Question

我正在尝试使用python和tkinter重新创建桌面游戏垄断。我知道如何在画布或框架上放置标签，但是如何从类中的另一个函数运行此命令？我在类Board中使用了一些函数尝试了它，但随后出现了错误，标签，画布等未定义为__init__(self,parent)中发生的情况。我该如何解决这些错误？或者我应该采取不同的方法吗？希望我明白我的问题。

import tkFileDialog
from random import randint

class Board(Frame):
    def __init__(self,parent):


        ##create the board
        frame = Frame(parent)
        frame.pack()
        Frame.__init__(self,parent)

        frame2 = Frame(frame)
        frame2.pack()

        c=Canvas(frame2,width=480,height=480)
        c.pack(expand=YES,fill=BOTH)
        c.background=PhotoImage(file='Board.gif')
        c.create_image(0,0,image=c.background,anchor='nw')

        ##Add player 1
        player1=PhotoImage(file='plane.gif')
        label_player1 = Label(c,image=player1)
        label_player1.image=player1
        label_player1.place(x=430,y=420)

        ##Add player 2
        player2=PhotoImage(file='car.gif')
        label_player2 = Label(c,image=player2)
        label_player2.image=player2
        label_player2.place(x=430,y=450)

        button = Button(frame, text="Next turn", command=self.next_turn)
        button.pack()

        button = Button(frame, text="Roll the dice", command=self.roll)
        button.pack()

    def roll(self):
        number=randint(2,12)
        if b==0:
            self.place_player_down()
        return number

    def place_player_down(self):

        for i in range(number+1):
            h=int(430-i*30)
            while h>=0:
                player2=PhotoImage(file='car.gif')
                label_player2 = Label(c,image=player2)
                label_player2.image=player2
                label_player2.place(x=h,y=420)

root = Tk()
board = Board(root)
board.pack()
root.mainloop()

Answer 1

方法是正确的（将Tkinter小部件包装在一个以事件处理函数作为方法的类中），但是您忘记使用对self的引用将小部件设置为类的属性：

class Board(Frame):
    def __init__(self,parent):
        # ...
        self.c = Canvas(frame2,width=480,height=480)
        self.c.pack(expand=YES,fill=BOTH)
        # ...

    def place_player_down(self):
        # Use 'self.c', not just 'c'

我认为您希望使用值number执行类似的操作，但在这种情况下，我会将其作为参数发送到place_player_down：

def roll(self):
    number=randint(2,12)
    if b==0:
        self.place_player_down(number)
    return number  # Keep in mind that this value is returned but not used anymore

def place_player_down(self, number):
    # Use 'number'

使用button命令移动tkinter标签

1 个答案: