Capturing an image of the whole screen

Questions
1

Is there a way to capture an image of the whole screen and save it to the “Documents” sprite pack?

2

The only way to do this would be to draw everything you’re drawing on the screen in a setContext() enclosure to an image then use saveImage(image). I do this in my game to draw post processing effects.

3

ie something like this

img=image(WIDTH,HEIGHT)
setContext(img)
--drawing code here
setContext()
saveImage("Documents:ImageName",img)
4

What does clearing the setContext() do?

EDIT: Never mind, I figured it out.

5

Thanks for all your help guys!