Coordinate Capturing of selected area

pihu · 06-21-2005, 05:20 AM

Hi,

For my project i need to get the co-ordinates for the current window or the coordinates of selected area by mouse on desktop or current window.

This is supposed to be independent of KDE or Gnome or any other windows manager.

Any hints how to do it ???

Am i supposed to hook into Xlib calls or there is some other way possible ???

Pihu

Marius2 · 06-21-2005, 05:56 AM

Not sure if it does exactly what you need, but you may want to take a look at
xwininfo, which usually comes with an X server. Just type xwininfo at the
console.

HTH

pihu · 06-21-2005, 06:43 AM

No HTH I actually want to know that if I select some area like when we press the mouse button & drag it one some area on the desktop we select some part of the screen .So how to get the coordinates of that captured area.

Pihu

theYinYeti · 06-21-2005, 07:33 AM

I only have rough ideas for you, but I hope this helps anyway...
I think you can't do that directly. But you should be able to catch mouse events, and thus detect where it goes down, and where it goes up. Until the "up" event occurs, you would then have to forward each event to the underlying window.
Linux is all open-source, so you may find your answer in the source code of xev, or that of xmerlin (http://www.hellkvist.org/software/index.php#XMerlin). You may also find interesting things in the source code of http://mmkc.sourceforge.net/

Yves.

programmer_linux · 06-26-2005, 10:53 PM

hi ,
i am facing the same problem ,if u got any solution please let me know,
Thanks in advance