PyQt5 QCommandLinkButton – 切换信号

在本文中，我们将了解如何获得 QCommandLinkButton 的切换信号。每当可检查的命令链接按钮更改其状态时，都会发出此信号。默认情况下它是不可检查的，尽管我们可以随时借助 setCheckable 方法使其可检查。此外，当它是可检查的时，它的状态是未检查的，尽管我们可以在 setChecked 方法的帮助下以编程方式检查其状态。
为了做到这一点，我们使用带有命令链接按钮对象的切换方法

Syntax : button.toggled.connect(method)
Argument : It takes method as argument
Action Performed : It calls the method when the clicked signal is emitted

编程需要懂一点英语

下面是实现

Python3

# 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 command link button
        cl_button = QCommandLinkButton("Press", self)
 
        # setting geometry
        cl_button.setGeometry(250, 100, 150, 50)
 
        # making it checkable
        cl_button.setCheckable(True)
 
        # toggle signal
        # printing message
        cl_button.toggled.connect(lambda: print("Toggled Signal Emitted"))
 
        # making its state checked
        cl_button.setChecked(True)
 
         
 
 
 
 
# create pyqt5 app
App = QApplication(sys.argv)
 
# create the instance of our Window
window = Window()
 
# start the app
sys.exit(App.exec())

输出：

Toggled Signal Emitted
Toggled Signal Emitted
Toggled Signal Emitted
Toggled Signal Emitted
Toggled Signal Emitted