ActionScript code even in those cases where Flex MXML code may be a suitable alternative.

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 . Screen output for both programs.
  • Figure 2 . Program file structure for the program named Bitmap05.


  • Listing 1 . MXML code for the program named Bitmap05.
  • Listing 2 . Beginning of the ActionScript Driver class.
  • Listing 3 . Start the process of loading the image file.
  • Listing 4 . Beginning of the complete event handler.
  • Listing 5 . Encapsulate the Bitmap in an Image object.
  • Listing 6 . Clone the original Bitmap to create a duplicate Bitmap.
  • Listing 7 . Modify the duplicate Bitmap.
  • Listing 8 . Beginning of the modify method.
  • Listing 9 . Process pixels using the getPixels and setPixels methods.
  • Listing 10 . Modify the pixels in the rectangular region.
  • Listing 11 . Put the modified pixel data back into the same rectangular region.
  • Listing 12 . Process pixels using the setPixel32 method.
  • Listing 13 . Put borders on the top and bottom edges.
  • Listing 14 . Return to the complete event handler.
  • Listing 15 . Beginning of the invert method.
  • Listing 16 . Apply the inversion algorithm.
  • Listing 17 . Put the modified pixel data back into the BitmapData object.
  • Listing 18 . Code that is different in the program named Bitmap06.
  • Listing 19 . MXML code for the program named Bitmap05.
  • Listing 20 . ActionScript code for the program named Bitmap05.
  • Listing 21 . ActionScript code for the program named Bitmap06.

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.
yes that's correct
I think
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
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
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
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 did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit 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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