PyQt5 QCalendarWidget 图标改变信号
在这篇文章中,我们将看到如何从QCalendarWidget获得图标改变的信号。当日历的图标发生变化时,图标变化的信号就会发出来。设置图标也会发出同样的信号。
为了做到这一点,我们将使用QCalendarWidget对象的windowIconChanged方法。
语法: calendar.windowIconChanged.connect(lambda: print("Icon Changed"))
参数: 它不需要参数
执行 的动作: 它将在信号发出的时候打印信息。
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 components
def UiComponents(self):
# creating a QCalendarWidget object
calendar = QCalendarWidget(self)
# setting geometry to the calendar
calendar.setGeometry(10, 10, 400, 250)
# creating a label
label = QLabel(self)
# setting geometry to the label
label.setGeometry(100, 280, 250, 60)
# making label multi line
label.setWordWrap(True)
# text
text = "Icon Changed Signal Emitted"
# getting the icon changed and
# when receives the signal printing the message
calendar.windowIconChanged.connect(lambda: label.setText(text))
# setting icon to the calendar
calendar.setWindowIcon(QIcon('logo.png'))
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app
sys.exit(App.exec())
输出: