PyQt5 – 如何改变标签的颜色？

在 PyQt5 中创建 Label 时，我们可以看到没有背景颜色。在本文中，我们将了解如何为标签添加背景颜色。

为了给标签添加边框，我们将使用label.setStyleSheet()方法，这将为标签添加背景颜色，就像设计 CSS 样式表一样。

Syntax : label.setStyleSheet(“background-color: cyan”)

Argument : It takes string as argument.

Action performed: It changes the background color of the label.

代码 ：

# 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('Light green', self)
  
        # moving position
        self.label_1.move(100, 100)
  
        # setting up background color
        self.label_1.setStyleSheet("background-color: lightgreen")
  
        # creating a label widget
        # by default label will display at top left corner
        self.label_2 = QLabel('Yellow', self)
          
        # moving position
        self.label_2.move(100, 150)
  
        # setting up background color and border
        self.label_2.setStyleSheet("background-color: yellow; 
                                    border: 1px solid black;")
  
        # 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 ：