PyQt5 – 如何在 QLabel 上添加边框？

当我们在 PyQt5 中创建 Label 时，我们可以看到没有像 Push Buttons 中那样的边框，在本文中我们将看到如何为 Label 添加边框。

为了给标签添加边框，我们将使用label.setStyleSheet()方法，这将给标签添加边框，我们也可以设置边框的粗细和颜色。

Syntax : label.setStyleSheet(“border: 1px solid black;”)

Argument : It takes string as a argument.

Action performed : This will create a border on label with thickness of 1px and color will be black.

下面是Python的实现——

# importing the required libraries
  
from PyQt5.QtWidgets import * 
from PyQt5.QtGui import * 
import sys
  
class Window(QMainWindow):
    def __init__(self):
        super().__init__()
  
        # set the title
        self.setWindowTitle("Label")
  
        # setting  the geometry of window
        self.setGeometry(0, 0, 400, 300)
  
        # creating a label widget
        # by default label will display at top left corner
        self.label_1 = QLabel('It is Label 1', self)
  
        # moving position
        self.label_1.move(100, 100)
  
        # setting up border
        self.label_1.setStyleSheet("border: 1px solid black;")
  
        # creating a label widget
        # by default label will display at top left corner
        self.label_2 = QLabel('It is Label 2', self)
  
        # moving position
        self.label_2.move(100, 200)
  
        # setting up border
        self.label_2.setStyleSheet("border: 3px solid blue;")
  
        # show all the widgets
        self.show()
  
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
# start the app
sys.exit(App.exec())

输出 ：