How can I capture the window of another application and save it to disk from inside my program? I use Linux Fedora Core 3.

thanx

Koxin

when you say "capturing" - do you mean taking a snapshot of the application's window as an image? (just like hitting the print screen)
if that's what you mean, then take a look at xwininfo and import - i think they are part of the ImageMagick package. you can use xwininfo to get the properties for the target window and then use import to capture the contents of that window and put it in a file. something like:

# get the window id of an application window named "screen"
windowid=`/usr/bin/X11/xwininfo -name screen -display localhost:0 | grep
xwininfo | awk '{ print $4}'`
# do the capture
/usr/bin/import -silent -display localhost:0 -window $windowid ~/cms.gif

the commands above are on a script that is run by cron. requirement: the active terminal should be the X session itself.

that's exactly what I wanted. I only need to do this in C language and I'd like to capture the whole window not just the client area. By the way, do you know how to do this?

thanks

koxin

the commands are open source, so...... (check http://www.imagemagick.org/ for the source code).

sorry, not that into programming nowadays.

happy coding.