edit /etc/profile and add these:

export LANG=en_us.UTF-8
export XMODIFIERS="@im=SCIM"
#export GTK_IM_MODULE=xim
export GTK_IM_MODULE=scim
export QT_IM_MODULE=scim
export XIM_PROGRAM=SCIM
export XIM=SCIM
export LC_CTYPE="zh_CN.gb2312"

su:scsioffice ~ # export |grep -i scim
declare -x GTK_IM_MODULE="scim"
declare -x QT_IM_MODULE="scim"
declare -x XIM="SCIM"
declare -x XIM_PROGRAM="SCIM"