PyQt5 标签 - 访问阴影的垂直偏移

在本文中，我们将看到如何访问阴影到标签的垂直偏移量，偏移量基本上是标签阴影与标签之间的距离，默认偏移值为 8，尽管我们可以随时更改它。

In order to do this we use yOffset method

Syntax : shadow.yOffset()
Here shadow is the QGraphicsDropShadowEffect object

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 background color of window
        # self.setStyleSheet("background-color : black;")
  
        # 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
        shadow = QGraphicsDropShadowEffect()
  
        # setting blur radius
        shadow.setBlurRadius(20)
  
        # setting Yoffset
        shadow.setYOffset(100)
  
        # adding shadow to the label
        label.setGraphicsEffect(shadow)
  
        # creating label
        result = QLabel(self)
  
        # setting geometry
        result.setGeometry(100, 200, 350, 30)
  
        # getting shadow Y-offset
        Yoffset = shadow.yOffset()
  
        # showing text through label
        result.setText("Y-Offset : " + str(Yoffset))
  
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：