PyQt5 – 在组合框中通过文本查找项目
在这篇文章中,我们将看到如何在文本的帮助下找到项目的索引。我们知道我们可以在addItems方法的帮助下添加项目,以便在findText方法的帮助下找到项目。
语法: combo_box.findText(text)
参数: 它使用字符串作为参数。
返回: 它返回整数,即文本的索引,如果文本不存在则返回-1。
以下是实现方法
# importing libraries
from PyQt5.QtWidgets import *
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import *
from PyQt5.QtCore import *
import sys
class Window(QMainWindow):
def __init__(self):
super().__init__()
# setting title
self.setWindowTitle("Python ")
# setting geometry
self.setGeometry(100, 100, 600, 400)
# calling method
self.UiComponents()
# showing all the widgets
self.show()
# method for widgets
def UiComponents(self):
# creating a combo box widget
self.combo_box = QComboBox(self)
# setting geometry of combo box
self.combo_box.setGeometry(200, 150, 120, 30)
# geek list
geek_list = ["Geek", "Geeky Geek", "Legend Geek", "Ultra Legend Geek"]
# adding list of items to combo box
self.combo_box.addItems(geek_list)
# text
text = "Legend Geek"
# finding index of text
index = self.combo_box.findText(text)
# label to show index
label = QLabel(text + " index : " + str(index), self)
# setting geometry of label
label.setGeometry(200, 200, 200, 30)
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app
sys.exit(App.exec())
Python
输出: