问题描述
嗯,我正在写一个小的PyQt4应用程序,它只是一个单/双对话框,它必须执行一个外部命令(例如'eject / dev / sr0')并退出。应用程序运行后,按是按钮执行命令,但执行该命令时不能使对话框退出。
#!/ usr / bin / python
# - * - 编码:utf-8 - * -
import sys
import os
import子进程
从PyQt4导入QtGui
从PyQt4导入QtCore
从子进程导入调用
cmd ='eject / dev / sr0'
类示例(QtGui.QWidget):
def __init __(self):
super(Example,self).__ init __()
self.initUI()
def initUI(self):
btn = QtGui.QPushButton('是',self)
btn.clicked.connect(lambda:os.system cmd))
btn.resize(180,40)
btn.move(20,35)
qbtn = QtGui.QPushButton('No ',self)
qbtn.clicked.connect(QtCore.QCoreApplication.instance()。quit)
qbtn.resize(180,40)
qbtn.move(20,80)
self.setWindowTitle('Test')
self.show()
def main():
app = QtGui.QApplication( sys.argv)
ex = Example()
sys.exit(app.exec_())
如果__name__ =='__main__':
main()
这是我的代码。当我单击是时,它正确地调用'eject / dev / sr0'命令,然后对话框仍然可见。我必须单击否关闭应用程序,我希望它在执行命令时自动关闭。我应该添加/修改?
替换 lambda:os.system(cmd)
具有多个语句的函数/方法。
def buttonClicked(self):
os。 system(cmd)
QtCore.QCoreApplication.instance()。quit()
...
btn = QtGui.QPushButton('是',self)
btn.clicked.connect(self.buttonClicked)
...
Well, I'm writing a small PyQt4 app, it's just a single Yes/No dialog which has to execute an external command (e.g. 'eject /dev/sr0') and quit.
The app runs, it executes the command after pressing the "Yes" button, but I cannot make the dialog itself exit when executing the command.
#!/usr/bin/python
# -*- coding: utf-8 -*-
import sys
import os
import subprocess
from PyQt4 import QtGui
from PyQt4 import QtCore
from subprocess import call
cmd = 'eject /dev/sr0'
class Example(QtGui.QWidget):
def __init__(self):
super(Example, self).__init__()
self.initUI()
def initUI(self):
btn = QtGui.QPushButton('Yes', self)
btn.clicked.connect(lambda: os.system(cmd))
btn.resize(180, 40)
btn.move(20, 35)
qbtn = QtGui.QPushButton('No', self)
qbtn.clicked.connect(QtCore.QCoreApplication.instance().quit)
qbtn.resize(180, 40)
qbtn.move(20, 80)
self.setWindowTitle('Test')
self.show()
def main():
app = QtGui.QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
Here is my code. When I click "Yes", it calls the 'eject /dev/sr0' command properly, but after that the dialog is still visible. I have to click "No" to close the app I would like it to close automatically when the command is executed. What should I add/modify?
Replace lambda: os.system(cmd)
with a function/method that has multiple statements.
def buttonClicked(self):
os.system(cmd)
QtCore.QCoreApplication.instance().quit()
...
btn = QtGui.QPushButton('Yes', self)
btn.clicked.connect(self.buttonClicked)
...
这篇关于PyQt对话框 - 按下按钮后如何退出?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!