如何在QT设计器中生成动态进度条？
如何在QT设计器中生成动态进度条？
提问于 2018-07-26 04:47:05
我想制作一个动态进度条，它以恒定速率达到最大值。
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(1007, 837)
self.textBrowser = QtWidgets.QTextBrowser(Dialog)
self.textBrowser.setGeometry(QtCore.QRect(170, 80, 661, 81))
self.textBrowser.setObjectName("textBrowser")
self.progressBar = QtWidgets.QProgressBar(Dialog)
self.progressBar.setGeometry(QtCore.QRect(330, 320, 261, 32))
#self.progressBar.setProperty("value", 0)
self.progressBar.setObjectName("progressBar")
self.label = QtWidgets.QLabel(Dialog)
self.label.setGeometry(QtCore.QRect(210, -10, 691, 471))
self.label.setObjectName("label")
self.label_2 = QtWidgets.QLabel(Dialog)
self.label_2.setGeometry(QtCore.QRect(200, 490, 97, 30))
self.label_2.setText("")
self.label_2.setObjectName("label_2")
self.label.raise_()
self.textBrowser.raise_()
self.label_2.raise_()
self.progressBar.raise_()
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def bar(self):
print "here"
self.completed = 0
while self.completed < 100:
self.completed += 0.0000000000 1
self.progressBar.setValue(self.completed)
def retranslateUi(self, Dialog):
_translate = QtCore.QCoreApplication.translate
Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
self.textBrowser.setHtml(_translate("Dialog", "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0//EN\" \"http://www.w3.org/TR/REC-html40/strict.dtd\">\n"
"<html><head><meta name=\"qrichtext\" content=\"1\" /><style type=\"text/css\">\n"
"p, li { white-space: pre-wrap; }\n"
"</style></head><body style=\" font-family:\'Cantarell\'; font-size:13.75pt; font-weight:400; font-style:normal;\">\n"
"<p align=\"center\" style=\" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\">M-CAD</p>\n"
"<p align=\"center\" style=\" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\">MALARIA COMPUTER AIDED DIAGNOSIS</p></body></html>"))
self.label.setText(_translate("Dialog", "<html><head/><body><p><img src=\":/newPrefix/drdo-slide.jpg\"/></p></body></html>"))
import test_rc
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
Dialog = QtWidgets.QDialog()
ui = Ui_Dialog()
ui.setupUi(Dialog)
ui.bar()
Dialog.show()
sys.exit(app.exec_())Stack Overflow用户
发布于 2018-07-26 14:12:19
while循环阻止了Qt事件循环的正常工作，解决方案是用GUI友好的对象(例如QTimer或更好的QTimeLine)实现相同的逻辑。
另一方面，建议不要修改Qt Designer提供的类，而是实现继承适当的小部件和设计的新类
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Dialog(object):
def setupUi(self, Dialog):
...
def retranslateUi(self, Dialog):
...
import test_rc
class Dialog(QtWidgets.QDialog, Ui_Dialog):
def __init__(self, parent=None):
QtWidgets.QDialog.__init__(self, parent)
self.setupUi(self)
def bar(self):
timeLine = QtCore.QTimeLine(1000, self)
timeLine.setFrameRange(0, 100)
timeLine.frameChanged.connect(self.progressBar.setValue)
timeLine.start()
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = Dialog()
w.bar()
w.show()
sys.exit(app.exec_())页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/-100005789
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