python pyqt5 QComboBox下拉列表框常用

用户5760343

发布于 2019-07-05 11:18:55

3.2K0

发布于 2019-07-05 11:18:55

文章被收录于专栏：sktjsktj

addItem() addItems() clear() count() currentText() currentIndex()

-- coding: utf-8 --

''' 【简介】 PyQt5中 QComboBox 例子

'''

import sys from PyQt5.QtCore import * from PyQt5.QtGui import * from PyQt5.QtWidgets import *

class ComboxDemo(QWidget): def init(self, parent=None): super(ComboxDemo, self).init(parent) self.setWindowTitle("combox 例子") self.resize(300, 90) layout = QVBoxLayout() self.lbl = QLabel("")

    self.cb = QComboBox()
    self.cb.addItem("C")
    self.cb.addItem("C++")
    self.cb.addItems(["Java", "C#", "Python"])
    self.cb.currentIndexChanged.connect(self.selectionchange)
    layout.addWidget(self.cb)
    layout.addWidget(self.lbl)
    self.setLayout(layout)

def selectionchange(self, i):
    self.lbl.setText(self.cb.currentText())
    self.lbl.adjustSize()

    print("Items in the list are :")
    for count in range(self.cb.count()):
        print('item' + str(count) + '=' + self.cb.itemText(count))
        print("Current index", i, "selection changed ", self.cb.currentText())

if name == 'main': app = QApplication(sys.argv) comboxDemo = ComboxDemo() comboxDemo.show() sys.exit(app.exec_())

本文参与腾讯云自媒体分享计划，分享自作者个人站点/博客。

原始发表：2019.06.26 ，如有侵权请联系 cloudcommunity@tencent.com 删除

本文分享自作者个人站点/博客前往查看

如有侵权，请联系 cloudcommunity@tencent.com 删除。

本文参与腾讯云自媒体分享计划，欢迎热爱写作的你一起参与！

登录后参与评论

0 条评论

热度