Скачать или смотреть How to Retrieve the Value of the Pressed Button in Custom QMessageBox with PyQt5

Learn how to manage QMessageBox in PyQt5 effectively and retrieve the value of the clicked button using a practical example.
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This video is based on the question https://stackoverflow.com/q/68592768/ asked by the user 'Roein Saba' ( https://stackoverflow.com/u/13773348/ ) and on the answer https://stackoverflow.com/a/68592956/ provided by the user 'eyllanesc' ( https://stackoverflow.com/u/6622587/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Managing QMessageBox in PyQt5: Retrieving Pressed Button Values

Creating a user-friendly interface is an essential aspect of software development, especially when handling user feedback. QMessageBox is a widely-used dialog in PyQt5 that allows developers to present messages and receive user responses through buttons. The challenge arises when you need to capture the value of the button pressed by the user. In this guide, we'll address this problem by providing a structured solution on how to achieve that.

The Problem

You're working on a project that requires creating custom message boxes using QMessageBox in PyQt5. You want to implement a function that not only initializes a message box with a title, text, and buttons but also retrieves the value of the button pressed by the user. Here's a quick overview of your current function structure:

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

Despite your efforts to connect the button click event to another function, you're struggling to access the value directly within your alert() function.

The Solution

To address the issue of capturing the clicked button's value, you can utilize the clickedButton() method from the QMessageBox class. This method returns the button that was clicked, allowing you to easily obtain its value. Below, I’ll break down the solution in detail.

Step 1: Initial Setup

Start by initializing your QMessageBox as intended in your custom function. Here is a refined version of your alert() function:

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

Step 2: Configuring the Message Box

Next, loop through the keyword arguments to set the title, text, and buttons for the message box:

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

Step 3: Executing and Capturing the Button Value

Now, execute the message box and use the clickedButton() method right after exec_() to get the value of the button that was clicked by the user:

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

Complete Code Example

Here’s how your complete function should look now:

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

Testing the Function

Finally, you can test the alert() function within your main application context:

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

When you run your application, the title, text, and buttons will be displayed in a message box, and the value of the pressed button will be printed to the console.

Conclusion

By implementing the clickedButton() method, you've successfully resolved the issue of retrieving the clicked button's value in your custom QMessageBox. This method enhances the interactivity of your application and helps build a better user experience. Incorporating such features can lead to more intuitive software that meets user expectations.

Happy coding with PyQt5! If you have any further questions or require additional help, feel free to ask!