PyQt5从主窗口打开第二个窗口 [英] PyQt5 opening second window from main
本文介绍了PyQt5从主窗口打开第二个窗口的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我是python的新手（直到演讲3和MIT 6001计算机科学和编程入门
Hi I am new to python (up to lecture 3 and of MIT 6001 Introduction to Computer Science and Programming
在Python中），我还是开始玩PyQt5和Designer （Python3，PyQt5，在Linux上。）
in Python) nevetheless I started playing with PyQt5 and Designer (Python3, PyQt5, on linux).
我读了一些关于PyQt5的文章，但是对面向对象编程和Qt并不太了解。
I read, a little bit about PyQt5, but dont understand a lot about Object Oriented Programming and, Qt
文档也像克林贡一样。无法弄清楚为什么该脚本test.py无法打开第二个
documentation is like Klingon too me. Can't figure out why this script test.py fails to open the second
窗口，实际上它确实打开了它，我可以看到它短暂地在前面消失了。第一个窗口
window, actually it does open it, I can see it briefly beefore desolve in front of the first window
当我按下退出按钮时？有什么帮助吗？以及任何容易找到的资源，可以找到
when I push the Quit Button ? Any help ? And any kind of easy resource where to find the logic of the
Qt的不同类的逻辑以及像我这样的未受过教育的应用循环。
different classes of Qt and the app loop for a non educated like me.
test.py
!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Wed Apr 8 14:25:12 2020
@author: Pietro
"""
import sys
from PyQt5 import QtWidgets, uic
from PyQt5.QtWidgets import QDesktopWidget
def main():
class quitto(QtWidgets.QMainWindow):
def __init__(self):
super(quitto, self).__init__()
uic.loadUi('exitmain.ui', self)
self.center()
self.show()
print('inside quitting2 ' *5)
def center(self):
qr = self.frameGeometry()
cp = QDesktopWidget().availableGeometry().center()
qr.moveCenter(cp)
self.move(qr.topLeft())
class menu(QtWidgets.QMainWindow):
def __init__(self):
super(menu, self).__init__()
uic.loadUi('main.ui', self)
self.ButtonQ.clicked.connect(self.QPushButtonQPressed)
self.center()
self.show()
def center(self):
qr = self.frameGeometry()
cp = QDesktopWidget().availableGeometry().center()
qr.moveCenter(cp)
self.move(qr.topLeft())
def QPushButtonQPressed(self):
#This is executed when the button is pressed
print('buttonB pressed' *5)
pippo=quitto()
pippo.show()
app = QtWidgets.QApplication(sys.argv)
window=menu()
app.exec_()
if __name__ == '__main__':
和main.ui
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>MainWindow</class>
<widget class="QMainWindow" name="MainWindow">
<property name="windowModality">
<enum>Qt::WindowModal</enum>
</property>
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>520</width>
<height>600</height>
</rect>
</property>
<property name="windowTitle">
<string>MainWindow</string>
</property>
<property name="windowIcon">
<iconset resource="resource001.qrc">
<normaloff>:/main/python.png</normaloff>
<normalon>:/main/python.png</normalon>
<disabledoff>:/main/python.png</disabledoff>
<disabledon>:/main/python.png</disabledon>
<activeoff>:/main/python.png</activeoff>
<activeon>:/main/python.png</activeon>
<selectedoff>:/main/python.png</selectedoff>
<selectedon>:/main/python.png</selectedon>:/main/python.png</iconset>
</property>
<property name="styleSheet">
<string notr="true">QPushButton{
background-color: #9de650;
}
QPushButton:hover{
background-color: green;
}
QPushButton#ButtonQ{
background-color: orange;
}
QPushButton#ButtonQ:hover{
background-color: red;
}</string>
</property>
<widget class="QWidget" name="centralwidget">
<widget class="QLabel" name="label">
<property name="geometry">
<rect>
<x>20</x>
<y>0</y>
<width>471</width>
<height>71</height>
</rect>
</property>
<property name="font">
<font>
<pointsize>16</pointsize>
<weight>75</weight>
<bold>true</bold>
<underline>true</underline>
</font>
</property>
<property name="text">
<string>House-Buying-Menu</string>
</property>
<property name="alignment">
<set>Qt::AlignCenter</set>
</property>
</widget>
<widget class="QPushButton" name="ButtonA">
<property name="geometry">
<rect>
<x>170</x>
<y>100</y>
<width>151</width>
<height>81</height>
</rect>
</property>
<property name="font">
<font>
<pointsize>20</pointsize>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
<property name="text">
<string>A</string>
</property>
</widget>
<widget class="QPushButton" name="ButtonB">
<property name="geometry">
<rect>
<x>170</x>
<y>210</y>
<width>151</width>
<height>81</height>
</rect>
</property>
<property name="font">
<font>
<pointsize>20</pointsize>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
<property name="text">
<string>B</string>
</property>
</widget>
<widget class="QPushButton" name="ButtonC">
<property name="geometry">
<rect>
<x>170</x>
<y>320</y>
<width>151</width>
<height>81</height>
</rect>
</property>
<property name="font">
<font>
<pointsize>20</pointsize>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
<property name="text">
<string>C</string>
</property>
</widget>
<widget class="QPushButton" name="ButtonQ">
<property name="geometry">
<rect>
<x>170</x>
<y>450</y>
<width>151</width>
<height>81</height>
</rect>
</property>
<property name="font">
<font>
<pointsize>20</pointsize>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
<property name="text">
<string>QUIT</string>
</property>
</widget>
</widget>
<widget class="QMenuBar" name="menubar">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>520</width>
<height>29</height>
</rect>
</property>
</widget>
<widget class="QStatusBar" name="statusbar"/>
</widget>
<resources>
<include location="resource001.qrc"/>
</resources>
<connections/>
</ui>
和mainexit.ui
and mainexit.ui
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>MainWindow</class>
<widget class="QMainWindow" name="MainWindow">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>631</width>
<height>496</height>
</rect>
</property>
<property name="windowTitle">
<string>MainWindow</string>
</property>
<widget class="QWidget" name="centralwidget">
<widget class="QDialogButtonBox" name="buttonBox">
<property name="geometry">
<rect>
<x>200</x>
<y>310</y>
<width>174</width>
<height>33</height>
</rect>
</property>
<property name="standardButtons">
<set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
</property>
</widget>
</widget>
<widget class="QMenuBar" name="menubar">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>631</width>
<height>29</height>
</rect>
</property>
</widget>
<widget class="QStatusBar" name="statusbar"/>
</widget>
<resources/>
<connections/>
</ui>
推荐答案
@musicamante感谢您长期以来的努力详细的帖子（我投票赞成，但不算对不起）不确定我是否必须就下一个问题发表另一篇文章，但与上面的问题有关。我一直试图使我的脚本正常工作，但最终得到了：
@musicamante thank for your long and detailed post (I voted fo it but it doesnt count, sorry) not sure if I have to make another post about the next question but its related to the one above. I kept trying to make my script work and I ended up with:
test2.py
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Wed Apr 8 14:25:12 2020
@author: Pietro
"""
import sys
from PyQt5 import QtWidgets, uic
#import resource
def main():
class Quitto(QtWidgets.QDialog):
def quitbuttonboxquit(self):
print('system exit')
app.quit()
def quitbuttonboxnonquit(self):
print('return to main')
window.show()
self.close()
def __init__(self):
super(Quitto, self).__init__()
uic.loadUi('exitdialog2.ui', self)
self.center()
self.show()
print('inside quitting2 ' *5)
self.QuitbuttonBox.accepted.connect(self.quitbuttonboxquit)
self.QuitbuttonBox.rejected.connect(self.quitbuttonboxnonquit)
def center(self):
qr = self.frameGeometry()
cp = QtWidgets.QDesktopWidget().availableGeometry().center()
qr.moveCenter(cp)
self.move(qr.topLeft())
def closeEvent(self, event):
event.ignore()
class Menu(QtWidgets.QMainWindow):
def __init__(self):
super(Menu, self).__init__()
uic.loadUi('main.ui', self)
self.ButtonQ.clicked.connect(self.qpushbuttonqpressed)
self.center()
self.show()
def center(self):
qr = self.frameGeometry()
cp = QtWidgets.QDesktopWidget().availableGeometry().center()
qr.moveCenter(cp)
self.move(qr.topLeft())
def qpushbuttonqpressed(self): #This is executed when the button is pressed
print('buttonB pressed' *5)
window.hide()
pippo=Quitto()
pippo.exec_()
def closeEvent(self, event): #Your desired functionality here
event.ignore()
app = QtWidgets.QApplication(sys.argv)
sshFile="coffee.qss"
with open(sshFile,"r") as fh:
app.setStyleSheet(fh.read())
window=Menu()
app.exec_()
if __name__ == '__main__':
main()
和exitdialog.ui
and exitdialog.ui
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>Dialog</class>
<widget class="QDialog" name="Dialog">
<property name="windowModality">
<enum>Qt::WindowModal</enum>
</property>
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>586</width>
<height>522</height>
</rect>
</property>
<property name="font">
<font>
<italic>true</italic>
</font>
</property>
<property name="windowTitle">
<string>Dialog</string>
</property>
<property name="styleSheet">
<string notr="true"/>
</property>
<widget class="QDialogButtonBox" name="QuitbuttonBox">
<property name="geometry">
<rect>
<x>40</x>
<y>460</y>
<width>341</width>
<height>32</height>
</rect>
</property>
<property name="font">
<font>
<pointsize>18</pointsize>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
<property name="styleSheet">
<string notr="true">QPushButton{
background-color: #17eb3e;
}
QPushButton:hover{
background-color: red;
}
</string>
</property>
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="standardButtons">
<set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
</property>
</widget>
<widget class="QLabel" name="label">
<property name="geometry">
<rect>
<x>50</x>
<y>30</y>
<width>491</width>
<height>341</height>
</rect>
</property>
<property name="styleSheet">
<string notr="true">image: url(:/main/alert.png);</string>
</property>
<property name="text">
<string/>
</property>
</widget>
<widget class="QLabel" name="label_2">
<property name="geometry">
<rect>
<x>170</x>
<y>400</y>
<width>271</width>
<height>41</height>
</rect>
</property>
<property name="font">
<font>
<pointsize>18</pointsize>
<weight>75</weight>
<italic>false</italic>
<bold>true</bold>
</font>
</property>
<property name="styleSheet">
<string notr="true">QLabel {
color : red
}</string>
</property>
<property name="text">
<string>Are you sure to Quit ?!?</string>
</property>
</widget>
</widget>
<resources>
<include location="resource001.qrc"/>
</resources>
<connections>
<connection>
<sender>QuitbuttonBox</sender>
<signal>accepted()</signal>
<receiver>Dialog</receiver>
<slot>accept()</slot>
<hints>
<hint type="sourcelabel">
<x>248</x>
<y>254</y>
</hint>
<hint type="destinationlabel">
<x>157</x>
<y>274</y>
</hint>
</hints>
</connection>
<connection>
<sender>QuitbuttonBox</sender>
<signal>rejected()</signal>
<receiver>Dialog</receiver>
<slot>reject()</slot>
<hints>
<hint type="sourcelabel">
<x>316</x>
<y>260</y>
</hint>
<hint type="destinationlabel">
<x>286</x>
<y>274</y>
</hint>
</hints>
</connection>
</connections>
</ui>
稍后我将尝试拆分函数和类（首先我需要弄清楚尽管如此，我还是将
类更改为：
I'll try to split function and classes later (first I need to figure out classes more) nevertheless I changed class Quitto to :
类Quitto（QtWidgets.QDialog）
并更改：
def qpushbuttonqpressed(self): #This is executed when the button is pressed
print('buttonB pressed' *5)
window.hide()
pippo=Quitto()
pippo.exec_()
在上一个脚本中，使用：
in the previous script using:
-窗口。 hide（）在短暂显示两个窗口后关闭所有东西
-- window.hide() was shutting downt everything after showing briefly the two windows
而使用
-pippo.exec （）而不是pippo.show（）在
-- pippo.exec() instead of pippo.show() was showing the new 2nd window on top of the
other顶部显示新的第二个窗口，关闭它们后，我得到一个：
other and after closing them I was getting a:
AttributeError： quitto对象没有属性 exec _
使用点第二个脚本中的o.show（）都不起作用，但是pippo.exe_（）做了
Using pippo.show() in the second script wasnt working either but pippo.exe_() did the
技巧。
为什么将类Quitto（）更改为QtWidgets.QMainWindow为什么会出现属性错误？
And why changing class Quitto() as QtWidgets.QMainWindow I get the Attribute error ?
这篇关于PyQt5从主窗口打开第二个窗口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IT屋！
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