PyQt5 Label - 添加颜色效果

在本文中，我们将看到如何为标签添加颜色效果默认情况下标签没有颜色效果，尽管我们可以为标签创建颜色效果。颜色效果不像背景颜色，它更像是我们在图片上使用的彩色滤镜，下面是带有颜色效果的标签的表现形式

In order to do this we have to do the following –

1. Create a label
2. Set geometry to the label
3. Create a QGraphicsColorizeEffect object
4. Add this object to the label with the help of setGraphicsEffect method

句法 ：

# creating a color effect
color_effect = QGraphicsColorizeEffect()

# adding color effect to the label
label.setGraphicsEffect(color_effect)

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__()
  
        # maing background color cyan
        self.setStyleSheet("background : cyan;")
  
        # 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 geometry to the label
        label.setGeometry(200, 100, 150, 60)
  
        # setting alignment to the label
        label.setAlignment(Qt.AlignCenter)
  
        # creating a color effect
        color_effect = QGraphicsColorizeEffect()
  
        # adding color effect to the label
        label.setGraphicsEffect(color_effect)
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：