44 lines
1.4 KiB
Python
44 lines
1.4 KiB
Python
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import PySimpleGUI as sg
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"""
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Demo - Listbox Using Objects
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Several elements can take not just strings, but objects. The Listsbox is one of them.
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This demo show how you can use objects directly in a Listbox in a way that you can access
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information about each object that is different than what is shown in the Window.
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The important part of this design pattern is the use of the __str__ method in your item objects.
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This method is what determines what is shown in the window.
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Copyright 2022 PySimpleGUI
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"""
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class Item():
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def __init__(self, internal, shown):
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self.internal = internal
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self.shown = shown
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def __str__(self):
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return self.shown
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# make list of some objects
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my_item_list = [Item(f'Internal {i}', f'shown {i}') for i in range(100)]
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layout = [ [sg.Text('Select 1 or more items and click "Go"')],
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[sg.Listbox(my_item_list, key='-LB-', s=(20,20), select_mode=sg.LISTBOX_SELECT_MODE_EXTENDED)],
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[sg.Output(s=(40,10))],
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[sg.Button('Go'), sg.Button('Exit')] ]
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window = sg.Window('Listbox Using Objects', layout)
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while True:
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event, values = window.read()
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# print(event, values)
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if event == sg.WIN_CLOSED or event == 'Exit':
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break
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elif event == 'Go':
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print('You selected:')
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for item in values['-LB-']:
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print(item.internal)
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window.close()
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