PyQt5 QCommandLinkButton – 切换可检查按钮

在本文中，我们将了解如何切换 QCommandLinkButton。切换是指改变命令链接按钮的状态，当它被切换时，会发出切换信号。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。

为了做到这一点，我们使用带有命令链接按钮对象的toggle方法

Syntax : button.toggle()

Argument : It takes no argument

Return : It return 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 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"))
  
        # toggle the button
        cl_button.toggle()
        cl_button.toggle()
        cl_button.toggle()
  
  
  
  
  
# 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