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[qt5] progress bar - written with camelCase
import sys
from PyQt5.QtWidgets import (QWidget, QProgressBar,
QPushButton, QApplication)
from PyQt5.QtCore import QBasicTimer
class Example(QWidget):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
self.progress_bar = QProgressBar(self)
self.progress_bar.setGeometry(30, 40, 200, 25)
self.btn = QPushButton('Start', self)
self.btn.move(30, 80)
self.btn.clicked.connect(self.doAction)
self.timer = QBasicTimer()
self.step = 0
self.setGeometry(300, 300, 280, 170)
self.setWindowTitle('QProgressBar')
self.show()
def timerEvent(self, QTimerEvent):
if self.step >= 100:
self.timer.stop()
self.btn.setText('Finished')
return
self.step += 1
self.progress_bar.setValue(self.step)
def doAction(self):
if self.timer.isActive():
self.timer.stop()
self.btn.setText('Start')
else:
self.timer.start(100, self)
self.btn.setText('Stop')
if __name__ == "__main__":
app = QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())
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