Python GUIs: Dynamically Adding Rows of Widgets in PyQt6 — How to use QGridLayout to add multiple widgets per row at runtime

The useful part

I have a GUI where I dynamically add a QLineEdit for each image a user selects. Now I want to extend it so that each image gets a row of three text boxes — one for the filename, one for the width, and one for the height. Adding a single widget per action is straightforward enough, but when you need a whole row of widgets each time?

How it works

• In this tutorial, we'll walk through how to dynamically add rows of QLineEdit widgets using QGridLayout in PyQt6.
• Each time the user selects images, a new row appears with three text boxes: the filename, image width, and image height.
• We'll also look at how you can use a custom widget to group related fields together.
• How do I dynamically add multiple widgets horizontally for each new entry?
• If you've been using QVBoxLayout to stack widgets vertically, you've probably noticed that it only gives you one column.

What to take from it

To place multiple widgets side by side and keep adding new rows, you need a two-dimensional layout. QGridLayout lets you place widgets by specifying a row and column, which makes it perfect for building table-like arrangements dynamically. python layout.addWidget(some_widget, row, column) Each time you add a new file, you increment the row number and place your three widgets at columns 0, 1, and 2.

Details worth keeping

That's where QGridLayout becomes your best friend.