PyQt5 QColorDialog – 为子标签设置背景颜色

在本文中，我们将看到如何为 QColorDialog 的标签（即它的子标签）设置背景颜色。 QColorDialog 是 PyQt5 中用于选择和创建颜色的弹出式小部件。颜色对话框是一个巨大的小部件，由许多子小部件组成，因此很难将样式表设置为颜色对话框，因为它是一个复杂的小部件，下面是 QColorDialog 小部件标签的背景颜色的样子

为此，我们必须借助setStyleSheet方法将样式表设置为 QColorDialog 对象，下面是样式表代码

QColorDialog QLabel
{
background-color : lightgreen;
}

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, 500, 400)
  
        # calling method
        self.UiComponents()
  
        # showing all the widgets
        self.show()
  
  
    # method for components
    def UiComponents(self):
  
        # creating a QColorDialog object
        dialog = QColorDialog(self)
  
        # setting custom colors
        dialog.setCustomColor(1, Qt.red)
        dialog.setCustomColor(2, Qt.green)
        dialog.setCustomColor(3, Qt.yellow)
        dialog.setCustomColor(4, Qt.blue)
  
        # creating label
        label = QLabel("Geeks for Geeks", self)
  
        label.setAlignment(Qt.AlignCenter)
  
        # making label multi line
        label.setWordWrap(True)
  
        # setting stylesheet of the label
        label.setStyleSheet("QLabel"
                            "{"
                            "border : 5px solid black;"
                            "}")
  
  
        # getting the custom color
        color = dialog.customColor(4)
  
        # setting graphic effect to the label
        graphic = QGraphicsColorizeEffect(self)
  
        # setting color to the graphic
        graphic.setColor(color)
  
        # setting graphic to the label
        label.setGraphicsEffect(graphic)
  
        # adding label to the color dialog
        layout = dialog.layout()
        layout.addWidget(label)
        dialog.setLayout(layout)
  
        # setting style sheet to the color dialog's label
        # adding background color
        dialog.setStyleSheet("QColorDialog QLabel"
                             "{"
                             "background-color : lightgreen;"
                             "}")
  
        print(dialog.children())
  
        # executing the color dialog
        dialog.exec_()
  
        # deleting the main window
        self.deleteLater()
  
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：