Python I';连接按钮时,pyqt5中出现错误
我是第一次使用pyqt5。在从QT designer创建UI,然后将UI文件转换为python文件后,我遇到了错误,奇怪的是,有时当我尝试从designer重新创建UI时,我没有遇到错误,但有时使用相同的代码逐行执行时,我会遇到此错误。也许我在qt设计器中做错了什么,我不知道哪里出了问题 QObject::connect:无法将QPushButton::clicked(bool)连接到(null)::browse_slot() TypeError:单击(bool)和浏览\u插槽()之间的连接()失败 我的代码:Python I';连接按钮时,pyqt5中出现错误,python,python-3.x,pyqt,pyqt5,Python,Python 3.x,Pyqt,Pyqt5,我是第一次使用pyqt5。在从QT designer创建UI,然后将UI文件转换为python文件后,我遇到了错误,奇怪的是,有时当我尝试从designer重新创建UI时,我没有遇到错误,但有时使用相同的代码逐行执行时,我会遇到此错误。也许我在qt设计器中做错了什么,我不知道哪里出了问题 QObject::connect:无法将QPushButton::clicked(bool)连接到(null)::browse_slot() TypeError:单击(bool)和浏览\u插槽()之间的连接()
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(640, 480)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(280, 200, 89, 25))
self.pushButton.setObjectName("pushButton")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 640, 22))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
self.pushButton.clicked.connect(self.browse_slot)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton.setText(_translate("MainWindow", "PushButton"))
@QtCore.pyqtSlot( )
def browse_slot( self ):
options = QtWidgets.QFileDialog.Options()
options |= QtWidgets.QFileDialog.DontUseNativeDialog
fileName, _ = QtWidgets.QFileDialog.getOpenFileName(
None,
"QFileDialog.getOpenFileName()",
"",
"All Files (*);;Python Files (*.py)",
options=options)
if fileName:
self.debugPrint( "setting file name: " + fileName )
self.model.setFileName( fileName )
self.refreshAll()
if __name__ == "__main__":
import sys
app = QApplication(sys.argv)
Window = QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(Window)
Window.show()
sys.exit(app.exec_())
如果要使用@QtCore.pyqtSlot()建立连接,则必须在继承自QObject的类中使用它,另一方面,指出建议您创建一个继承自适当小部件的类,在本例中为QMainWindow,并将该类用作接口,这也解决了第一点,因为QMainWindow继承自QObject
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(640, 480)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(280, 200, 89, 25))
self.pushButton.setObjectName("pushButton")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 640, 22))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton.setText(_translate("MainWindow", "PushButton"))
class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.setupUi(self)
self.pushButton.clicked.connect(self.browse_slot)
@QtCore.pyqtSlot()
def browse_slot(self):
options = QtWidgets.QFileDialog.Options()
options |= QtWidgets.QFileDialog.DontUseNativeDialog
fileName, _ = QtWidgets.QFileDialog.getOpenFileName(
None,
"QFileDialog.getOpenFileName()",
"",
"All Files (*);;Python Files (*.py)",
options=options)
if fileName:
self.debugPrint( "setting file name: " + fileName )
self.model.setFileName( fileName )
self.refreshAll()
if __name__ == "__main__":
import sys
app =QtWidgets.QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())
改为
class Ui_MainWindow(Qobject):
def setupUi(self, MainWindow):
谢谢你的快速帮助。
class Ui_MainWindow(Qobject):
def setupUi(self, MainWindow):