PyQt5--QComboBox

# -*- coding:utf-8 -*-
'''
Created on Sep 20, 2018

@author: SaShuangYiBing

Comment: 
'''
import sys
from PyQt5.QtWidgets import QApplication,QWidget,QComboBox,QLabel

class New_test(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()
    
    def initUI(self):
        self.lbl = QLabel('fruit',self)
        combo = QComboBox(self)
        combo.addItem('apple')
        combo.addItem('pair')
        combo.addItem('banana')
        combo.move(50,50)
        self.lbl.move(50,150)
        combo.activated[str].connect(self.onActive)
        
        self.setGeometry(300,300,300,200)
        self.setWindowTitle('QCombobox')
        self.show()
        
    def onActive(self,text):
        try:            
            self.lbl.setText(text)
            self.lbl.adjustSize()
        except Exception as e:
            print (e)
        
if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = New_test()
    sys.exit(app.exec_())