# -*- coding: utf- -*-

from PyQt5.QtWidgets import QApplication, QPushButton, QColorDialog , QWidget

from PyQt5.QtCore import Qt

from PyQt5.QtGui import QColor

import sys 

class ColorDialog ( QWidget):

    def __init__(self ):

        super().__init__()

        #颜色值

        color = QColor(, , )

        #位置

        self.setGeometry(, , , )

        #标题

        self.setWindowTitle('颜色选择')

        #按钮名称

        self.button = QPushButton('Dialog', self)

        self.button.setFocusPolicy(Qt.NoFocus)

        #按钮位置

        self.button.move(, )

        #按钮绑定方法

        self.button.clicked.connect(self.showDialog)

        self.setFocus()

        self.widget = QWidget(self)

        self.widget.setStyleSheet('QWidget{background-color:%s} '%color.name())

        self.widget.setGeometry(, , , ) 

    def showDialog(self):

        col = QColorDialog.getColor()

        print(col.name(),"\n")

        if col.isValid():

            self.widget.setStyleSheet('QWidget {background-color:%s}'%col.name()) 

if __name__ == "__main__":

    app = QApplication(sys.argv)

    qb = ColorDialog()

    qb.show()

    sys.exit(app.exec_())