libclxclient3 software package provides X Window System C++ access library, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libclxclient3
libclxclient3 is installed in your system.
Make ensure the libclxclient3 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libclxclient3 *
You will get with libclxclient3 package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Libraries |
| Package | libclxclient3 |
| Version | 3.6.1-6 |
| Description | X Window System C++ access library |
| Sub Section | libs |