As you know, combobox is a very popular ui component.
It is a component that allows us to show the options of a category collectively and select one of them.
Let’s move on to its use.
self.combobox1 = QComboBox(self)
self.combobox1.resize(100, 25)
self.combobox1.addItem("Select One")
self.combobox1.addItem("Blue")
self.combobox1.addItem("Black")
self.combobox1.addItem("Yellow")
self.combobox1.move(10, 10)
self.combobox1.currentTextChanged.connect(self.handleCombobox1)
self.combobox2 = QComboBox(self)
self.combobox2.resize(100, 25)
self.combobox2.addItem("Select One")
self.combobox2.addItem("Blue")
self.combobox2.addItem("Black")
self.combobox2.addItem("Yellow")
self.combobox2.move(10, 40)
def handleCombobox1(self,value):
self.label1_combobox1.setText(value)
def handleCombobox2btnClick(self):
self.label2_combobox2.setText(self.combobox2.currentText())
Result:
Full source code:
from PyQt5 import QtWidgets
from PyQt5.QtWidgets import *
import sys
W_WIDTH = 400
W_HEIGHT = 250
W_X = 400
W_Y = 150
class CreateButton:
def __init__(self, window, text, width, height, x, y):
self.button = QtWidgets.QPushButton(window)
self.button.setText(text)
self.button.resize(width, height)
self.button.move(x, y)
def get_instance(self):
return self.button
class MainFrame(QMainWindow):
def __init__(self):
super(MainFrame, self).__init__()
self.init()
self.show()
def init(self):
self.resize(W_WIDTH, W_HEIGHT)
self.move(W_X, W_Y)
self.setWindowTitle("www.langpy.com | Python GUI Tutorial")
self.combobox1 = QComboBox(self)
self.combobox1.resize(100, 25)
self.combobox1.addItem("Select One")
self.combobox1.addItem("Blue")
self.combobox1.addItem("Black")
self.combobox1.addItem("Yellow")
self.combobox1.move(10, 10)
self.combobox1.currentTextChanged.connect(self.handleCombobox1)
self.label1_combobox1 = QLabel(self)
self.label1_combobox1.setText("")
self.label1_combobox1.move(125, 10)
self.combobox2 = QComboBox(self)
self.combobox2.resize(100, 25)
self.combobox2.addItem("Select One")
self.combobox2.addItem("Blue")
self.combobox2.addItem("Black")
self.combobox2.addItem("Yellow")
self.combobox2.move(10, 40)
self.label2_combobox2= QLabel(self)
self.label2_combobox2.setText("")
self.label2_combobox2.move(260, 40)
self.button_question = CreateButton(self, "Show Value", 120, 25, 120, 40).get_instance()
self.button_question.clicked.connect(self.handleCombobox2btnClick)
def handleCombobox1(self,value):
self.label1_combobox1.setText(value)
def handleCombobox2btnClick(self):
self.label2_combobox2.setText(self.combobox2.currentText())
app = QApplication(sys.argv)
win = MainFrame()
sys.exit(app.exec_())
