本文基于PyQt5 按钮Buttons样式设计，针对按钮添加响应的点击事件触发。

效果截图:

PyQt 模型设计：

 PyQt 设计器截图：

*.UI 源码

   MainWindow              0     0     800     600              MainWindow                            20       30       478       80                                                        0          48                                  PushButton                                                             0          48                                  PushButton                                                             0          48                                  PushButton                                                             0          48                                  PushButton                                                             0          48                                  PushButton                                                    20       110       478       80                                                            pushButton    clicked()    plainTextEdit    zoomIn()               362      39                258      149                   pushButton_2    clicked()    plainTextEdit    zoomIn()               355      69                258      149                   pushButton_3    clicked()    plainTextEdit    zoomIn()               258      69                258      149                   pushButton_4    clicked()    plainTextEdit    zoomIn()               162      69                258      149                   pushButton_5    clicked()    plainTextEdit    zoomIn()               65      69                258      149                

*.UI 源码 转换为*.py

# -*- coding: utf-8 -*-  # Form implementation generated from reading ui file 'untitled2.ui' # # Created by: PyQt5 UI code generator 5.15.4 # # WARNING: Any manual changes made to this file will be lost when pyuic5 is # run again.  Do not edit this file unless you know what you are doing. import sys  from PyQt5 import QtCore, QtGui, QtWidgets from PyQt5.QtWidgets import QApplication, QMainWindow  StyleSheet = """ /*这里是通用设置，所有按钮都有效，不过后面的可以覆盖这个*/ QPushButton {     border: none; /*去掉边框*/ } /* QPushButton#xxx 或者 #xx 都表示通过设置的objectName来指定 */ QPushButton#pushButton {     background-color: #f44336; /*背景颜色*/ } #pushButton:hover {     background-color: #e57373; /*鼠标悬停时背景颜色*/ } /*注意pressed一定要放在hover的后面，否则没有效果*/ #pushButton:pressed {     background-color: #ffcdd2; /*鼠标按下不放时背景颜色*/ } #pushButton_2 {     background-color: #4caf50;     border-radius: 5px; /*圆角*/ } #pushButton_2:hover {     background-color: #81c784; } #pushButton_2:pressed {     background-color: #c8e6c9; } #pushButton_3 {     background-color: #2196f3;     /*限制最小最大尺寸*/     min-width: 96px;     max-width: 96px;     min-height: 96px;     max-height: 96px;     border-radius: 48px; /*圆形*/ } #pushButton_3:hover {     background-color: #64b5f6; } #pushButton_3:pressed {     background-color: #bbdefb; } #pushButton_4 {     max-height: 48px;     border-top-right-radius: 20px; /*右上角圆角*/     border-bottom-left-radius: 20px; /*左下角圆角*/     background-color: #ff9800; } #pushButton_4:hover {     background-color: #ffb74d; } #pushButton_4:pressed {     background-color: #ffe0b2; } /*根据文字内容来区分按钮,同理还可以根据其它属性来区分*/ #pushButton_5 {     color: white; /*文字颜色*/     background-color: #9c27b0; } """   class Ui_MainWindow(object):     def setupUi(self, MainWindow):         MainWindow.setObjectName("MainWindow")         MainWindow.resize(800, 600)         self.centralwidget = QtWidgets.QWidget(MainWindow)         self.centralwidget.setObjectName("centralwidget")         self.horizontalLayoutWidget = QtWidgets.QWidget(self.centralwidget)         self.horizontalLayoutWidget.setGeometry(QtCore.QRect(20, 30, 478, 80))         self.horizontalLayoutWidget.setObjectName("horizontalLayoutWidget")         self.horizontalLayout = QtWidgets.QHBoxLayout(self.horizontalLayoutWidget)         self.horizontalLayout.setContentsMargins(0, 0, 0, 0)         self.horizontalLayout.setObjectName("horizontalLayout")         self.pushButton_5 = QtWidgets.QPushButton(self.horizontalLayoutWidget)         self.pushButton_5.setMinimumSize(QtCore.QSize(0, 48))         self.pushButton_5.setObjectName("pushButton_5")         self.horizontalLayout.addWidget(self.pushButton_5)         self.pushButton_4 = QtWidgets.QPushButton(self.horizontalLayoutWidget)         self.pushButton_4.setMinimumSize(QtCore.QSize(0, 48))         self.pushButton_4.setObjectName("pushButton_4")         self.horizontalLayout.addWidget(self.pushButton_4)         self.pushButton_3 = QtWidgets.QPushButton(self.horizontalLayoutWidget)         self.pushButton_3.setMinimumSize(QtCore.QSize(0, 48))         self.pushButton_3.setObjectName("pushButton_3")         self.horizontalLayout.addWidget(self.pushButton_3)         self.pushButton_2 = QtWidgets.QPushButton(self.horizontalLayoutWidget)         self.pushButton_2.setMinimumSize(QtCore.QSize(0, 48))         self.pushButton_2.setObjectName("pushButton_2")         self.horizontalLayout.addWidget(self.pushButton_2)         self.pushButton = QtWidgets.QPushButton(self.horizontalLayoutWidget)         self.pushButton.setMinimumSize(QtCore.QSize(0, 48))         self.pushButton.setObjectName("pushButton")         self.horizontalLayout.addWidget(self.pushButton)         self.horizontalLayoutWidget_2 = QtWidgets.QWidget(self.centralwidget)         self.horizontalLayoutWidget_2.setGeometry(QtCore.QRect(20, 110, 478, 80))         self.horizontalLayoutWidget_2.setObjectName("horizontalLayoutWidget_2")         self.horizontalLayout_2 = QtWidgets.QHBoxLayout(self.horizontalLayoutWidget_2)         self.horizontalLayout_2.setContentsMargins(0, 0, 0, 0)         self.horizontalLayout_2.setObjectName("horizontalLayout_2")         self.plainTextEdit = QtWidgets.QPlainTextEdit(self.horizontalLayoutWidget_2)         self.plainTextEdit.setObjectName("plainTextEdit")         self.horizontalLayout_2.addWidget(self.plainTextEdit)         MainWindow.setCentralWidget(self.centralwidget)          self.retranslateUi(MainWindow)         # Qt Designer 设计器自动生成相关事件代码(信号/槽)         # self.pushButton.clicked.connect(self.plainTextEdit.zoomIn)         # self.pushButton_2.clicked.connect(self.plainTextEdit.zoomIn)         # self.pushButton_3.clicked.connect(self.plainTextEdit.zoomIn)         # self.pushButton_4.clicked.connect(self.plainTextEdit.zoomIn)         # self.pushButton_5.clicked.connect(self.plainTextEdit.zoomIn)         # 自定义函数进行相关(信号/槽)事件绑定         self.pushButton.clicked.connect(self.onClicked)         self.pushButton_2.clicked.connect(self.onPressed)         self.pushButton_3.clicked.connect(self.onReleased)         self.pushButton_4.clicked.connect(self.onToggled)         self.pushButton_5.clicked.connect(self.onToggled)         QtCore.QMetaObject.connectSlotsByName(MainWindow)      def retranslateUi(self, MainWindow):         _translate = QtCore.QCoreApplication.translate         MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))         self.pushButton_5.setText(_translate("MainWindow", "PushButton"))         self.pushButton_4.setText(_translate("MainWindow", "PushButton"))         self.pushButton_3.setText(_translate("MainWindow", "PushButton"))         self.pushButton_2.setText(_translate("MainWindow", "PushButton"))         self.pushButton.setText(_translate("MainWindow", "PushButton"))      # 自定义按钮点击触发事件     def onClicked(self):         self.plainTextEdit.appendPlainText(             '按钮{0}被点击'.format(self.pushButton.objectName()))      def onPressed(self):         self.plainTextEdit.appendPlainText(             '按钮{0}被按下'.format(self.pushButton_2.objectName()))      def onReleased(self):         self.plainTextEdit.appendPlainText(             '按钮{0}被释放'.format(self.pushButton_3.objectName()))      def onToggled(self, checked):         self.plainTextEdit.appendPlainText(             '按钮{0}被选中：{1}'.format(self.pushButton_4.objectName(), checked))   if __name__ == '__main__':     app = QApplication(sys.argv)     app.setStyleSheet(StyleSheet)     MainWindow = QMainWindow()     ui = Ui_MainWindow()     ui.setupUi(MainWindow)     MainWindow.show()     sys.exit(app.exec_()) 

 重点:

1、通过组件的ObjectName + 应用app的setStyleSheet(StyleSheet) 实现自定义样式绑定

2、通过组件的Clicked.connect() 绑定自定义函数。

        # 自定义函数进行相关(信号/槽)事件绑定
        self.pushButton.clicked.connect(self.onClicked)  # pushButton 绑定onClicked 函数
        self.pushButton_2.clicked.connect(self.onPressed)# pushButton_2绑定onPressed函数
        self.pushButton_3.clicked.connect(self.onReleased)# pushButton_3绑定onReleased函数
        self.pushButton_4.clicked.connect(self.onToggled)# pushButton_4绑定onToggled函数
        self.pushButton_5.clicked.connect(self.onToggled)# pushButton_5 绑定onToggled函数