tkinter python中的numpad

Question

我试图将numpad链接到Python代码中的entry字段，但我无法让它工作。我希望有人能帮我这个忙。提前感谢！

我的代码

import tkinter as tk
from PIL import ImageTk
from PIL.ImageTk import PhotoImage
from tkinter import Button


# background

FILENAME = 'C:\Volledig Project\Sealapparaat-800x480.jpg'
root = tk.Tk()
canvas = tk.Canvas(root, width=800, height=480)
canvas.pack()
tk_img = ImageTk.PhotoImage(file=FILENAME)
canvas.create_image(400, 240, image=tk_img)


entry1 = tk.Entry(root)
entr1_windows = canvas.create_window(30, 300, anchor="nw", window=entry1)

muted3 = False


def mute_picture():
    global muted3
    if muted3:
        volumeKnop3.configure(image=volumePhoto3)
        muted3 = False
        root.after(int(entry1.get()), mute_picture)
    else:
        volumeKnop3.configure(image=mutePhoto3)
        muted3 = True

root.after(0, mute_picture)


mutePhoto3 = PhotoImage(file="C:\Volledig Project\Time_Done.png")
volumePhoto3 = PhotoImage(file="C:\Volledig Project\Time_Not_Done.png")

volumeKnop3 = Button(image=volumePhoto3, command=mute_picture, background="white", activebackground="White", border=0)
volumeKnop3_window = canvas.create_window(30, 200, anchor="nw", window=volumeKnop3)

root.mainloop()

我已经找到并尝试了几个数字，但我无法工作，所以我希望有人有一个好的数字垫，并知道如何在我的代码中实现它。

Answer 1

这是我几年前为Raspberry Pi触摸屏应用程序编写的一个numpad示例。它可以工作(不过，我现在可以改进代码)。

单击输入字段以打开Numpad。要使它在代码中工作，请将entry1实例tk.Entry替换为MyNumpadEntry。应该就这么简单。例如

entry1 = NumpadEntry(root)

编辑:为添加enumerate_row_column生成器所做的轻微更改。以前的做法并不是很合奏。

from tkinter import *
from tkinter import simpledialog

def enumerate_row_column(iterable, num_cols):
    for idx, item in enumerate(iterable):
        row = idx // num_cols
        col = idx % num_cols
        yield row,col,item

class NumpadEntry(Entry):
    def __init__(self,parent=None,**kw):
        Entry.__init__(self,parent,**kw)
        self.bind('<FocusIn>',self.numpadEntry)
        self.bind('<FocusOut>',self.numpadExit)
        self.edited = False
    def numpadEntry(self,event):
        if self.edited == False:
            print("You Clicked on me")
            self['bg']= '#ffffcc'
            self.edited = True
            new = numPad(self)
        else:
            self.edited = False
    def numpadExit(self,event):
        self['bg']= '#ffffff'

class numPad(simpledialog.Dialog):
    def __init__(self,master=None,textVariable=None):
        self.top = Toplevel(master=master)
        self.top.protocol("WM_DELETE_WINDOW",self.ok)
        self.createWidgets()
        self.master = master
        
    def createWidgets(self):
        btn_list = ['7',  '8',  '9', '4',  '5',  '6', '1',  '2',  '3', '0',  'Close',  'Del']
        # create and position all buttons with a for-loop
        btn = []
        # Use custom generator to give us row/column positions
        for r,c,label in enumerate_row_column(btn_list,3):
            # partial takes care of function and argument
            cmd = lambda x = label: self.click(x)
            # create the button
            cur = Button(self.top, text=label, width=10, height=5, command=cmd)
            # position the button
            cur.grid(row=r, column=c)                                              
            btn.append(cur)
            
    def click(self,label):
        print(label)
        if label == 'Del':
            currentText = self.master.get()
            self.master.delete(0, END)
            self.master.insert(0, currentText[:-1])
        elif label == 'Close':
            self.ok()
        else:
            currentText = self.master.get()
            self.master.delete(0, END)
            self.master.insert(0, currentText+label)
    def ok(self):
        self.top.destroy()
        self.top.master.focus()

class App(Frame):
    def __init__(self,parent=None,**kw):
        Frame.__init__(self,parent,**kw)
        self.textEntryVar1 = StringVar()
        self.e1 = NumpadEntry(self,textvariable=self.textEntryVar1)
        self.e1.grid()

        self.textEntryVar2 = StringVar()
        self.e2 = NumpadEntry(self,textvariable=self.textEntryVar2)
        self.e2.grid()


if __name__ == '__main__':
    root = Tk()
    root.geometry("200x100")
    app = App(root)
    app.grid()
    root.mainloop()