Question

我在Qt Designer MainWindow Form和WidgetForm中创建了。在MainWindow Form中，我添加了Mdi Area。如何在单击菜单选项后在MdiArea中打开我的设备窗口小部件窗体？

我的main.py

from windows.devices import Ui_Form_device

 class Ui_MainWindow(object):

    def Devices(self):
        self.Form_device = QtWidgets.QWidget()
        self.ui = Ui_Form_device()
        self.ui.setupUi(self.Form_device)
        self.Form_device.show()

    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(823, 681)

        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        MainWindow.setCentralWidget(self.centralwidget)
        self.centralwidget.setLayout(QtWidgets.QVBoxLayout(self.centralwidget))
        self.mdiArea = QtWidgets.QMdiArea(self.centralwidget)
        self.centralwidget.layout().addWidget(self.mdiArea)
        ...

        # menu : DEVICES
        self.actionDevices = QtWidgets.QAction(MainWindow)
        self.actionDevices.setObjectName("actionDevices")
        self.actionDevices.triggered.connect(self.Devices)

        ...


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

devices.py

class Ui_Form_device(object):
    def setupUi(self, Form_device):
        Form_device.setObjectName("Form_device")
        Form_device.resize(400, 300)
        self.label = QtWidgets.QLabel(Form_device)
        self.label.setGeometry(QtCore.QRect(100, 150, 111, 16))

Answer 1

请按以下方式致电mdiArea.addSubWindow()：

def Devices(self):
    self.Form_device = QtWidgets.QWidget()
    self.ui = Ui_Form_device()
    self.ui.setupUi(self.Form_device)
    self.mdiArea.addSubWindow(self.Form_Device)

Answer 2

建议不要修改使用Qt Designer进行设计生成的类，因为如果对设计进行任何更改，您将覆盖丢失逻辑部分更改的代码。您必须创建一个继承自Qt Designer中所选小部件的类，并使用初始类填充它。

查看以下内容以获取更多建议：

http://pyqt.sourceforge.net/Docs/PyQt5/designer.html

要做到这一点，你应该做的是使用addSubWindow()方法，这会返回QMdiSubWindow，你应该展示这个新小部件。

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
    ...

class DevicesForm(QtWidgets.QWidget, Ui_Form_device):
    def __init__(self, *args, **kwargs):
        QtWidgets.QWidget.__init__(self, *args, **kwargs)
        self.setupUi(self)

class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
    def __init__(self, *args, **kwargs):
        QtWidgets.QMainWindow.__init__(self, *args, **kwargs)
        self.setupUi(self)
        self.actionaction.triggered.connect(self.add_devices)

    def add_devices(self):
        w = DevicesForm(self)
        sub = self.mdiArea.addSubWindow(w)
        w.show()


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    w = MainWindow()
    w.show()
    sys.exit(app.exec_())

PyQt5 - 单击菜单选项后在MDI区域中打开小组件

2 个答案: