KDE environment software can't use Fcitx

[xuweirong]

Hi,guys .
I just installed gentoo and KDE environment.
I want to use Fcitx input method to input other language .
But Fcitx can't work with the software in KDE environment ,such as terminal and file manager , but work in the google-chrome ,hexchat and other software i emerge installed .
I cant' t figure out what is the problem ? ,i need you guys help .

[xuweirong]

problem solve .
i probablely forget update the ~/.xprofile
when i source ~/.xprofile and reboot
it fixed