How to increase/decrease brightness/sharpness

[rishiraj]

Hi everyone,
I downloaded the 'imageviewer' application.I want to implement basic photo editing features like increase/decrease brightness/sharpness on the displayed pic.Please give me some idea/advice on how to proceed.Code samples and examples would be great.
Thanks in advance.

[jpn]

Something you might want to check out: http://labs.trolltech.com/blogs/2008...ming-qpixmaps/

[rishiraj]

Hi again,
'QPixmapFilter' is definitely a useful class but it's available in 4.5 not 4.4(sorry,forgot to mention which version of Qt I was using ie. 4.4).Any examples which might give me some idea on how to change the brightness/contrast etc using Qt 4.4?
Thank you for your time.