PyQt5 QCommandLinkButton – 释放信号

在本文中，我们将了解如何获取 QCommandLinkButton 的释放信号。释放按钮时发出此信号。点击按钮有两个阶段，第一个是按下状态，第二个是释放状态。

为了做到这一点，我们使用带有命令链接按钮对象的released方法

Syntax : button.released.connect(method)

Argument : It takes method as argument

Action Performed : It calls the method when the clicked signal is emitted

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, 200, 50)
  
        # creating label
        label = QLabel("GeeksforGeeks", self)
  
        # setting label geometry
        label.setGeometry(100, 100, 200, 40)
  
        # released signal
        # set text to the label
        cl_button.pressed.connect(lambda: label.setText("Released 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 ：