Python qt load .ui file

This is possible thanks to the pyside6-uic tool. To use this tool, you need to run the following command on a console:. Now to use it, we should create a personalized class for our widget to setup this generated design. What is inside the if statement is already known from the previous examples, and our new basic class contains only two new lines that are in charge of loading the generated python class from the UI file:. You must run pyside6-uic again every time you make changes to the UI file.

The QUiLoader lets us load the ui file dynamically and use it right away:. Qt Designer is able to use user-provided custom widgets. Qt for Python provides a simple interface for this which is similar to registerCustomWidget.

To find the name of this class in the designer, click on a widget and look at the "Object Inspector" window to the right. In the image below you can see that the type of the widget named "input" is QLineEdit ; so I would then use QtWidgets. The method above simply helps you get a pointer to the object. Now that the hardest part is done, you are free to do what you would normally do after you have located all your widgets you want to use.

Please note, this is not a full tutorial on PyQt5. I am simply demonstrating how to import. To connect a button to a method, we need to get a pointer as shown before and then connect it like we normally would. Here is a full example:. To read inputs, I will use the button method from before to trigger an event and also get another pointer to the input widget.

Yes, at first it will be a lot of effort, but once you have set up all the pointers, you no longer need to worry about the GUI changing regarding you keep the names of widgets the same.

This is a small price to pay in 'overhead' for more smooth development later. How to Import a PyQt5. QApplication sys. QPushButton , 'printButton' Find the button self. Add a comment.

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While this works, it doesn't really show you how to hook up events or get anything useful out of the user interface. Frankly, I thought this was kind of a dumb example. So I looked up some other examples on other websites and eventually put the following together:.

Then we use the findChild method on the object that was returned from QUiLoader to extract the widget objects that we are interested in. Finally I connected the click event to an event handler or slot.