PySimpleGUI 2020: Part 4 – Update Windows to the Experimental Fastest Version

In this tutorial, we will be covering how to update windows in PySimpleGUI 2020, specifically focusing on the experimental fastest version. This feature is relatively new and can greatly improve the performance of your GUI applications.

Updating windows in PySimpleGUI involves refreshing the content of a window to reflect any changes in the data or user input. This can include updating text, images, buttons, and other elements within the window.

To update a window in PySimpleGUI, you can use the window[<element key>] syntax to access and modify individual elements within the window. You can then use the update() method to apply the changes to the window.

Here is a simple example that demonstrates how to update the text of a window in PySimpleGUI:

import PySimpleGUI as sg

layout = [
    [sg.Text("Initial Text", key="-TEXT-")],
    [sg.Button("Update Text")]
]

window = sg.Window("Update Window Example", layout)

while True:
    event, values = window.read()

    if event == sg.WINDOW_CLOSED:
        break
    elif event == "Update Text":
        window["-TEXT-"].update("Updated Text")

window.close()

In this example, we create a window with a text element that displays "Initial Text" and a button that triggers an update. When the button is clicked, the text element is updated to display "Updated Text".

Now, let’s talk about the experimental fastest version of updating windows in PySimpleGUI. This version leverages multi-threading to update elements within a window faster and more efficiently.

To use the experimental fastest version, you need to install the latest beta version of PySimpleGUI by running the following command:

pip install --upgrade PySimpleGUI --pre

Once you have installed the beta version, you can enable the experimental fastest version by setting the enable_caller_check parameter to True when creating the Window object. Here is an example:

window = sg.Window("Update Window Example", layout, enable_caller_check=True)

By enabling caller check, PySimpleGUI will perform additional checks to ensure that the correct thread is updating elements within the window, resulting in a faster and more reliable update process.

Keep in mind that the experimental fastest version is still in development and may not be suitable for all use cases. It is recommended to test this feature thoroughly before deploying it in a production environment.

Overall, updating windows in PySimpleGUI is a straightforward process, and the experimental fastest version offers a promising performance boost. Experiment with this feature in your projects and see how it can enhance the user experience of your GUI applications.

I hope this tutorial has been helpful in understanding how to update windows in PySimpleGUI 2020. If you have any questions or need further assistance, please feel free to ask. Happy coding!