PyQt5 QSpinBox – 断开它的连接

在这篇文章中，我们将看到如何断开旋转盒的连接，断开旋转盒的连接意味着连接到旋转盒的动作将不会发生，它们将被断开。断开连接与将一个动作连接到自旋盒正好相反。

为了做到这一点，我们使用断开连接方法

语法： spin_box.disconnect()

参数： 它不需要参数

返回： 它返回浮点数

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 widgets
    def UiComponents(self):
        # creating spin box
        self.spin = QSpinBox(self)
  
        # setting geometry to spin box
        self.spin.setGeometry(100, 100, 250, 40)
  
        # setting range to the spin box
        self.spin.setRange(0, 999999)
  
        # setting prefix to spin
        self.spin.setPrefix("Prefix ")
  
        # setting suffix to spin
        self.spin.setSuffix(" Suffix")
  
        # adding action to the spin box
        self.spin.valueChanged.connect(self.do_something)
  
        # disconnecting the spin box
        self.spin.disconnect()
  
        # creating label
        self.label = QLabel(self)
  
        # setting geometry to the label
        self.label.setGeometry(100, 200, 200, 70)
  
        # making it multi line label
        self.label.setWordWrap(True)
  
    # action called by spin box 
    def do_something(self):
  
        # setting text to the label
        self.label.setText("Done Something")
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
window.spin.setFocus()
# start the app
sys.exit(App.exec())