Capture Screen Image in C++ on OSX

Question

Is there a way to programatically take a screenshot (or somehow get access to an image) of the current screen display on a mac?

Preferably, in C++, not Objective-C.<

Answer 1

Use screencapture(1).

http://developer.apple.com/mac/library/documentation/Darwin/Reference/ManPages/man1/screencapture.1.html

Invoke it with system() or posix_spawn().