PyQt5 标签 - 根据用户使阴影消失

在本文中，我们将看到如何根据用户使标签的阴影消失。当用户选中单选按钮时，阴影将显示和消失，当单选按钮未选中时，阴影将出现。

In order to do this we use setEnabled method

Syntax : shadow.setEnabled(bool)

Argument : It takes bool as argument

Return : 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, 600, 400)
  
        # calling method
        self.UiComponents()
  
        # showing all the widgets
        self.show()
  
    # method for widgets
    def UiComponents(self):
  
        # creating label
        label = QLabel("Label", self)
  
        # setting alignment
        label.setAlignment(Qt.AlignCenter)
  
        # setting geometry to the label
        label.setGeometry(200, 100, 150, 60)
  
        # setting border
        label.setStyleSheet("border : 8px solid black")
  
        # creating a QGraphicsDropShadowEffect object
        self.shadow = QGraphicsDropShadowEffect()
  
        # setting blur radius
        self.shadow.setBlurRadius(30)
  
        # setting Xoffset
        self.shadow.setOffset(10)
  
        # adding shadow to the label
        label.setGraphicsEffect(self.shadow)
  
        # creating radio button
        self.button = QRadioButton("Hide Shadow", self)
  
        # setting geometry to the radio button
        self.button.setGeometry(200, 200, 100, 40)
  
        # adding action to the button
        self.button.clicked.connect(self.hide_shadow)
  
    def hide_shadow(self):
  
        if self.button.isChecked():
  
            # making shadow off
            self.shadow.setEnabled(False)
  
        else:
            # making shadow off
            self.shadow.setEnabled(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 ：