PyQt5 QSpinBox - 编辑完成的信号

在本文中，我们将看到如何使用旋转框的编辑完成信号，编辑完成是按下回车时旋转框产生的信号。我们知道我们可以在其值更改时向微调框添加操作，但每次更改值时都不需要调用方法，有时仅在设置值并按下 Enter 时才调用方法，即编辑完成微调框。

为了做到这一点，我们使用editingFinished.connec 方法。

Syntax : spin_box.editingFinished.connect(method_name)

Argument : It takes method name as argument as argument

Action Performed : It calls the passed method every time editing is finished

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, 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 prefix to spin
        self.spin.setPrefix("Prefix ")
  
        # setting suffix to spin
        self.spin.setSuffix(" Suffix")
  
        # creating a label
        self.label = QLabel("Label ", self)
  
        # setting geometry to the label
        self.label.setGeometry(100, 150, 300, 70)
  
        # adding action when editing get finished
        self.spin.editingFinished.connect(self.do_action)
  
    # method called after editing finished
    def do_action(self):
  
        # getting current value of spin box
        current = self.spin.value()
  
        self.label.setText("Editing finished, final value : " + str(current))
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：