How to write a project to grab the UI into a image bitmap？？？

1073710317 · 03-28-2011, 10:29 PM

The Project is for writing a generic program which extracts list of applications that is running on Unix, and for each application, determine if it has a corresponding graphical UI interface, is so, the program should be able to grab the UI into a image bitmap. The program should be able to run in any Unix UI framework, such as CDE, KDE, X, Motif, et al.

bigearsbilly · 03-29-2011, 02:17 AM

there is a utility called xwd that may be of help:

http://www.manpagez.com/man/1/xwd/

comes standard with X windows.

theNbomr · 03-29-2011, 12:52 PM

The basic functionality of such a project is relatively pedestrian, if you make some gross assumptions. Problems that will complicate matters:

What about applications using an X server on another host?
What about applications whose windows are not fully in a visible state (on a different virtual desktop, for instance)?
What about applications that use GUIs not based on X?

A lot of the heavy lifting can be done with xwd, as already pointed out. There are also some existing tools to aid in tracking down X clients: xlsclients, xwininfo, xdpyinfo and possibly some other standard X tools. Some of these, xlsclients in specific, seem to not work as advertised in all settings.

--- rod.