How to monitor the keyboard with X11

[fyplinux]

I intend to code a program that can capture all the input from the keyboard with the X11 library,in advance, the program can write something into the output stream, e.g, "a" is hitted, the program monitor this, and output “A”，where there is some mapping.

I think I need some guidelines to show me how to start. Could you give some websites or sample code, or anything else on this subject.

Regards.

Paul.

[gnusci]

I do not use directly X11, cause Xlib is not practical for directly applications programming:

http://tronche.com/gui/x/xlib-tutorial/2nd-program-anatomy.html
http://www.linuxjournal.com/article/4879
http://users.actcom.co.il/~choo/lupg/tutorials/xlib-programming/xlib-programming.html


for this purpose various toolkits have been written that give you layer with all appropriate the method for GUI app development instead:

http://www.sai.msu.su/sal/F/5/

In fact I use: www.fltk.org

[fyplinux]

I do not use directly X11, cause Xlib is not practical for directly applications programming:

http://tronche.com/gui/x/xlib-tutorial/2nd-program-anatomy.html
http://www.linuxjournal.com/article/4879
http://users.actcom.co.il/~choo/lupg/tutorials/xlib-programming/xlib-programming.html


for this purpose various toolkits have been written that give you layer with all appropriate the method for GUI app development instead:

http://www.sai.msu.su/sal/F/5/

In fact I use: www.fltk.org

I think if whatever these package can do, X11 can also do it. right ??

[gnusci]

Yeah, in theory you can do what ever you want the question is how long time can take.... anyway if you want to use X11 it is ok... I gave you links with some info...