pyqt5通过颜色对话框来改变多个部件的背景颜色，代码实现

请参考以下代码实现：

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QPushButton, QFrame, QColorDialog


class Mainwindow(QMainWindow):
    def __init__(self):
        super().__init__()

        # 创建多个部件
        self.button1 = QPushButton('按钮1', self)
        self.button2 = QPushButton('按钮2', self)
        self.frame = QFrame(self)
        self.frame.setStyleSheet('background-color: yellow')

        # 设置部件位置和大小
        self.button1.setGeometry(50, 50, 100, 30)
        self.button2.setGeometry(50, 100, 100, 30)
        self.frame.setGeometry(50, 150, 100, 100)

        # 连接颜色对话框和槽函数
        self.color_picker = QColorDialog(self)
        self.color_picker.colorSelected.connect(self.change_color)

    def change_color(self):
        color = self.color_picker.currentColor().name()
        # 改变多个部件的背景颜色
        self.button1.setStyleSheet(f'background-color:{color}')
        self.button2.setStyleSheet(f'background-color:{color}')
        self.frame.setStyleSheet(f'background-color:{color}')


if __name__ == '__main__':
    app = QApplication(sys.argv)
    window = Mainwindow()
    window.show()
    sys.exit(app.exec_())

运行后，打开颜色对话框，选择颜色即可改变多个部件的背景颜色。