Graphics

basically, i either need to know how to manipulate screen memory on my PPC powerbook, which i assume will be the same for other macs, in code warrior, or what is the code warrior mac equivilent to graphics.h in PC c?
twizatAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

boonstraCommented:
Not an "easy" question, but you want to look at the CGrafPort data structure, and specifically the PixMap pointed to by the PixMapHandle.  To get the screen memory for the main screen, use GetMainDevide() to get the GDHandle of the main graphics device, then look at the PixMapHandle of that device.  Be sure to use GetPixBaseAddr to get the base address of screen memory, use rowBytes to decide how much memory is allocated for each row of pixels, use bounds to convert to screen coordinates, and use pixelSize to determine how many bits are allocated per pixel.

You can find more information by looking at the QuickDraw documentation:
http://developer.apple.com/techpubs/macos8/MultimediaGraphics/QuickDraw/quickdraw.html>, the offscreen graphics documentation:
http://developer.apple.com/techpubs/macos8/MultimediaGraphics/OffscreenGraphicsWorld/offscreengraphicsworld.html>, and some of the graphics sample code:
http://developer.apple.com/samplecode/Sample_Code/Graphics_2D.htm>
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
System Programming

From novice to tech pro — start learning today.