xwininfo

This command will return information on a specified window.

Here is an example:

xwininfo

xwininfo: Please select the window about which you

would like information by clicking the

mouse in that window.

xwininfo: Window id: 0x34006c2 "The GIMP"

Absolute upper-left X: 1150

Absolute upper-left Y: 688

Relative upper-left X: 5

Relative upper-left Y: 23

Width: 192

Height: 245

Depth: 24

Visual Class: TrueColor

Border width: 0

Class: InputOutput

Colormap: 0x20 (installed)

Bit Gravity State: NorthWestGravity

Window Gravity State: NorthWestGravity

Backing Store State: NotUseful

Save Under State: no

Map State: IsViewable

Override Redirect State: no

Corners: +1150+688 -58+688 -58-117 +1150-117

-geometry 4x0-53+665