PyQt4 ----我想在我的代码中使用closeEvent()

Question

我是python新手。我正在开发客房管理程序。我认为如果用户按下x按钮，我想给出一个警告信息。所以，我想在第一个代码中使用closeEvent()。换句话说，第一码+第二码请

---

# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'C:UsersPJH11Desktopdia3.ui'
#
# Created: Sun Aug 17 16:23:08 2014
#      by: PyQt4 UI code generator 4.11.1
#
# WARNING! All changes made in this file will be lost!
from PyQt4 import QtCore, QtGui
try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    def _fromUtf8(s):
        return s
try:
    _encoding = QtGui.QApplication.UnicodeUTF8
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig)
class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName(_fromUtf8("Dialog"))
        Dialog.resize(190, 98)
        self.pushButton = QtGui.QPushButton(Dialog)
        self.pushButton.setGeometry(QtCore.QRect(0, 0, 191, 101))
        font = QtGui.QFont()
        font.setPointSize(13)
        self.pushButton.setFont(font)
        self.pushButton.setObjectName(_fromUtf8("pushButton"))
        self.retranslateUi(Dialog)
        QtCore.QMetaObject.connectSlotsByName(Dialog)
    def retranslateUi(self, Dialog):
        Dialog.setWindowTitle(_translate("Dialog", "Dialog", None))
        self.pushButton.setText(_translate("Dialog", "hi", None))

if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    Dialog = QtGui.QDialog()
    ui = Ui_Dialog()
    ui.setupUi(Dialog)
    Dialog.show()
    sys.exit(app.exec_())

---

def closeEvent(self, event):
    reply = QtGui.QMessageBox.question(self, 'Message',
        "Are you sure to quit?", QtGui.QMessageBox.Yes | 
        QtGui.QMessageBox.No, QtGui.QMessageBox.No)
    if reply == QtGui.QMessageBox.Yes:
        event.accept()
    else:
        event.ignore()

Answer 1

你可以实现你的类来创建closeEvent(作为你的代码关闭事件)，把它们放在main中并创建对象。您可以使用bool QWidget.close (self)调用关闭事件。

完整的示例;

from PyQt4 import QtCore, QtGui
try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    def _fromUtf8(s):
        return s
try:
    _encoding = QtGui.QApplication.UnicodeUTF8
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig)
class Ui_Dialog(object):
    def setupUi(self, Dialog):
        self.Dialog = Dialog
        self.Dialog.setObjectName(_fromUtf8("self.Dialog"))
        self.Dialog.resize(190, 98)
        self.pushButton = QtGui.QPushButton(self.Dialog)
        self.pushButton.setGeometry(QtCore.QRect(0, 0, 191, 101))
        font = QtGui.QFont()
        font.setPointSize(13)
        self.pushButton.setFont(font)
        self.pushButton.setObjectName(_fromUtf8("pushButton"))
        self.retranslateUi(self.Dialog)
        QtCore.QMetaObject.connectSlotsByName(self.Dialog)
        QtCore.QObject.connect(self.pushButton, QtCore.SIGNAL('released()'), self.Dialog.close) # <- put signal to close when clicked.
    def retranslateUi(self, Dialog):
        self.Dialog.setWindowTitle(_translate("self.Dialog", "self.Dialog", None))
        self.pushButton.setText(_translate("self.Dialog", "hi", None))
class QCustomDialog (QtGui.QDialog): # <- Implement your own
    def closeEvent(self, event):
        reply = QtGui.QMessageBox.question(self, 'Message',
            "Are you sure to quit?", QtGui.QMessageBox.Yes | 
            QtGui.QMessageBox.No, QtGui.QMessageBox.No)
        if reply == QtGui.QMessageBox.Yes:
            event.accept()
        else:
            event.ignore()
if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    Dialog = QCustomDialog()
    ui = Ui_Dialog()
    ui.setupUi(Dialog)
    Dialog.show()
    sys.exit(app.exec_())

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认为,