QAbstracButton, menu bar, etc.

##QAbstracButton

from PyQt5.Qt import *
import sys
class Btn(QAbstractButton):
    def paintEvent(self, QPaintEvent):
        # print("绘制按钮")
        '''创建一个画家'''
        painter=QPainter(self)
        '''给画家一个画笔'''
        '''创建一个画笔'''
        pen=QPen(QColor(111,200,50),10)
        '''设置这个笔'''
        painter.setPen(pen)
        '''画家画'''
        painter.drawText(20,20,"社会我顺哥，人狠话不多")
        painter.drawEllipse(0,0,100,100)
class Window(QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle('QAbstracButton的学习')
        self.resize(500, 500)
        self.setup_ui()

    def setup_ui(self):
        btn=Btn(self)
        btn.setText("测试")
        btn.resize(100,100)
        btn.pressed.connect(lambda :print("点击了这个按钮"))


        pass

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

from PyQt5.Qt import *
import sys

class Window(QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle('QAbstracButton的学习')
        self.resize(500, 500)
        self.setup_ui()

    def setup_ui(self):
        btn=QPushButton(self)
        btn.setText("测试")
        btn.resize(100,100)
        btn.setIcon(QIcon("code.png"))
        btn.pressed.connect(lambda :print("点击了这个按钮"))

        '''菜单的设置'''
        menu=QMenu(self)
        '''子菜单最近打开'''
        open_recent_menu = QMenu(self)
        open_recent_menu.setTitle("最近打开")
        '''子菜单的设置'''

        # new_ation=QAction(self)
        # new_ation.setText("新建")
        # new_ation.setIcon(QIcon("code.png"))
        new_ation = QAction(QIcon("code.png"),"新建",self)
        new_ation.triggered.connect(lambda :print("新建文件"))

        open_ation = QAction(QIcon("code.png"), "打开", self)
        open_ation.triggered.connect(lambda: print("打开文件"))

        exit_ation = QAction(QIcon("code.png"), "退出", self)
        exit_ation.triggered.connect(lambda: print("退出程序"))

        file_action=QAction("Python-GUI编程-PyQt5",self)
        '''添加菜单'''
        menu.addAction(new_ation)
        menu.addAction(open_ation)
        menu.addMenu(open_recent_menu)
        open_recent_menu.addAction(file_action)
        #分割线
        menu.addSeparator()
        menu.addAction(exit_ation)


        btn.setMenu(menu)
        btn2=QPushButton(self)
        btn2.setText("btn2")
        btn2.move(200,200)
        btn2.setAutoDefault(True)
        print(btn.autoDefault())
        print(btn2.autoDefault())
        btn2.setDefault(True)
        pass

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

from PyQt5.Qt import *
import sys

class Window(QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle('QAbstracButton的学习')
        self.resize(500, 500)
        self.setup_ui()

    def contextMenuEvent(self, evt):
        print("默认上下文菜单调用这个方法")
        '''菜单的设置'''
        menu=QMenu(self)
        '''子菜单最近打开'''
        open_recent_menu = QMenu(self)
        open_recent_menu.setTitle("最近打开")
        '''子菜单的设置'''

        # new_ation=QAction(self)
        # new_ation.setText("新建")
        # new_ation.setIcon(QIcon("code.png"))
        new_ation = QAction(QIcon("code.png"),"新建",self)
        new_ation.triggered.connect(lambda :print("新建文件"))

        open_ation = QAction(QIcon("code.png"), "打开", self)
        open_ation.triggered.connect(lambda: print("打开文件"))

        exit_ation = QAction(QIcon("code.png"), "退出", self)
        exit_ation.triggered.connect(lambda: print("退出程序"))

        file_action=QAction("Python-GUI编程-PyQt5",self)
        '''添加菜单'''
        menu.addAction(new_ation)
        menu.addAction(open_ation)
        menu.addMenu(open_recent_menu)
        open_recent_menu.addAction(file_action)
        #分割线
        menu.addSeparator()
        menu.addAction(exit_ation)
        menu.exec_(evt.pos())

    def setup_ui(self):
        btn=QPushButton(self)
        btn.setText("测试")
        btn.resize(100,100)
        btn.setIcon(QIcon("code.png"))
        btn.pressed.connect(lambda :print("点击了这个按钮"))

        '''菜单的设置'''
        menu=QMenu(self)
        '''子菜单最近打开'''
        open_recent_menu = QMenu(self)
        open_recent_menu.setTitle("最近打开")
        '''子菜单的设置'''

        # new_ation=QAction(self)
        # new_ation.setText("新建")
        # new_ation.setIcon(QIcon("code.png"))
        new_ation = QAction(QIcon("code.png"),"新建",self)
        new_ation.triggered.connect(lambda :print("新建文件"))

        open_ation = QAction(QIcon("code.png"), "打开", self)
        open_ation.triggered.connect(lambda: print("打开文件"))

        exit_ation = QAction(QIcon("code.png"), "退出", self)
        exit_ation.triggered.connect(lambda: print("退出程序"))

        file_action=QAction("Python-GUI编程-PyQt5",self)
        '''添加菜单'''
        menu.addAction(new_ation)
        menu.addAction(open_ation)
        menu.addMenu(open_recent_menu)
        open_recent_menu.addAction(file_action)
        #分割线
        menu.addSeparator()
        menu.addAction(exit_ation)


        btn.setMenu(menu)
        btn2=QPushButton(self)
        btn2.setText("btn2")
        btn2.move(200,200)
        btn2.setAutoDefault(True)
        print(btn.autoDefault())
        print(btn2.autoDefault())
        btn2.setDefault(True)
        pass

if __name__ == '__main__':
    app = QApplication(sys.argv)
    window = Window()
    def show_monu(point):
        print("自定义上下文菜单",point)
        print("默认上下文菜单调用这个方法")
        '''菜单的设置'''
        self=window
        menu = QMenu(self)
        '''子菜单最近打开'''
        open_recent_menu = QMenu(self)
        open_recent_menu.setTitle("最近打开")
        '''子菜单的设置'''

        # new_ation=QAction(self)
        # new_ation.setText("新建")
        # new_ation.setIcon(QIcon("code.png"))
        new_ation = QAction(QIcon("code.png"), "新建", self)
        new_ation.triggered.connect(lambda: print("新建文件"))

        open_ation = QAction(QIcon("code.png"), "打开", self)
        open_ation.triggered.connect(lambda: print("打开文件"))

        exit_ation = QAction(QIcon("code.png"), "退出", self)
        exit_ation.triggered.connect(lambda: print("退出程序"))

        file_action = QAction("Python-GUI编程-PyQt5", self)
        '''添加菜单'''
        menu.addAction(new_ation)
        menu.addAction(open_ation)
        menu.addMenu(open_recent_menu)
        open_recent_menu.addAction(file_action)
        # 分割线
        menu.addSeparator()
        menu.addAction(exit_ation)

        dest_point=window.mapToGlobal(point)
        menu.exec_(dest_point)


    window.setContextMenuPolicy(Qt.CustomContextMenu)
    window.customContextMenuRequested.connect(show_monu)
    window.show()
    sys.exit(app.exec_())