#Python – Context Meny and Key Press with #PySimpleGUI

Hi !

After my base sample code for a GUI app, now it’s time to add some interaction features:

• Context Menu
• Capture Key Press

In the following example, I’m adding a context menu with the following elements:

This can be done as part of the window definition, in example

right_click_menu = ['Unused', ['&FPS', '---', 'Menu A', 'Menu B', 'Menu C', ['Menu C1', 'Menu C2'], '---', 'Exit']]

window    = sg.Window("El Bruno - Webcams and GrayScale with PySimpleGUI", layout, 
                    right_click_menu=right_click_menu,
                    no_titlebar=False, alpha_channel=1, grab_anywhere=False, 
                    return_keyboard_events=True, location=(100, 100))      

The menu definition and how to create submenus, separators, quick access keys and more are part of the PySimpleGUI documentation.

And then, in order to capture events in the window, we need to check the events read in each loop of the while. The following sample, check the window events

• Close the Window is the user press the [X] to close the window, or click the [Exit] element on the context menu
• Change the value of a boolean var if the user press the key [F] , or click the [FPS] element on the context menu

    # process windows events
    event, values = window.read(timeout=20)
    if event == sg.WIN_CLOSED or event == "Exit":
        break
    if event == "f" or event == "F" or event == "FPS":
        display_fps = not display_fps

The full code:

Resources

• GitHub, PySimpleGUI
• PySimpleGUI, Read the Docs