How to use 'gdk_pixbuf_get_from_drawable'

["ying lcs" <yinglcs gmail com>]

Hi,

I am trying to use 'gdk_pixbuf_get_from_drawable' to capture screen
shot from a gdk window.

Can you please tell me if I need to grab a semphore lock for the
window (so that nothing is being painted) before I call that function
gdk_pixbuf_get_from_drawable() to capture the pixbuf?

Thank you.