$ sudo apt-get update
$ sudo apt-get install fcitx-qimpanel-configtool 

fcitx-qimpanel-configtool is installed in your system.

Make ensure the fcitx-qimpanel-configtool package were installed using the commands given below,

$ sudo dpkg-query -l | grep fcitx-qimpanel-configtool *

You will get with fcitx-qimpanel-configtool package name, version, architecture and description in a table

fcitx-qimpanel-configtool package basic information: