1.查看系统日志 less /var/logs/message May 12 21:54:41 localhost python: SELinux is preventing /usr/libexec/ibus-x11 from read access on the file /usr/share/themes/Ant/gtk-3.20/gtk.css.#012#012***** Plugin catchall (100. confidence) suggests ************
As Marco Zhou has said in the msdn forum (http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/b2428b85-adc9-4a1e-a588-8dbb3b9aac06/):Windows will only send WM_IME_SETCONTEXT message to the active window, Popup by default is designed to be shown