timer
def set_ui(self):
layout=QBoxLayout(QBoxLayout.TopToBottom)
lb=QLabel('Hello World !',self)
self.lcd=QLCDNumber(self)
self.lcd.setDigitCount(20)
self.lcd.setMode(QLCDNumber.Dec)
self.lcd.setStyleSheet('background-color:green;border:1px solid black;')
layout.addWidget(lb)
layout.addWidget(self.lcd)
time=QTimer(self)
time.setInterval(1000)
time.timeout.connect(self.refresh)
time.start()
self.setLayout(layout)
def refresh(self):
startDate = QDateTime.currentMSecsSinceEpoch()
endDate=QDateTime(QDate(2021,2,4),QTime(0,0,0)).toMSecsSinceEpoch()
interval=endDate-startDate
if interval>0:
days=interval//(24*60*60*1000)
hour=(interval-days*24*60*60*1000)//(60*60*1000)
min = (interval - days * 24 * 60 * 60 * 1000 - hour * 60 * 60 * 1000) // (60 * 1000)
sec = (interval - days * 24 * 60 * 60 * 1000 - hour * 60 * 60 * 1000 - min * 60 * 1000) // 1000
intervals = str(days) + ':' + str(hour) + ':' + str(min) + ':' + str(sec)
self.lcd.display(intervals)
stackWidget
def tab1UI(self):
widget1=QWidget()
widget2=QWidget()
widget3=QWidget()
widget1.setStyleSheet('background-color:red;')
widget2.setStyleSheet('background-color:yellow;')
widget3.setStyleSheet('background-color:green;')
stackwidget=QStackedWidget()
stackwidget.addWidget(widget1)
stackwidget.addWidget(widget2)
stackwidget.addWidget(widget3)
layout=QVBoxLayout()
layout.addWidget(stackwidget)
self.setLayout(layout)
pageComboBox=QComboBox(self)
pageComboBox.addItems(['page 1','page 2','page 3'])
pageComboBox.activated[int].connect(stackwidget.setCurrentIndex)
