Python 在qt4中单击按钮时从另一个窗口生成一个窗口

我已经使用qt4 designer创建了两个窗口，并希望将它们链接在一起。我将它们都放在一个文件夹中，并在目录外创建了一个文件，我正在使用该目录导入它们

我可以同时打开两个窗口，但这不是我想做的。我想这样做，当按下一个窗口上的按钮时，它会打开另一个窗口，然后关闭第一个窗口，所以第二个窗口是唯一打开的窗口

这是第一个窗口的代码，在我想打开另一个窗口的按钮旁边有注释

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_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName(_fromUtf8("MainWindow"))
        MainWindow.resize(893, 591)
        MainWindow.setMinimumSize(QtCore.QSize(893, 591))
        MainWindow.setMaximumSize(QtCore.QSize(893, 591))
        icon = QtGui.QIcon()
        icon.addPixmap(QtGui.QPixmap(_fromUtf8("images/turbulence.png")), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        MainWindow.setWindowIcon(icon)
        MainWindow.setStyleSheet(_fromUtf8(""))
        self.centralwidget = QtGui.QWidget(MainWindow)
        self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
        self.label_2 = QtGui.QLabel(self.centralwidget)
        self.label_2.setGeometry(QtCore.QRect(-10, 50, 911, 581))
        self.label_2.setStyleSheet(_fromUtf8("background-color: rgb(0, 0, 0);"))
        self.label_2.setText(_fromUtf8(""))
        self.label_2.setObjectName(_fromUtf8("label_2"))
        self.label = QtGui.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(-20, -10, 921, 71))
        self.label.setStyleSheet(_fromUtf8("background-color: rgb(0, 37, 37);"))
        self.label.setText(_fromUtf8(""))
        self.label.setPixmap(QtGui.QPixmap(_fromUtf8("images/header.png")))
        self.label.setObjectName(_fromUtf8("label"))
        self.label_3 = QtGui.QLabel(self.centralwidget)
        self.label_3.setGeometry(QtCore.QRect(60, 0, 351, 51))
        self.label_3.setStyleSheet(_fromUtf8("font: 20pt \"Sans Serif\";\n"
"color: rgb(0, 221, 221);"))
        self.label_3.setObjectName(_fromUtf8("label_3"))
        self.label_4 = QtGui.QLabel(self.centralwidget)
        self.label_4.setGeometry(QtCore.QRect(-4, 73, 901, 41))
        self.label_4.setStyleSheet(_fromUtf8("background-color: rgba(13, 247, 255, 72);"))
        self.label_4.setText(_fromUtf8(""))
        self.label_4.setObjectName(_fromUtf8("label_4"))
        self.label_6 = QtGui.QLabel(self.centralwidget)
        self.label_6.setGeometry(QtCore.QRect(110, 80, 31, 31))
        self.label_6.setPixmap(QtGui.QPixmap(_fromUtf8("images/arrow.png")))
        self.label_6.setObjectName(_fromUtf8("label_6"))
        self.pushButton = QtGui.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(10, 80, 101, 31))
        self.pushButton.setStyleSheet(_fromUtf8("font: 13pt \"Sans Serif\";\n"
"color: rgb(0, 255, 255);"))
        self.pushButton.setFlat(True)
        self.pushButton.setObjectName(_fromUtf8("pushButton"))
        self.pushButton_2 = QtGui.QPushButton(self.centralwidget)
        self.pushButton_2.setGeometry(QtCore.QRect(140, 80, 81, 31))
        self.pushButton_2.setStyleSheet(_fromUtf8("font: 12pt \"Sans Serif\";\n"
"color: rgb(0, 255, 255);"))
        self.pushButton_2.setFlat(True)
        self.pushButton_2.setObjectName(_fromUtf8("pushButton_2"))
        self.label_5 = QtGui.QLabel(self.centralwidget)
        self.label_5.setGeometry(QtCore.QRect(6, 3, 51, 51))
        self.label_5.setText(_fromUtf8(""))
        self.label_5.setPixmap(QtGui.QPixmap(_fromUtf8("images/turbulence.png")))
        self.label_5.setObjectName(_fromUtf8("label_5"))
        self.label_7 = QtGui.QLabel(self.centralwidget)
        self.label_7.setGeometry(QtCore.QRect(20, 150, 491, 91))
        self.label_7.setStyleSheet(_fromUtf8("font: 30pt \"Sans Serif\";\n"
"color: rgb(0, 191, 191);"))
        self.label_7.setObjectName(_fromUtf8("label_7"))
        self.label_8 = QtGui.QLabel(self.centralwidget)
        self.label_8.setGeometry(QtCore.QRect(60, 240, 831, 271))
        self.label_8.setStyleSheet(_fromUtf8("color: rgb(0, 191, 191);\n"
"font: 10pt \"Sans Serif\";"))
        self.label_8.setObjectName(_fromUtf8("label_8"))
        self.label_9 = QtGui.QLabel(self.centralwidget)
        self.label_9.setGeometry(QtCore.QRect(60, 350, 21, 21))
        self.label_9.setPixmap(QtGui.QPixmap(_fromUtf8("images/bullet.png")))
        self.label_9.setObjectName(_fromUtf8("label_9"))
        self.label_10 = QtGui.QLabel(self.centralwidget)
        self.label_10.setGeometry(QtCore.QRect(60, 380, 21, 21))
        self.label_10.setPixmap(QtGui.QPixmap(_fromUtf8("images/bullet.png")))
        self.label_10.setObjectName(_fromUtf8("label_10"))
        self.label_11 = QtGui.QLabel(self.centralwidget)
        self.label_11.setGeometry(QtCore.QRect(60, 410, 21, 21))
        self.label_11.setPixmap(QtGui.QPixmap(_fromUtf8("images/bullet.png")))
        self.label_11.setObjectName(_fromUtf8("label_11"))
        self.label_12 = QtGui.QLabel(self.centralwidget)
        self.label_12.setGeometry(QtCore.QRect(60, 450, 21, 31))
        self.label_12.setPixmap(QtGui.QPixmap(_fromUtf8("images/bullet.png")))
        self.label_12.setObjectName(_fromUtf8("label_12"))
        self.label_13 = QtGui.QLabel(self.centralwidget)
        self.label_13.setGeometry(QtCore.QRect(-10, 550, 911, 51))
        self.label_13.setStyleSheet(_fromUtf8("background-color: rgba(13, 247, 255, 72);"))
        self.label_13.setText(_fromUtf8(""))
        self.label_13.setObjectName(_fromUtf8("label_13"))
        self.pushButton_3 = QtGui.QPushButton(self.centralwidget)
        self.pushButton_3.setGeometry(QtCore.QRect(818, 560, 71, 21))
        icon1 = QtGui.QIcon()
        icon1.addPixmap(QtGui.QPixmap(_fromUtf8("images/arrow.png")), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.pushButton_3.setIcon(icon1)
        self.pushButton_3.setIconSize(QtCore.QSize(20, 20))
        self.pushButton_3.setObjectName(_fromUtf8("pushButton_3"))
        self.pushButton_4 = QtGui.QPushButton(self.centralwidget)
        self.pushButton_4.setGeometry(QtCore.QRect(10, 560, 71, 23))
        icon2 = QtGui.QIcon()
        icon2.addPixmap(QtGui.QPixmap(_fromUtf8("images/cancel.png")), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.pushButton_4.setIcon(icon2)
        self.pushButton_4.setObjectName(_fromUtf8("pushButton_4"))
        MainWindow.setCentralWidget(self.centralwidget)

        self.retranslateUi(MainWindow)
        QtCore.QObject.connect(self.pushButton_4, QtCore.SIGNAL(_fromUtf8("clicked()")), MainWindow.close)
        QtCore.QObject.connect(self.pushButton_2, QtCore.SIGNAL(_fromUtf8("clicked()")), MainWindow.close) #This button
        QtCore.QObject.connect(self.pushButton_3, QtCore.SIGNAL(_fromUtf8("clicke
import sysd()")), MainWindow.close) #And this button too.
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        MainWindow.setWindowTitle(_translate("MainWindow", "Turbulence", None))
        self.label_3.setText(_translate("MainWindow", "label3", None))
        self.pushButton.setText(_translate("MainWindow", "Welcome", None))
        self.pushButton_2.setText(_translate("MainWindow", "Folders", None))
        self.label_7.setText(_translate("MainWindow", "label7", None))
        self.label_8.setText(_translate("MainWindow", "label8", None))
        self.pushButton_3.setText(_translate("MainWindow", "Next", None))
        self.pushButton_4.setText(_translate("MainWindow", "Cancel", None))

这是第二个窗口的代码

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_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName(_fromUtf8("MainWindow"))
        MainWindow.resize(893, 591)
        MainWindow.setMinimumSize(QtCore.QSize(893, 591))
        MainWindow.setMaximumSize(QtCore.QSize(893, 591))
        icon = QtGui.QIcon()
        icon.addPixmap(QtGui.QPixmap(_fromUtf8("images/turbulence.png")), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        MainWindow.setWindowIcon(icon)
        MainWindow.setStyleSheet(_fromUtf8(""))
        self.centralwidget = QtGui.QWidget(MainWindow)
        self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
        self.label_2 = QtGui.QLabel(self.centralwidget)
        self.label_2.setGeometry(QtCore.QRect(-10, 50, 911, 581))
        self.label_2.setStyleSheet(_fromUtf8("background-color: rgb(0, 0, 0);"))
        self.label_2.setText(_fromUtf8(""))
        self.label_2.setObjectName(_fromUtf8("label_2"))
        self.label = QtGui.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(-20, -10, 921, 71))
        self.label.setStyleSheet(_fromUtf8("background-color: rgb(0, 37, 37);"))
        self.label.setText(_fromUtf8(""))
        self.label.setPixmap(QtGui.QPixmap(_fromUtf8("../images/header.png")))
        self.label.setObjectName(_fromUtf8("label"))
        self.label_3 = QtGui.QLabel(self.centralwidget)
        self.label_3.setGeometry(QtCore.QRect(60, 0, 351, 51))
        self.label_3.setStyleSheet(_fromUtf8("font: 20pt \"Sans Serif\";\n"
"color: rgb(0, 221, 221);"))
        self.label_3.setObjectName(_fromUtf8("label_3"))
        self.label_4 = QtGui.QLabel(self.centralwidget)
        self.label_4.setGeometry(QtCore.QRect(-4, 73, 901, 41))
        self.label_4.setStyleSheet(_fromUtf8("background-color: rgba(13, 247, 255, 72);"))
        self.label_4.setText(_fromUtf8(""))
        self.label_4.setObjectName(_fromUtf8("label_4"))
        self.label_6 = QtGui.QLabel(self.centralwidget)
        self.label_6.setGeometry(QtCore.QRect(100, 80, 31, 31))
        self.label_6.setPixmap(QtGui.QPixmap(_fromUtf8("../images/arrow.png")))
        self.label_6.setObjectName(_fromUtf8("label_6"))
        self.pushButton = QtGui.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(10, 80, 91, 31))
        self.pushButton.setStyleSheet(_fromUtf8("font: 13pt \"Sans Serif\";\n"
"color: rgb(0, 255, 255);"))
        self.pushButton.setFlat(True)
        self.pushButton.setObjectName(_fromUtf8("pushButton"))
        self.pushButton_2 = QtGui.QPushButton(self.centralwidget)
        self.pushButton_2.setGeometry(QtCore.QRect(130, 80, 91, 31))
        self.pushButton_2.setStyleSheet(_fromUtf8("font: 12pt \"Sans Serif\";\n"
"color: rgb(0, 255, 255);"))
        self.pushButton_2.setFlat(True)
        self.pushButton_2.setObjectName(_fromUtf8("pushButton_2"))
        self.label_5 = QtGui.QLabel(self.centralwidget)
        self.label_5.setGeometry(QtCore.QRect(6, 3, 51, 51))
        self.label_5.setText(_fromUtf8(""))
        self.label_5.setPixmap(QtGui.QPixmap(_fromUtf8("../images/turbulence.png")))
        self.label_5.setObjectName(_fromUtf8("label_5"))
        self.label_13 = QtGui.QLabel(self.centralwidget)
        self.label_13.setGeometry(QtCore.QRect(-10, 550, 911, 51))
        self.label_13.setStyleSheet(_fromUtf8("background-color: rgba(13, 247, 255, 72);"))
        self.label_13.setText(_fromUtf8(""))
        self.label_13.setObjectName(_fromUtf8("label_13"))
        self.pushButton_3 = QtGui.QPushButton(self.centralwidget)
        self.pushButton_3.setGeometry(QtCore.QRect(818, 560, 71, 21))
        icon1 = QtGui.QIcon()
        icon1.addPixmap(QtGui.QPixmap(_fromUtf8("../images/arrow.png")), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.pushButton_3.setIcon(icon1)
        self.pushButton_3.setIconSize(QtCore.QSize(20, 20))
        self.pushButton_3.setObjectName(_fromUtf8("pushButton_3"))
        self.pushButton_4 = QtGui.QPushButton(self.centralwidget)
        self.pushButton_4.setGeometry(QtCore.QRect(10, 560, 71, 23))
        icon2 = QtGui.QIcon()
        icon2.addPixmap(QtGui.QPixmap(_fromUtf8("../images/cancel.png")), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.pushButton_4.setIcon(icon2)
        self.pushButton_4.setObjectName(_fromUtf8("pushButton_4"))
        self.pushButton_5 = QtGui.QPushButton(self.centralwidget)
        self.pushButton_5.setGeometry(QtCore.QRect(720, 560, 91, 21))
        icon3 = QtGui.QIcon()
        icon3.addPixmap(QtGui.QPixmap(_fromUtf8("../images/arrowreverse.png")), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.pushButton_5.setIcon(icon3)
        self.pushButton_5.setIconSize(QtCore.QSize(20, 20))
        self.pushButton_5.setObjectName(_fromUtf8("pushButton_5"))
        MainWindow.setCentralWidget(self.centralwidget)

        self.retranslateUi(MainWindow)
        QtCore.QObject.connect(self.pushButton_4, QtCore.SIGNAL(_fromUtf8("clicked()")), MainWindow.close)
        QtCore.QObject.connect(self.pushButton_2, QtCore.SIGNAL(_fromUtf8("clicked()")), MainWindow.close)
        QtCore.QObject.connect(self.pushButton_3, QtCore.SIGNAL(_fromUtf8("clicked()")), MainWindow.close)
        QtCore.QObject.connect(self.pushButton_5, QtCore.SIGNAL(_fromUtf8("clicked()")), MainWindow.close)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        MainWindow.setWindowTitle(_translate("MainWindow", "Turbulence", None))
        self.label_3.setText(_translate("MainWindow", "Customize Your Desktop", None))
        self.pushButton.setText(_translate("MainWindow", "Folders", None))
        self.pushButton_2.setText(_translate("MainWindow", "Themes", None))
        self.pushButton_3.setText(_translate("MainWindow", "Next", None))
        self.pushButton_4.setText(_translate("MainWindow", "Cancel", None))
        self.pushButton_5.setText(_translate("MainWindow", "Previous", None))

我认为这样做的方法可能是创建一个函数，打开第二个窗口，然后关闭第一个窗口，但我不确定是应该将它放在导入这两个窗口的文件中，还是放在第一个窗口中

我可以将按钮连接到一个通常会打开另一个窗口的函数，但是当我单击按钮时，什么也没有发生

---

谢谢您的帮助。

您的问题没有显示太多上下文，但您似乎是PyQt和PyUIC工具的新手

你发布的不是（或者不应该是）你应用程序的真正窗口。这些类是为pyuic或pyuic4生成的

你必须有类似于：

class RealWindow(QMainWindow):
    def __init__(parent=None):
        super(RealWindow, self).__init__(parent) # Call QMainWindow constructor.
        self.__ui = UI_MainWindow()              # Here is when you should use that class.
        self.__ui.setupUI(self)                  # And apply the properties to yout actual window

    def on_some_button_clicked(*args, **args)   # And here is where you do whatever you want to do when you press a button.

另一方面，我不确定在同一个应用程序中有两个主窗口是不是一个好主意。我不知道Qt是否允许这样做

我建议您将其中一个窗口构建为QDialog。或者构建一个包含一组控件的窗口，您可以随意隐藏或显示这些控件

---

我还建议您：

您确实需要重新考虑应用程序的设计

以您描述的方式打开和关闭多个主窗口是丑陋的，完全没有必要。相反，您应该有一个主窗口，并使用一个主窗口来保存一系列页面，这些页面可以使用按钮进行导航

为了试验这个想法，在Qt设计器中创建一个新的主窗口，并向其中添加一个QStackedWidget（位于“容器”部分）。然后打开您已经设计的两个UI，并将每个UI的小部件复制到堆叠小部件的单独页面中

完成后，请确保为所有小部件提供描述性名称，因为在以后开始为程序编写逻辑时需要引用它们。应用程序的主脚本应如下所示：

from PyQt4 import QtCore, QtGui
from mainwindow_ui import Ui_MainWindow

class MainWindow(QtGui.QMainWindow, Ui_MainWindow):
    def __init__(self):
        super(MainWindow, self).__init__()
        self.setupUi(self)
        ...
        self.buttonNext.clicked.connect(self.handleButtonNext)
        self.buttonPrev.clicked.connect(self.handleButtonPrev)

    def handleButtonNext(self):
        index = self.stackedWidget.currentIndex() + 1
        if index < self.stackedWidget.count():
            self.stackedWidget.setCurrentWidget(index)

    def handleButtonPrev(self):
        index = self.stackedWidget.currentIndex() - 1
        if index >= 0:
            self.stackedWidget.setCurrentWidget(index)

if __name__ == '__main__':

    import sys
    app = QtGui.QApplication(sys.argv)
    window = MainWindow()
    window.show()
    sys.exit(app.exec_())

从PyQt4导入QtCore，QtGui
从主窗口\u ui导入ui\u主窗口
类主窗口（QtGui.QMainWindow，Ui\U主窗口）：
定义初始化（自）：
超级（主窗口，自我）。\uuuu初始化
self.setupUi（self）
...
self.buttonNext.clicked.connect（self.handleButtonNext）
self.buttonPrev.clicked.connect（self.handleButtonPrev）
def手柄按钮下一个（自身）：
index=self.stackedWidget.currentIndex（）+1
如果索引=0：
self.stackedWidget.setCurrentWidget（索引）
如果uuuu name uuuuuu='\uuuuuuu main\uuuuuuu'：
导入系统
app=QtGui.QApplication（sys.argv）
窗口=主窗口（）
window.show（）
sys.exit（app.exec_（））

显然，您的程序的真正逻辑将比这更复杂，但它应该能让您大致了解如何进行操作

附言：

---

我本人从未使用过它，但您可能还想看看它是否更适合您的需要。

这实际上是您的另一个问题的重复：。请始终尝试通过编辑现有问题来改进现有问题，而不是开始新问题。这是一个更好的主意！谢谢你。