[QGIS3] QCalendarWidget

# -*- coding:utf-8 -*-
import sys
from PyQt5 import QtCore
from PyQt5.QtWidgets import QCalendarWidget, QLabel, QDialog


class CalendarDialog(QDialog):

   def __init__(self, _parent):
      super(CalendarDialog, self).__init__(_parent)
      self.setModal(True)
      self.cal = QCalendarWidget(self)
      self.initUI()
      self.adjustSize()
      self.setFixedSize(self.width(), self.height())
      self.selectedDate = None
   def initUI(self):
      self.cal.setGridVisible(True)
      self.cal.move(20, 20)
      self.cal.clicked[QtCore.QDate].connect(self.showDate)

      self.lbl = QLabel(self)
      date = self.cal.selectedDate()
      self.lbl.setText(date.toString())
      self.lbl.move(20, 200)

      self.setWindowTitle('Calendar')
      self.show()

   def showDate(self, date):
      self.lbl.setText(date.toString())
      self.close()


def main():
   app = QApplication(sys.argv)
   ex = Example()
   sys.exit(app.exec_())


if __name__ == '__main__':
   main()

[PyQt5] QWidgetAction sample

# -*- coding: utf-8 -*-
import sys

from PyQt5.QtWidgets import QMainWindow, QApplication, QWidgetAction, QMenu


class Example(QMainWindow):

   def __init__(self):
      super().__init__()

      self.toolbar = self.addToolBar('Toolbar')
      self.widgetAction = QWidgetAction(self.toolbar)
      self.menu = QMenu(self.toolbar)

      self.action1 = self.menu.addAction('action1')
      self.action2 = self.menu.addAction('action2')

      self.widgetAction.setText('demo')
      self.widgetAction.setMenu(self.menu)
      self.toolbar.addAction(self.widgetAction)

      self.action1.triggered.connect(self.onAction1)
      self.action2.triggered.connect(self.onAction2)

      self.widgetAction.triggered.connect(self.triggered)

      self.setGeometry(300, 300, 300, 200)
      self.setWindowTitle('Toolbar')

   def triggered(self, e):
      if self.widgetAction.text() == 'onAction1':
         self.action1.trigger()
      elif self.widgetAction.text() == 'onAction2':
         self.action2.trigger()

   def onAction1(self):
      print('onAction1')
      self.widgetAction.setText('onAction1')

   def onAction2(self):
      print('onAction2')
      self.widgetAction.setText('onAction2')


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