How xpick works
The simplest way to invoke xpick is just to type
xpickYou will then be prompted to supply an output file name.
Alternatively, you can also specify the file name directly on the command line, e.g.,
When xpick is invoked, the user sees a blinking rectangle surrounding the contents of the window in which the mouse pointer is currently placed. When the mouse is moved to a different window, the perimeter automatically changes to the size of the new window. If the mouse pointer is placed on the Window Manager border of a window, then the blinking rectangle will surround the window together with the Window Manager border. To select the image inside the blinking rectangle it is sufficient to click the left mouse button.
If a user-defined perimeter is required, then hold down the left mouse button to choose the first corner of the perimeter and then drag the mouse to define the opposite corner. The blinking rectangle will expand with the movement of the mouse.
After the rectangle has been selected the user should
<SPACE> bar to pick the image.
<SPACE> bar the user may to use the mouse to produce,
if required, some changes inside the selected area, for
example, to change the palette or display a pop-up menu.