PyQt5 QDoubleSpinBox – 获取当前值

在本文中，我们将了解如何获取 QDoubleSpinBox 的当前值。用户可以通过鼠标和键盘为 QDoubleSpinBox 设置任何十进制值（浮点数），但有时需要以编程方式设置值以覆盖用户输入的值，可以借助setValue设置方法。

为此，我们将对 QDateTimeEdit 对象使用value方法。

Syntax : d_spin.value()

Argument : It takes no argument

Return : It returns float value

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)
  
        # value
        value = 9.99
  
        # setting current value of the double spin box
        d_spin.setValue(value)
  
        # 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 current value of double spin box
        value = d_spin.value()
  
        # setting text to the label
        label.setText("Current Value : " + str(value))
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：