PyQt5 QColorDialog – 为其子QWidget设置背景色

在这篇文章中，我们将看到如何为QColorDialog的QWidget（即其子QWidget）设置背景色。QColorDialog是PyQt5中用于选择和创建颜色的弹出式窗口部件。颜色对话框是一个巨大的部件，由许多子部件组成，所以给颜色对话框设置样式表变得很困难，因为它是一个复杂的部件，下面是QColorDialog部件的QWidget的背景颜色是怎样的：

为了做到这一点，我们必须在setStyleSheet方法的帮助下为QColorDialog对象设置样式表，下面是样式表代码

QColorDialog QWidget
{
background-color : lightgreen;
}

以下是实施

# 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 QWidget
        # adding background color
        dialog.setStyleSheet("QColorDialog QWidget"
                             "{"
                             "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())