Unable to load UI

[vidyul]

I have the code below:

class type_select(QDialog):
    def __init__(self):
        super(type_select, self).__init__()
        loadUi('UI_1.ui', self)
        global t
        if self.HO.isChecked()==True:
            t=1
        elif self.Multi.isChecked()==True:
            t=2
        elif self.VT.isChecked()==True:
            t=3
        elif self.Fix.isChecked()==True:
            t=4
        else:
            t=0
        if t!=0:
            self.config.clicked.connect(self.config_func)
    
    def config_func(self):
        config_window=configuration_ui(t)
        widget.setFixedWidth(640)
        widget.setFixedHeight(600)
        widget.addWidget(config_window)
        widget.setCurrentIndex(widget.currentIndex()+1)

class configuration_ui(QDialog):
    def __init__(self, te):
        super(configuration_ui, self).__init__()
        loadUi('configuration.ui', self)
        tau=te

if __name__=='__main__':
    app=QApplication(sys.argv)
    type_selection=type_select()
    widget=QtWidgets.QStackedWidget()
    widget.addWidget(type_selection)
    widget.setFixedWidth(240)
    widget.setFixedHeight(320)
    widget.show()
    sys.exit(app.exec_())

it doesn't load the configuration ui.
what is the coding issue here?

[jsulm]

@vidyul said in Unable to load UI:

what is the coding issue here?

Well, I guess it can't find the ui file since you're using a relative path, which by default is relative to the current working directory of the running process.
Either put the ui file in a resource file or make sure it is deployed correctly together with your application and you're using a correct path to load it.

[vidyul]

@jsulm The file is in the same directory as other ui and files used in the code. Another method I used (suggested by chatgpt), works fine but not this. I didn't understand why though.

class type_select(QDialog):
    t=0
    def __init__(self, set_settings=None):
        super(type_select, self).__init__()
        loadUi('UI_1.ui', self)
        self.config.clicked.connect(self.config_func)
        self.HO.toggled.connect(self.update)
        self.Multi.toggled.connect(self.update)
        self.VT.toggled.connect(self.update)
        self.Fix.toggled.connect(self.update)
    
    def update(self):
        rb = self.sender()
        if rb.isChecked():
            self.config.setEnabled(True)
            if rb.text()=='HO':
                self.t=1
            elif rb.text()=="Multi":
                self.t=2
            elif rb.text()=="VT":
                self.t=3
            else:
                self.t=4
     def config_func(self):
            config_window=configuration_ui(self.t)
            widget.setFixedWidth(640)
            widget.setFixedHeight(640)
            widget.addWidget(config_window)
            widget.setCurrentIndex(widget.currentIndex()+1)

[JonB]

@vidyul said in Unable to load UI:

The file is in the same directory as other ui and files used in the code

So what? loadUi('UI_1.ui', self) tries to open a file named UI_1.ui in the process's current working directory. Have you checked what that is when your Python code is run? What does QFile.exists('UI_1.ui') return? Can you start by establishing what loadUi('UI_1.ui', self) returns/does, as I cannot find a doc page for this by Googling. Also --- and I may be mistaken about this --- I thought that loadUi() behaves differently between PyQt and PySide and I have not seen you mention which one you are using.

[jsulm]

@vidyul said in Unable to load UI:

The file is in the same directory as other ui and files used in the code

Doesn't change anything I wrote before.
Again: 'UI_1.ui' is a RELATIVE path - relative to current working directory.
Construct correct path to load the file...

[CristianMaureira]

(Try to avoid loadUi at all cost, and rely on generating a Python file out of it https://doc.qt.io/qtforpython-6/tutorials/basictutorial/uifiles.html#option-a-generating-a-python-class )