PyQt5 QSpinBox - 通过位置找到孩子

在本文中，我们将看到如何在旋转框内的给定位置获取旋转框的子级，子级基本上是旋转框的组件，例如，旋转框的主子级是它的 QLineEdit，用于查看值并设置值。

为了做到这一点，我们使用childAt方法。

Syntax : spin_box.childAt(x, y)

Argument : It takes position as argument it can be x, y co-ordinates or the QPoint object

Return : It returns child at given position if there is no child it return None

注意：坐标不是窗口坐标系，而是旋转框坐标系

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, 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, 200, 200, 70)
  
        # getting the child at the point 10, 10
        child = self.spin.childAt(10, 10)
  
        # setting text to the label
        self.label.setText(str(child))
  
        # making label multi line
        self.label.setWordWrap(True)
  
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：