pyqt:messagebox在几秒钟后自动关闭

Question

我试图做一个警告消息框，几秒钟后自动消失。 我已经完成了以下代码：

def warning(self):
   messagebox = QtGui.QMessageBox(self)
   messagebox.setWindowTitle("wait")
   messagebox.setText("wait (closing automatically in {0} secondes.)".format(3))
   messagebox.setStandardButtons(messagebox.NoButton)
   self.timer2 = QtCore.QTimer()
   self.time_to_wait = 3
   def close_messagebox(e):
      e.accept()
      self.timer2.stop()
      self.time_to_wait = 3
   def decompte():
      messagebox.setText("wait (closing automatically in {0} secondes.)".format(self.time_to_wait))
      if self.time_to_wait <= 0:
         messagebox.closeEvent = close_messagebox
         messagebox.close()
      self.time_to_wait -= 1
   self.connect(self.timer2,QtCore.SIGNAL("timeout()"),decompte)
   self.timer2.start(1000)
   messagebox.exec_()

它实际上很好，自动关闭部分。 我的问题是，当有人试图在几秒钟前通过点击窗口的x按钮手动关闭它时，消息框永远不会关闭。“等待时间”变为负数，消息框显示“4秒后自动关闭”，它永远不会关闭。在

你知道我该怎么避免吗？ 问候

Answer 1

试试我的解决方案， 我已经根据您的需求创建了一个新类型的QMessageBox

import sys
from PyQt4 import QtCore
from PyQt4 import QtGui


class TimerMessageBox(QtGui.QMessageBox):
    def __init__(self, timeout=3, parent=None):
        super(TimerMessageBox, self).__init__(parent)
        self.setWindowTitle("wait")
        self.time_to_wait = timeout
        self.setText("wait (closing automatically in {0} secondes.)".format(timeout))
        self.setStandardButtons(QtGui.QMessageBox.NoButton)
        self.timer = QtCore.QTimer(self)
        self.timer.setInterval(1000)
        self.timer.timeout.connect(self.changeContent)
        self.timer.start()

    def changeContent(self):
        self.setText("wait (closing automatically in {0} secondes.)".format(self.time_to_wait))
        self.time_to_wait -= 1
        if self.time_to_wait <= 0:
            self.close()

    def closeEvent(self, event):
        self.timer.stop()
        event.accept()


class Example(QtGui.QWidget):
    def __init__(self):
        super(Example, self).__init__()
        btn = QtGui.QPushButton('Button', self)
        btn.resize(btn.sizeHint())
        btn.move(50, 50)
        self.setWindowTitle('Example')
        btn.clicked.connect(self.warning)

    def warning(self):
        messagebox = TimerMessageBox(5, self)
        messagebox.exec_()


def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    ex.show()
    sys.exit(app.exec_())


if __name__ == '__main__':
    main()