当我单击QtWidgets.QPushButton来显示来自QtWidgets.QComboBox的itemData时,我遇到了问题。我用以下代码填充ComboBox:
self.comboBox.addItem("Sandro",1)
self.comboBox.addItem("Daniel",2)
self.comboBox.addItem("Pedro",3)
它填充了QtWidgets.QComboBox,但是当我设置QtWidgets.QPushButton时出现了问题。我在setupUi中添加了它:
self.pushButton.clicked.connect(self.showId)
最后开发了函数showId:
id_us = self.comboBox.itemData(self.comboBox.currentIndex())
print('VAL ',id_us)
单击按钮时,窗口关闭,这是什么问题? 我共享我的accessForm.py的所有代码:
# -*- coding: utf-8 -*-
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName("Form")
Form.resize(598, 245)
self.groupBox = QtWidgets.QGroupBox(Form)
self.groupBox.setGeometry(QtCore.QRect(10, 20, 541, 201))
self.groupBox.setObjectName("groupBox")
self.pushButton = QtWidgets.QPushButton(self.groupBox)
self.pushButton.setGeometry(QtCore.QRect(50, 150, 75, 23))
self.pushButton.setObjectName("pushButton")
self.label = QtWidgets.QLabel(self.groupBox)
self.label.setGeometry(QtCore.QRect(40, 30, 47, 13))
self.label.setObjectName("label")
self.comboBox = QtWidgets.QComboBox(self.groupBox)
self.comboBox.setGeometry(QtCore.QRect(110, 30, 111, 22))
self.comboBox.setObjectName("comboBox")
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
self.fillCombo()
self.pushButton.clicked.connect(self.showId)
def retranslateUi(self, Form):
_translate = QtCore.QCoreApplication.translate
Form.setWindowTitle(_translate("Form", "Form"))
self.groupBox.setTitle(_translate("Form", "Datos"))
self.pushButton.setText(_translate("Form", "Inicio"))
self.label.setText(_translate("Form", "TextLabel"))
def showId(self):
id_us = self.comboBox.itemData(self.comboBox.currentIndex()).toPyObject()
print('VAL ',id_us)
def fillCombo(self):
self.comboBox.addItem("Sandro",1)
self.comboBox.addItem("Daniel",2)
self.comboBox.addItem("Pedro",3)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
Form = QtWidgets.QWidget()
ui = Ui_Form()
ui.setupUi(Form)
Form.show()
sys.exit(app.exec_())
谢谢。
答案 0 :(得分:3)
在我看来,您正在使用一个过时的教程,在PyQt4中,您必须使用toPyObject()
方法将PyQt对象转换为python本机对象,但是在PyQt5中,则不再需要:
def showId(self):
id_us = self.comboBox.itemData(self.comboBox.currentIndex()) # .toPyObject()
print('VAL ',id_us)
由于IDE在处理PyQt错误消息方面存在问题,因此建议使用终端或CMD来获取错误消息。