# CField (issue 3.0) By Donghu Zhang, Reviewed by Shuming Lin
# CDialog (issue 3.1) By Donghu Zhang, Reviewed by Xinzhu Li
# CLabel (issue 3.2) By Shuming Lin and Renjun Zhuo, Reviewed by Shuming LinXinzhu Li
# CLineEdit (issue 3.3) By Xinzhu Li, Reviewed by Donghu Zhang
