使用 PyQt5/QtDesigner 弹出窗口或多个窗口

问题描述

我已经学习 Python 1 个月了.我可以为我的 ui 创建一个弹出窗口吗?我想按下 MainWindow 上的一个按钮并打开一个新窗口.

I've been studying python for 1 month. Can I create a pop up window for my ui? I want to press a button on MainWindow and open a new window.

最好的问候.

推荐答案

试试看:

main.py

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui     import *
from PyQt5.QtCore    import *

from mainwindow_ui import Ui_MainWindow
from dialog_ui     import Ui_Dialog

class MyDialog(QDialog):
    def __init__(self):
        super().__init__()
        self.ui = Ui_Dialog()
        self.ui.setupUi(self)

class MyWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)

        centralWidget = QWidget()
        self.setCentralWidget(centralWidget)
        gridLayout = QGridLayout(centralWidget)
        gridLayout.addWidget(self.ui.label,      0, 0, alignment=Qt.AlignCenter)
        gridLayout.addWidget(self.ui.pushButton, 1, 0)

    def dialogbox(self):
        self.hide()
        self.myDialog = MyDialog()
        self.myDialog.show()


if __name__ == '__main__':
    app = QApplication(sys.argv)
    w = MyWindow()
    w.show()
    sys.exit(app.exec_())

mainwindow_ui.py

mainwindow_ui.py

from PyQt5 import QtCore, QtGui, QtWidgets
from dialog_ui import Ui_Dialog

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(685, 353)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(240, 66, 331, 181))
        self.label.setObjectName("label")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(280, 300, 200, 27))
        self.pushButton.setObjectName("pushButton")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 685, 25))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        self.pushButton.clicked.connect(MainWindow.dialogbox)

        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))

        self.label.setText(_translate("MainWindow",
            """
                <p><span style=\" font-size:26pt;\">MainWindow</span></p>
                <hr>
            """))
        self.pushButton.setText(_translate("MainWindow", "Open a new window"))

dialog_ui.py

dialog_ui.py

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName("Dialog")
        Dialog.resize(400, 211)
        self.label = QtWidgets.QLabel(Dialog)
        self.label.setGeometry(QtCore.QRect(20, 70, 360, 71))
        self.label.setObjectName("label")

        self.retranslateUi(Dialog)
        QtCore.QMetaObject.connectSlotsByName(Dialog)

    def retranslateUi(self, Dialog):
        Dialog.setWindowTitle("Dialog")
        self.label.setText(
            """
              <p><br><br><span style=\" font-size:28pt;\">This is a new window.</span></p>
            """)

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