PyQt5 QDateEdit – 完成信号
在本文中,我们将了解如何获得 QDateEdit 的完成信号。发出此信号,编辑完成。当日期编辑失去焦点并且按下回车键时,会发生这种情况。该信号非常重要,因为它仅在编辑完成时才发生,不像其他信号在小时间间隔内获得很多时间。
为了做到这一点,我们使用带有 QDateEdit 对象的editingFinished
方法
Syntax : date.editingFinished.connect(method)
Argument : It takes method as argument
Return : It returns None
下面是实现
# 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, 500, 400)
# calling method
self.UiComponents()
# showing all the widgets
self.show()
# method for components
def UiComponents(self):
# creating a QDateEdit widget
date = QDateEdit(self)
# setting geometry of the date edit
date.setGeometry(100, 100, 150, 40)
# creating a label
label = QLabel("GeeksforGeeks", self)
# setting geometry
label.setGeometry(100, 150, 200, 60)
# making label multiline
label.setWordWrap(True)
# getting finished signal
date.editingFinished.connect(lambda: date_method())
# method called by date edit
def date_method():
# setting text to the label
label.setText("Finished Signal Emitted")
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app
sys.exit(App.exec())
输出 :