topic Trouble loading Qt ui file in 3ds Max Programming Forum

Trouble loading Qt ui file

Anonymous — Wed, 04 Nov 2020 16:29:10 GMT

Hey all,

I'm trying to load a Qt ui file through python in Max, but it's not working for me. I'm following thi example I found in the docs...

http://help.autodesk.com/view/MAXDEV/2021/ENU/?guid=Max_Python_API_creating_python_uis_html

(scroll down to Loading Qt UI Files) (code pasted below as well)

I made sure to create a 'test.ui' file with a QPushButton named 'pushButton' so that I could test the example as simply as possible. However, when I run this code I do not see the UI I created in Qt Designer. Instead I just see an empty panel. I'd be grateful for anyone who can point out where I'm going wrong.

Many thanks.

import os from PySide2.QtWidgets import QVBoxLayout from PySide2.QtWidgets import QWidget from PySide2.QtWidgets import QDialog from PySide2.QtWidgets import QPushButton from PySide2.QtCore import QFile from PySide2.QtUiTools import QUiLoader from pymxs import runtime as rt class TestDialog(QDialog): def __init__(self, parent=QWidget.find(rt.windows.getMAXHWND())): QDialog.__init__(self, parent) loader = QUiLoader() ui_file_path = os.path.join( os.path.dirname(os.path.realpath(__file__)), 'test_ui.ui') ui_file = QFile(ui_file_path) ui_file.open(QFile.ReadOnly) self.ui = loader.load(ui_file, self) ui_file.close() layout = QVBoxLayout() layout.addWidget(self.ui) self.setLayout(layout) btn = self.ui.findChild(QPushButton, 'pushButton') btn.clicked.connect(self.makeTeapot) def makeTeapot(self): rt.teapot() rt.redrawViews() def main(): dlg = TestDialog() dlg.show() if __name__ == '__main__': main()

Re: Trouble loading Qt ui file

Anonymous — Wed, 04 Nov 2020 18:26:16 GMT

OK, figured out what I was doing wrong. I created my ui file as a QDialog. By making a ui file as a QWidget, this works as expected. Oh the process of learning...

Re: Trouble loading Qt ui file

Anonymous — Tue, 31 Aug 2021 03:43:04 GMT

Hi, I might have the same issue like yours when I try to load ui file in 3ds max, kinda new, just don't understand what is "making ui file as a QWidget", can you explain more about it ? pls...

Re: Trouble loading Qt ui file

Luna_Gu98 — Tue, 16 May 2023 12:27:33 GMT

I got the same problem. I believe @Anonymous was saying when creating a ui file in Qt Designer, you have to choose "Widget" instead of any other templates at the very first. I solved the problem by changing my
"Main Window" ui file to "Widget" 🙂