Python 如何创建自定义PyQt接受/拒绝对话？

我正在努力找出如何创建自定义的接受/拒绝对话。我有一个

WarningMessage（）

类，我希望能够在两种模式下工作：

• 只需通知用户有问题（只有Ok按钮关闭对话框）
• 从用户处获取决定：继续或取消（两个按钮）。此决定应该是类的输出：

  choise=WarningMessage（u'continue？'，choice=True）

第一种模式运行良好，但我无法使第二种模式运行

from PyQt4 import QtGui
from PyQt4.QtCore import *


class WarningMessage(QtGui.QMessageBox):
  '''
  Creates a message for the case when something is wrong
  '''
  def __init__(self, message, choice=False):
    super(WarningMessage, self).__init__()
    self.choice = choice
    if not isinstance(message, basestring):
      message = str(message)
    self.initUI(message)

  def initUI(self, message):
    if not self.choice:
      self.warning(self, u'warning!',
          message, QtGui.QMessageBox.Ok)
      return None
    else:
      self.m_button_box = QtGui.QDialogButtonBox(QtGui.QDialogButtonBox.Ok | QtGui.QDialogButtonBox.Cancel, Qt.Horizontal, self)
      QtGui.QVBoxLayout(self).addWidget(self.m_button_box)
      self.m_button_box.accepted.connect(lambda: self.accept(True))
      self.m_button_box.rejected.connect(lambda: self.accept(False))
      self.warning(self, u'Warning!', message, self.m_button_box)

  def accept(self, yes=True):
    if yes:
      return True
    else:
      return False

if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    choice = WarningMessage(u'Continue?', choice = True)
    print choice
    sys.exit(app.exec_())

这将抛出错误：

TypeError: arguments did not match any overloaded call:
  QMessageBox.warning(QWidget, QString, QString, QMessageBox.StandardButtons buttons=QMessageBox.Ok, QMessageBox.StandardButton defaultButton=QMessageBox.NoButton): argument 4 has unexpected type 'QDialogButtonBox'
  QMessageBox.warning(QWidget, QString, QString, int, int, int button2=0): argument 4 has unexpected type 'QDialogButtonBox'
  QMessageBox.warning(QWidget, QString, QString, QString, QString button1Text=QString(), QString button2Text=QString(), int defaultButtonNumber=0, int escapeButtonNumber=-1): argument 4 has unexpected type 'QDialogButtonBox'

---

使用QtGui.QMessageBox.question，如已解释

---

您可以从本例中轻松更改closeEvent函数，并通过按钮调用它。

多亏@a.smiet，我可以按需要修改我的类，现在我可以让用户选择这种方式：

choice=WarningMessage（u'Continue'，choice=True）。user\u choice

from PyQt4 import QtGui
from PyQt4.QtCore import *

class WarningMessage(QtGui.QMessageBox):
  '''
  Creates a message for the case when something is wrong
  '''
  def __init__(self, message, choice=False):
    super(WarningMessage, self).__init__()
    self.choice = choice
    if not isinstance(message, basestring):
      self.message = str(message)
    else:
      self.message = message
    self.user_choice = None
    self.initUI()


  def initUI(self):
    if not self.choice:
      self.warning(self, u'Warning!',
          self.message, QtGui.QMessageBox.Ok)
      return None
    else:
      reply = QtGui.QMessageBox.question(self, u'Warning!',
            self.message, QtGui.QMessageBox.Yes |
            QtGui.QMessageBox.No)

      if reply == QtGui.QMessageBox.Yes:
        self.user_choice = True
      else:
        self.user_choice = False

if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    choice = WarningMessage(u'Continue?', choice = True).user_choice
    print choice
    sys.exit(app.exec_())

from PyQt4 import QtGui
from PyQt4.QtCore import *

class WarningMessage(QtGui.QMessageBox):
  '''
  Creates a message for the case when something is wrong
  '''
  def __init__(self, message, choice=False):
    super(WarningMessage, self).__init__()
    self.choice = choice
    if not isinstance(message, basestring):
      self.message = str(message)
    else:
      self.message = message
    self.user_choice = None
    self.initUI()


  def initUI(self):
    if not self.choice:
      self.warning(self, u'Warning!',
          self.message, QtGui.QMessageBox.Ok)
      return None
    else:
      reply = QtGui.QMessageBox.question(self, u'Warning!',
            self.message, QtGui.QMessageBox.Yes |
            QtGui.QMessageBox.No)

      if reply == QtGui.QMessageBox.Yes:
        self.user_choice = True
      else:
        self.user_choice = False

if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    choice = WarningMessage(u'Continue?', choice = True).user_choice
    print choice
    sys.exit(app.exec_())