python tkinter combobox/button

Question

我剛開始使用python和tkinter，我創建了一個包含兩個不同選項'SPMI'和'RFFE'的兩個組合框和'run'按鈕。我想我的腳本要做的是，當我選擇不同的選項並點擊「運行」時，它應該運行SPMI.py或RFFE.py文件。

請幫助，感謝

我的代碼：

import sys 
from Tkinter import * 



def callback1(): 
    os.system('SPMI.py') 

def callback2(): 
    os.system('RFFE.py') 

class MyOptionMenu(OptionMenu): 
    def __init__(self, master, status, *options): 
      self.var = StringVar(master) 
      self.var.set(status) 
      OptionMenu.__init__(self, master, self.var, *options) 
      self.config(font=('calibri',(10)),bg='white',width=12,fg='dark red') 
      self['menu'].config(font=('calibri',(10)),bg='white',fg='dark blue') 

      b1_1 = Button(Dragonfly, text = "Run", fg='blue',command=callback1) 
      b1_1.place(x=85,y=150) 


     b2_2= Button(Dragonfly, text = "Run", fg='blue',command=callback2) 
     b2_2.place(x=275,y=150) 


Dragonfly = Tk() 
Dragonfly.geometry('400x400+400+300') 
Dragonfly.title('Dragonfly') 
mainlabel = Label(text='Dragonfly Trigger Test',font=('calibri',(14)),fg='dark blue').pack() 


mymenu1 = MyOptionMenu(Dragonfly, 'Select Protocol', 'SPMI','RFFE') 
mymenu2 = MyOptionMenu(Dragonfly, 'Select Protocol', 'SPMI','RFFE') 
mymenu1.place(x=40,y=100) 
mymenu2.place(x=230,y=100) 
m1label = Label(text='Frame Trigger',font=('calibri',(12)),fg='dark green').place(x=57,y=60) 
m1labe2 = Label(text='External Trigger',font=('calibri',(12)),fg='dark green').place(x=240,y=60) 

Dragonfly.mainloop() 

Answer 1

使用self.var.get()獲得組合框的值。 然後，您可以在回調中使用該值，以使回調的行爲取決於組合框的設置。

---

import sys 
from Tkinter import * 
import subprocess 

class MyOptionMenu(OptionMenu): 
    def __init__(self, master, status, *options): 
     self.var = StringVar(master) 
     self.var.set(status) 
     OptionMenu.__init__(self, master, self.var, *options) 
     self.config(
      font=('calibri', (10)), bg='white', width=12, fg='dark red') 
     self['menu'].config(font=('calibri', (10)), bg='white', fg='dark blue') 

    def callback(self): 
     val = '{}.py'.format(self.var.get()) 
     print(val) 
     # subprocess.call([val]) 

Dragonfly = Tk() 
Dragonfly.geometry('400x400+400+300') 
Dragonfly.title('Dragonfly') 
mainlabel = Label(text='Dragonfly Trigger Test', font=('calibri', (14)), 
        fg='dark blue').pack() 

mymenu1 = MyOptionMenu(Dragonfly, 'Select Protocol', 'SPMI', 'RFFE') 
b1_1 = Button(Dragonfly, text="Run", fg='blue', command=mymenu1.callback) 
b1_1.place(x=85, y=150) 

mymenu2 = MyOptionMenu(Dragonfly, 'Select Protocol', 'SPMI', 'RFFE') 
b2_2 = Button(Dragonfly, text="Run", fg='blue', command=mymenu2.callback) 
b2_2.place(x=275, y=150) 

mymenu1.place(x=40, y=100) 
mymenu2.place(x=230, y=100) 
m1label = Label(text='Frame Trigger', font=('calibri', (12)), 
       fg='dark green').place(x=57, y=60) 
m1labe2 = Label(text='External Trigger', font=('calibri', (12)), 
       fg='dark green').place(x=240, y=60) 

Dragonfly.mainloop() 

---

順便說，構建一個GUI與place容易在第一，但繁瑣到底。首先，隨着它的增長，變更佈局變得越來越難，因爲插入一個新的小部件往往需要擺弄遍佈各地的硬編碼座標。另一個問題是小部件佈局無法適應窗口大小的變化。

由於這些原因，人們傾向於使用pack或grid佈局控件：

import sys 
import Tkinter as tk 
import subprocess 

class MyOptionMenu(tk.OptionMenu): 
    def __init__(self, master, status, *options): 
     self.var = tk.StringVar(master) 
     self.var.set(status) 
     tk.OptionMenu.__init__(self, master, self.var, *options) 
     self.config(
      font=('calibri', (10)), bg='white', width=12, fg='dark red') 
     self['menu'].config(font=('calibri', (10)), bg='white', fg='dark blue') 

    def callback(self): 
     val = '{}.py'.format(self.var.get()) 
     print(val) 
     # subprocess.call([val]) 

Dragonfly = tk.Tk() 
Dragonfly.geometry('400x400+400+300') 
Dragonfly.title('Dragonfly') 
Dragonfly.columnconfigure(0, weight=1) 
Dragonfly.columnconfigure(1, weight=1) 
mainlabel = tk.Label(text='Dragonfly Trigger Test', font=('calibri', (14)), 
        fg='dark blue').grid(row=0, column=0, columnspan=2, pady=20) 

mymenu1 = MyOptionMenu(Dragonfly, 'Select Protocol', 'SPMI', 'RFFE') 
mymenu1.grid(row=2, column=0, pady=10, padx=10,) 
b1_1 = tk.Button(Dragonfly, text="Run", fg='blue', command=mymenu1.callback) 
b1_1.grid(row=3, column=0, pady=10, padx=10,) 

mymenu2 = MyOptionMenu(Dragonfly, 'Select Protocol', 'SPMI', 'RFFE') 
mymenu2.grid(row=2, column=1, pady=10, padx=10,) 
b2_2 = tk.Button(Dragonfly, text="Run", fg='blue', command=mymenu2.callback) 
b2_2.grid(row=3, column=1, pady=10, padx=10,) 

m1label = tk.Label(text='Frame Trigger', font=('calibri', (12)), 
       fg='dark green').grid(row=1, column=0, pady=10, padx=10,) 
m1labe2 = tk.Label(text='External Trigger', font=('calibri', (12)), 
       fg='dark green').grid(row=1, column=1, pady=10, padx=10,) 

Dragonfly.mainloop()