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Asked:2022-03-21 01:51:00 +0000 UTC2022-03-21 01:51:00 +0000 UTC

Tkinter. 从 OptionMenu 获取数据，然后将其存储在变量中

  • 772

需要帮助...有必要从 OptionMenu 中获取有关所选参数（PORT、BAUDRATE）的数据并将其写入变量，以便稍后在此行中使用它

board = Arduino("115200", port=("COM5"))

这是相关的代码片段

import serial.tools.list_ports
import tkinter
from tkinter import *
from Arduino import Arduino
import time


ports = serial.tools.list_ports.comports()
for port, desc, hwid in sorted(ports):
    port


board = Arduino("115200", port=("COM5"))


head = Tk()

head.geometry('500x300')
head.title('Лаунчер')
head.resizable(width = False,height = False)
head.wm_attributes('-alpha',0.95)

def WinSon():
    head.withdraw()
    win = Toplevel()
    win.geometry('800x500')
    win.title('Набор')
    win.protocol("WM_DELETE_WINDOW", lambda: head.destroy())
    win.mainloop()


canvas = Canvas(head,width = 500,height = 300)
canvas.pack()
frame = Frame(head)
frame.place(relwidth = 1,relheight = 1)


t_p = Label(frame, text='ПОРТ', bg='#A52A2A')
t_p.place(x=65, y=150, width=150, height=30)
PortList = ['Выберите порт', port]
var_p = StringVar(frame)
var_p.set(PortList[0])
opt_p = OptionMenu(frame, var_p, *PortList)
opt_p.place(x=65, y=180, width=150, height=30)


t_bd = Label(frame,text = 'БОДРЕЙТ',bg = '#A52A2A')
t_bd.place(x = 285,y = 150,width = 150,height = 30)
BaudList = ['Выберите скорость',9600,19200,38400,57600,115200]
var_bd = StringVar(frame)
var_bd.set(BaudList[0])
opt_bd = OptionMenu(frame, var_bd, *BaudList)
opt_bd.place(x = 285,y = 180,width = 150,height = 30)


Redo_Button = Button(frame,text = 'Далее',font = ("lucida console", 20,),command = WinSon)
Redo_Button.place(x = 192.5,y = 230)


head.mainloop()
python

1 个回答

  1. Best Answer

    要从您的价值中获取价值，StringVar请使用该方法.get()

    例如，要从中获取值，var_bd = StringVar()需要编写以下命令：

    >>> var_bd.get()
19200  # текущее значение в дропдауне, который вы определили.

    您的功能永远不会相同：

    def WinSon():
    print(var_bd.get())  # новая строчка.
    head.withdraw()
    win = Toplevel()
    win.geometry('800x500')
    win.title('Набор')
    win.protocol("WM_DELETE_WINDOW", lambda: head.destroy())
    win.mainloop()
    • 0

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