48 lines
1.6 KiB
Python
48 lines
1.6 KiB
Python
import PySimpleGUI as sg
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"""
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Demo - "Pinning" an element into a location in a layout
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When using the tkinter port of PySimpleGUI, if you make an element invisible and then visible again,
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rather than the element appearing where it was originally located, it will be moved to the bottom
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of whatever it was contained within (a window or a container element (column, frame, tab))
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This demo adds a function "pin" which will place the element inside of a Column element. This will
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reserve a location for the element to be returned.
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For other ports of PySimpleGUI such as the Qt port, the position is remembered by Qt and as a
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result this technique using Columns is not needed.
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Copyright 2020 PySimpleGUI.org
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"""
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def pin(elem):
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'''
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Pin's an element provided into a layout so that when it's made invisible and visible again, it will
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be in the correct place. Otherwise it will be placed at the end of its containing window/column.
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:param elem: the element to put into the layout
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:return: A column element containing the provided element
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'''
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return sg.Column([[elem]], pad=(0,0))
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layout = [ [sg.Text('Window with Hidden Button')],
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[sg.Input(key='-IN-')],
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[pin(sg.Button('Button1')), pin(sg.Button('Button2')), sg.B('Button3')],
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]
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window = sg.Window('Window Title', layout)
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toggle = False
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while True: # Event Loop
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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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window['Button2'].update(visible=toggle)
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toggle = not toggle
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window.close()
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