需要设置一些东西的
First change your locale to zh_CN.GBK,
then edit file .xinitrc in your home dir.
Add
export XMODIFIERS=@im=fcitx
fcitx &
That's all,restart your xwindow.
Some more:
1.Run qtconfig and change the option xim to over the spot.
2.export GTK_IM_MODULE=xim