I am using a Java applet to take a screenshot of the web browser, using Java's Robot class.
Robot objRobot = new Robot ();
BufferedImage objBufferedImage = objRobot.createScreenCapture(objRectArea);
The thing works good in Windows system, taking screenshot. But in case of Mac OS X I get a blank image.
When I check the event viewer, I see the following error:
invalid context
invalid pixel format
CoreAnimation: rendering error 506
The problem is occurring for all the browsers Safari, Firefox and Chrome. My applet is a signed applet.
What might be the reason?
My machine configuration is as follows:
OS : MAC OS X
Version : 10.6.4
I've sent the error message invalid pixel format to google and received a long list of results (close to 10.000) - it looks as if the problem is not a Java problem but a configuration issue on your Mac.
Try to change display resolutions and re-run your applet. Good chance, that the error is linked to some screen resolutions (external display?). Some suggestions on the web were to fully update you OSX.