PyQt5 QDoubleSpinBox – 获取编辑完成的信号

在本文中，我们将了解如何获得 QDoubleSpinBox 的编辑完成信号。编辑完成时发出此信号。当双旋转框失去焦点并且按下回车键时，就会发生这种情况。这是非常有用的信号，因为它是在用户确认旋转框中的值时发出的。

为此，我们将使用带有 QDateTimeEdit 对象的editingFinished方法。

Syntax : dd_spin.editingFinished.connect(method)

Argument : It takes method as argument

Return : It returns 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 double spin box
        d_spin = QDoubleSpinBox(self)
  
        # setting geometry to the double spin box
        d_spin.setGeometry(100, 100, 150, 40)
          
        # step type
        step_type = QAbstractSpinBox.AdaptiveDecimalStepType
  
        # adaptive step type
        d_spin.setStepType(step_type)
  
        # creating a label
        label = QLabel("GeeksforGeeks", self)
  
        # setting geometry to the label
        label.setGeometry(100, 200, 300, 80)
  
        # making label multi line
        label.setWordWrap(True)
  
        # getting editing finished  signal of double spin box
        d_spin.editingFinished.connect(lambda: spin_method())
  
        def spin_method():
  
            # setting text to the label
            label.setText("Editing Finished 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 ：