使用键盘输入（左/右箭头）在 PySimpleGUI 中切换 window

Question

就 sg.Frame 而言，我有 3 个 windows，我想通过键盘输入切换 windows。 然而，window 在按钮工作正常时没有响应。

layout = [
            [
                sg.Column(layout1, key='-COL1-'), # layoutX is a page interms of sg.Frame
                sg.Column(layout2, visible=False, key='-COL2-'),
                sg.Column(layout3, visible=False, key='-COL3-')
            ],
            [
            #     sg.Button('Cycle Layout'),
                sg.Button('-PREV-'),
                sg.Button('1'),
                sg.Button('2'),
                sg.Button('3'),
                sg.Button('-NEXT-'),
            #     sg.Button('Exit')
            ]
        ]

window = sg.Window('Swapping the contents of a window', layout) #, size = (1024, 800)

layout = 1  # The currently visible layout

while True:
    event, values = window.read()
    print(event, values)
    if event in (None, 'Exit'):
        break

    window.bind('<Right>', '-NEXT-')
    window.bind('<Left>', '-PREV-')
    window.bind('<Down>', 'Exit')

    if event == '-NEXT-' and layout < 3:
        window[f'-COL{layout}-'].update(visible=False)
        layout = layout + 1
        window[f'-COL{layout}-'].update(visible=True)

    elif event == '-PREV-' and layout > 1:
        window[f'-COL{layout}-'].update(visible=False)
        layout -= 1
        window[f'-COL{layout}-'].update(visible=True)

    elif event in '123':
        window[f'-COL{layout}-'].update(visible=False)
        layout = int(event)
        window[f'-COL{layout}-'].update(visible=True)

window.close()

我该如何修改？ 非常感谢！

Answer 1

绑定键盘的语句应该放在 window 完成之后和你的事件循环之前，然后它会在你的事件循环开始之前工作。

window = sg.Window('Swapping the contents of a window', layout, finalize=True) #, size = (1024, 800)

window.bind('<Right>', '-NEXT-')
window.bind('<Left>', '-PREV-')
window.bind('<Down>', 'Exit')