Embed form .ui file made with Qt Designer into a QFrame of a dialog window made with QtDesigner

[Ernest]

Hello. I'm currently working on a Python project where I will have a main dialog window with a frame in it. In this frame, I could insert one of many different forms (which I'm designing in Qt Designer) depending on the situation. Is there a way to create separate .ui files for each of these forms and embed them into the frame of the main dialog window?
Thanks

[JonB]

@Ernest
Easiest way: If you are using your pyuic to generate a Python class from the .ui file you have a QWidget-derived class. You create an instance dynamically and add it onto your dialog window's frame or wherever.

[Ernest]

Great. How do I dynamically add it into my dialog window's frame?

[JonB]

@Ernest
Well I don't know exactly what your ".dialog window's frame" is. You can add what you have designed wherever you can add any QWidget. Your generated code for some foo.ui file will give you a

class Foo(QWidget):

so e.g. you can go:

foo = Foo()
dialog.layout.addWidget(foo)

as appropriate wherever you want it. The point being, if you could do it with a widget from code, you can do it from a widget designed in Designer, which is what you asked about.

[Ernest]

Thanks! To be more specific, my main window is a QDialog, the frame I'm trying to add a form to is a QFrame inside of said dialog, and the form I'm trying to embed that was created with Qt Designer is also a QFrame.
Unfortunately, I couldn't get your code to work. "layout" appears to be a method, and thus has no "addWidget" attribute. I then tried calling the method instead with

dialog.layout().addWidget(foo)

But layout() appears to return None since I get "AttributeError: 'NoneType' object has no attribute 'addWidget'"

I tried doing the same, to the frame object itself, ie

dialog.frame.layout().addWidget(foo)
dialog.frame.layout.addWidget(foo)

Same results.

[Ernest]

I made some progress. I fixed the issue where layout() was returning "None" by doing

dialog.frame.setLayout(QHBoxLayout())

Then

dialog.frame.layout().addWidget(foo)

Now it doesn't throw an error but the form I made also doesn't appear in the frame at all. It's still empty.

[JonB]

@Ernest said in Embed form .ui file made with Qt Designer into a QFrame of a dialog window made with QtDesigner:

Unfortunately, I couldn't get your code to work.

It was showing you what you needed to do, not code to copy, hence "as appropriate". Since we don't even know what you've put in your dialog we couldn't give you exact code if we wanted to.

[Ernest]

@JonB Like I said, it's just a

class SomeDialog(QtWidgets.QDialog)

containing a QFrame element.
The form I'm trying to embed into this dialog is a

class SomeFrame(QtWidgets.QFrame)

with some buttons in it. I had already instantiated this frame with

foo = SomeFrame()

I managed to get

dialog.frame.layout().addWidget(foo)

to work but the dialog's frame still appears empty. Is there any other information you need?

[StephvanS]

Has anyone had success with this?
I have a tabwidget on a MainWindow.
Inside the tabs I want to instantiate different forms I created and converted to python.
I can get the individual forms to render IF I don't use the tabwidget.

[SGaist]

@StephvanS Hi and welcome to devnet,

The likely problem that was discussed here is that frame was neither shown nor added to a layout applied to dialog.

As for your issue, you should open your own thread showing your code.