PyQt5 QDoubleSpinBox – 获取它的行编辑

在本文中，我们将了解如何获得 QDoubleSpinBox 的行编辑。行编辑是接收输入并显示双旋转框当前值的空白区域，我们可以借助setLineEdit方法随时更改行编辑对象。行编辑是双旋转框的主要组成部分，默认行编辑只接收浮点值。

In order to do this we will use lineEdit method with the double spin box object.

Syntax : dd_spin.lineEdit()

Argument : It takes no argument

Return : It returns QLineEdit object

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)
  
        # setting decimal precision
        d_spin.setDecimals(1)
  
        # 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 line edit
        value = d_spin.lineEdit()
  
        # setting text to the label
        label.setText("Line Edit : " + 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 ：