[英]PySimpleGUI: Get selected value in OptionMenu
Using PySimpleGUI in Python, I have a window that has an OptionMenu element, which is basically a TKinter pimped combobox. Using PySimpleGUI in Python, I have a window that has an OptionMenu element, which is basically a TKinter pimped combobox. I want to retrieve the currently selected element.我想检索当前选定的元素。
Having this OptionMenu:有这个选项菜单:
sg.OptionMenu(default_value ='Live',values=('Live', 'Frozen', 'Delayed'),key='-MARKETDATA-')
Typically you would use this to get the selected menu item:通常,您会使用它来获取选定的菜单项:
print(window['-MARKETDATA-'].get())
except that the OptionMenu class does not have a.get() method.除了 OptionMenu class 没有 a.get() 方法。
I can get the selected menu item by using:我可以使用以下方法获取选定的菜单项:
event2, values2 = window.Read(timeout=1)
print(values2['-MARKETDATA-'])
but that hardly seems elegant.但这似乎并不优雅。 Is there another more straightforward way that I overlooked?我忽略了另一种更直接的方法吗?
There's no option enable_events
in sg.OptionMenu
, and also no method get
defined. sg.OptionMenu
中没有选项enable_events
,也get
定义方法。 Here I enable event for it by trace
and also get selected value by values[key]
.在这里,我通过trace
为其启用事件,并通过values[key]
获取选定的值。
import PySimpleGUI as sg
def callback(var, index, mode):
"""
For OptionMenu
var - tkinter control variable.
index - index of var, '' if var is not a list.
mode - 'w' for 'write' here.
"""
window.write_event_value("Language", window['Language'].TKStringVar.get())
sg.theme("DarkBlue3")
sg.set_options(font=("Courier New", 16))
data = ["Arabic", "Chinese", "English", "German", "Japanese", "Latin", "Spanish"]
layout = [
[sg.OptionMenu(data, default_value=data[2], key='Language')],
[sg.Button("Click")],
]
window = sg.Window('Title', layout, finalize=True)
window['Language'].TKStringVar.trace("w", callback)
while True:
event, values = window.read()
if event == sg.WINDOW_CLOSED:
break
elif event == 'Language':
print(event, values['Language'])
elif event == 'Click':
print(event, values['Language'])
window.close()
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