PyQt5 QSpinBox – 如何获得父类
在这篇文章中,我们将看到如何获得旋转盒子的父级。每个小组件都有一些父对象,例如旋转盒的子对象是行编辑,而行编辑的父对象是旋转盒本身。
为了做到这一点,我们使用旋风盒子对象的parent方法。
语法: spin_box.parent()
参数: 它不需要参数
返回: 它返回父对象
以下是实现方法
# 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 range to the spin box
self.spin.setRange(1, 999999)
# setting prefix to spin
self.spin.setPrefix("PREFIX ")
# setting suffix to spin
self.spin.setSuffix(" SUFFIX")
# creating a label
label = QLabel(self)
# making the label multi line
label.setWordWrap(True)
# setting geometry to the label
label.setGeometry(100, 200, 200, 60)
# getting parent
value = self.spin.parent()
# setting text to the label
label.setText("Parent : " + 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: