默认情况下，vnc窗口内容和windows之间无法copy文本。。打开方法为：
vncconfig -nowin -poll 1000
vncconfig帮助提示如下:

linux 505 # vncconfig --help
usage: vncconfig [parameters]
       vncconfig [parameters] -connect [:]
       vncconfig [parameters] -disconnect
       vncconfig [parameters] [-set] = ...
       vncconfig [parameters] -list
       vncconfig [parameters] -get 
       vncconfig [parameters] -desc 

Parameters can be turned on with - or off with -=0
Parameters which take a value can be specified as - 
Other valid forms are = -= --=
Parameter names are case-insensitive.  The parameters are:

Global Parameters:
  poll           - How often to poll for clipboard changes in ms (default=0)
  SendPrimary    - Send the PRIMARY as well as the CLIPBOARD selection
                   (default=1)
  iconic         - Start with window iconified (default=0)
  nowin          - Don't display a window (default=0)
  display        - The X display (default=)
  Log            - Specifies which log output should be directed to which
                   target logger, and the level of output to log. Format is
                   ::[, ...]. (default=)