PyQt5 - 按钮的阻塞信号

在本文中，我们将看到如何阻止按钮的信号，阻止信号意味着停止按钮执行分配的任务。它用于使按钮无效。

为此，我们将使用属于QObject class的blockSignals方法。

Syntax : button.blockSignals(True)

Argument : It takes bool as argument.

Action performed: It blocks the signal of button.

代码 ：

# importing libraries
from PyQt5.QtWidgets import * 
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 widgets
    def UiComponents(self):
  
        # creating a push button
        button = QPushButton("CLICK", self)
  
        # setting geometry of button
        button.setGeometry(200, 150, 100, 30)
  
        # adding action to a button
        button.clicked.connect(self.clickme)
  
        # blocking signals of the button
        button.blockSignals(True)
          
  
    # action method
    def clickme(self):
  
        # printing pressed
        print("pressed")
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：

当这个按钮被点击时，什么都不会发生。