Скачать или смотреть How to Successfully Display Multiple Images in a Single Tkinter Window

Learn how to resolve the issue of not being able to display multiple images in a Tkinter window by managing image references correctly.
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This video is based on the question https://stackoverflow.com/q/72932849/ asked by the user 'Giannis Tsakas' ( https://stackoverflow.com/u/19136755/ ) and on the answer https://stackoverflow.com/a/72933010/ provided by the user 'acw1668' ( https://stackoverflow.com/u/5317403/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Displaying Multiple Images in a Tkinter Window: A Quick Guide

Tkinter is a powerful library in Python that allows for the creation of graphical user interfaces (GUIs). One common challenge developers encounter while working with Tkinter is the inability to display multiple images in a single window. This guide aims to explore the problem and provide a clear, step-by-step solution.

The Problem: Images Not Rendering Properly

When attempting to load multiple images in a Tkinter window, you may find that only the last image appears. This problem often occurs because you might be using a single variable to store the image references. As a result, the earlier images get garbage collected and disappear from your window.

Example Scenario

Let's take a look at a common code snippet that should load two images:

[[See Video to Reveal this Text or Code Snippet]]

In this code, only the last image (i.e., second.bmp) is displayed. The first image (first.bmp) does not appear in the window because the variable myimg is being overwritten in each iteration of the loop, leading to garbage collection of the previously stored image.

The Solution: Manage Image References

To resolve this issue and successfully display multiple images, you need to ensure that each image is referenced correctly and not overwritten. Here's a revised version of the initial code that achieves this:

[[See Video to Reveal this Text or Code Snippet]]

Key Improvements:

Use of lbl.image: By assigning the image reference to the lbl.image attribute of the Label, the garbage collector retains the reference to the image, preventing it from being cleaned up.

Correct Placement: Each label is now correctly positioned vertically using the ycord variable, allowing multiple images to be displayed in the window.

Conclusion

By managing image references correctly, you can effortlessly display multiple images in a Tkinter window. This adjustment not only improves the functionality of your application but also enhances user experience through visual variety. Next time you face a similar challenge, remember to check how you are handling your image references!

Happy coding!