QComboBox怎么在pyqt5中使用

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类归属

PyQt5->QtWidgets->QComboBox

继承关系

PyQt5->QObject and QPaintDevice->QWidget->QFontComboBox->QComboBox

熟悉一下代码，直接就可以用了。

【如下代码，完全复制，直接运行，即可使用】

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

items_list=["C","C++","Java","Python","JavaScript","C#","Swift","go","Ruby","Lua","PHP"]

datas_list=[1972,1983,1995,1991,1992,2000,2014,2009,1995,1993,1995]

################################################
class Widget(QWidget):
  def __init__(self, *args, **kwargs):
    super(Widget, self).__init__(*args, **kwargs)
    layout = QVBoxLayout(self)
    self.combobox1 = QComboBox(self, minimumWidth=200)
    self.combobox2 = QComboBox(self, minimumWidth=200)
    self.combobox3 = QComboBox(self, minimumWidth=200)
    self.combobox4 = QComboBox(self, minimumWidth=200)

    layout.addWidget(QLabel("增加单项，不带数据", self))
    layout.addWidget(self.combobox1)
    layout.addItem(QSpacerItem(20, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))

    layout.addWidget(QLabel("增加单项，附带数据", self))
    layout.addWidget(self.combobox2)
    layout.addItem(QSpacerItem(20, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))

    layout.addWidget(QLabel("增加多项，不带数据", self))
    layout.addWidget(self.combobox3)
    layout.addItem(QSpacerItem(20, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))

    layout.addWidget(QLabel("设置模型，不带数据", self))
    layout.addWidget(self.combobox4)


    #初始化combobox
    self.init_combobox1()
    self.init_combobox2()
    self.init_combobox3()
    self.init_combobox4()

    #增加选中事件
    self.combobox1.activated.connect(self.on_combobox1_Activate)
    self.combobox2.activated.connect(self.on_combobox2_Activate)
    self.combobox3.activated.connect(self.on_combobox3_Activate)
    self.combobox4.activated.connect(self.on_combobox4_Activate)

  ####### addItem() 增加单项元素，不带数据 #########
  def init_combobox1(self):
    for i in range(len(items_list)):
      self.combobox1.addItem(items_list[i])
    self.combobox1.setCurrentIndex(-1)

  def on_combobox1_Activate(self, index):
    print(self.combobox1.count())
    print(self.combobox1.currentIndex())
    print(self.combobox1.currentText())
    print(self.combobox1.currentData())
    print(self.combobox1.itemData(self.combobox1.currentIndex()))
    print(self.combobox1.itemText(self.combobox1.currentIndex()))
    print(self.combobox1.itemText(index))

  ####### addItem() 增加单项元素，附带数据 #########
  def init_combobox2(self):
    for i in range(len(items_list)):
      self.combobox2.addItem(items_list[i],datas_list[i])
    self.combobox2.setCurrentIndex(-1)

  def on_combobox2_Activate(self, index):
    print(self.combobox2.count())
    print(self.combobox2.currentIndex())
    print(self.combobox2.currentText())
    print(self.combobox2.currentData())
    print(self.combobox2.itemData(self.combobox2.currentIndex()))
    print(self.combobox2.itemText(self.combobox2.currentIndex()))
    print(self.combobox2.itemText(index))

  ####### addItems() 增加多项元素，不带数据 #########
  def init_combobox3(self):
    self.combobox3.addItems(items_list)
    self.combobox3.setCurrentIndex(-1)

  def on_combobox3_Activate(self, index):
    print(self.combobox3.count())
    print(self.combobox3.currentIndex())
    print(self.combobox3.currentText())
    print(self.combobox3.currentData())
    print(self.combobox3.itemData(self.combobox3.currentIndex()))
    print(self.combobox3.itemText(self.combobox3.currentIndex()))
    print(self.combobox3.itemText(index))

  ####### setModel() 设置数据模型，不带数据 #########
  def init_combobox4(self):
    self.tablemodel = QStringListModel(items_list)
    self.combobox4.setModel(self.tablemodel)
    self.combobox4.setCurrentIndex(-1)

  def on_combobox4_Activate(self, index):
    print(self.combobox4.count())
    print(self.combobox4.currentIndex())
    print(self.combobox4.currentText())
    print(self.combobox4.currentData())
    print(self.combobox4.itemData(self.combobox4.currentIndex()))
    print(self.combobox4.itemText(self.combobox4.currentIndex()))
    print(self.combobox4.itemText(index))

if __name__ == "__main__":
  app = QApplication(sys.argv)
  w = Widget()
  w.show()
  sys.exit(app.exec_())

以上就是QComboBox怎么在pyqt5中使用，小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注亿速云行业资讯频道。