python 笔记8

定时器

from PyQt5.Qt import *
import sys
class obj(QObject):
    def timerEvent(self, a0: 'QTimerEvent') -> None:
        print(QTimerEvent,2)


if __name__=='__main__':
    app=QApplication(sys.argv)
    win = QWidget()
    l1 = QLabel(win)
    l1.move(100,200)
    obj1 =obj()
    time_id = obj1.startTimer(1000)
    l1.setText(str(time_id))
    obj1.killTimer(time_id)   #终止定时器
    win.show()
    sys.exit(app.exec_())