我是PyQt(python接口)编程的新手,我喜欢使用QProgressDialog来显示某些任务的进度,所以问题是,我有这个:
虽然改变了进度的价值,谢谢你的帮助
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.label = QtWidgets.QLabel(self.centralwidget)
self.label.setGeometry(QtCore.QRect(250, 160, 231, 161))
self.label.setObjectName("label")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 21))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.p = QProgressDialog('titel','',0,10000)
self.p.setValue(0)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.label.setText(_translate("label test"))
def work(self):
for index in range(10001):
time.sleep(2)
self.p.setValue(index)
print(index)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
ui.work()
sys.exit(app.exec_())
答案 0 :(得分:0)
PyQt通过app.exec_()
创建一个循环,这用于管理GUI动态,例如信号,事件等。因此,如果您中断该循环,您将遇到如下所示的问题。在它的情况下sleep()
阻止程序的执行。解决此问题的一种方法是使用QTimer
,如下所示:
[...]
self.p = QProgressDialog('title','',0,10000)
self.p.setValue(0)
self.timer = QtCore.QTimer(MainWindow)
self.timer.timeout.connect(self.work)
self.timer.start(2000)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
[...]
def work(self):
self.p.setValue(self.p.value()+1)
if self.p.value() == self.p.maximum():
self.timer.stop()
[...]