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import sys
from PyQt4 import QtGui, QtCore
class Example(QtGui.QWidget):
def __init__(self):
super(Example, self).__init__()
self.initUI()
def initUI(self):
self.pbar = QtGui.QProgressBar(self)
self.pbar.setGeometry(30, 40, 200, 25)
self.btn = QtGui.QPushButton(‘Start‘, self)
self.btn.move(40, 80)
self.btn.clicked.connect(self.doAction)
self.timer = QtCore.QBasicTimer()
self.step = 0
self.setGeometry(300, 300, 280, 170)
self.setWindowTitle(‘QtGui.QProgressBar‘)
self.show()
def timerEvent(self, e):
if self.step >= 100:
self.timer.stop()
self.btn.setText(‘Finished‘)
return
self.step = self.step + 1
self.pbar.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‘)
def main():
app = QtGui.QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())
if __name__ == ‘__main__‘:
main()
进度条