xpick---Pick images on an X11-screen
Evgueni Tcherniaev MT
The program xpick lets you pick an image from an arbitrary window or rectangular area of an X11-server and write it to a file in a variety of formats, where the latter is defined by the extension used for the file name.
xpick [-] [<file>]
xpick accepts only one option (
which, when specified, picks an
image from the window under the mouse pointer.
This option is intented to pick images from pop-up
menus, which are on the screen only when a mouse
button is pressed and disappear immediately after
the button is released.