从另一个类方法引用类对象

Question

所以，我有这个 GUI 可以创建一个带有按钮的大空框架，单击该按钮将调用一个函数（方法？），该函数（方法？）在（不同的类）内生成一个较小的框架，带有输入字段，以及在较小的框架下创建一个重复的 Button 以一遍又一遍地重复该过程，用较小的框架填充 GUI。每个小框架都配有一个“删除”按钮，它会破坏小框架本身......我的问题是我也希望它破坏它下面的按钮，它是由不同类中的方法生成的（大的类框架）。我似乎无法让'delete_aircraft'函数破坏按钮......我已经注释掉了delete_aircraft函数的那一行，因为我知道在这种情况下引用'self'是不正确的。当“newaircraft”按钮由不同类中的方法创建时，如何摆脱它的每个实例？

基本上我想把'addnew'函数的操作倒过来。

代码如下：

class Fleet_Creation(tk.Frame):
    def __init__(self, *args, **kwargs):
        tk.Frame.__init__(self, width=1000, height=700, bg='grey80', relief='ridge', bd=3)
        fleet_title=tk.Label(text='Fleet Creation Module', font='arial 20 bold', bg='grey80', justify='center')
        fleet_title.place(anchor='nw', x=350, y=5)
        self.newaircraft = tk.Button(text='Add New Aircraft...', font='arial 15', relief='raised', bd=3, bg='SteelBlue1', command=self.addnew)
        self.newaircraft.place(anchor='nw', x=78, y=45)

    def addnew(self):
        xcoord = self.newaircraft.winfo_x()
        ycoord = self.newaircraft.winfo_y()
        self.newaircraft.destroy()
        addnewframe = New_Aircraft(Fleet_Creation)
        if ycoord<600:
            addnewframe.place(anchor='nw', x=(xcoord-80), y=ycoord)
            self.newaircraft = tk.Button(text='Add New Aircraft...', font='arial 15', relief='raised', bd=3, bg='SteelBlue1', command=self.addnew)
            self.newaircraft.place(anchor='nw', x=(xcoord), y=(ycoord+100))
        elif ycoord>=600:
            addnewframe.place(anchor='nw', x=(xcoord+253), y=(ycoord-ycoord+47))
            self.newaircraft = tk.Button(text='Add New Aircraft...', font='arial 15', relief='raised', bd=3, bg='SteelBlue1', command=self.addnew)
            self.newaircraft.place(anchor='nw', x=(xcoord+333), y=(ycoord-ycoord+148))
        elif xcoord > 800:
            self.newaircraft.destroy()


class New_Aircraft(tk.Frame):
    def __init__(self, master):
        tk.Frame.__init__(self, width=333, height=100, bg='grey60', relief='ridge', bd=5 )
        n_number=tk.Label(self, text='N-Number:', font='arial 10 bold', bg='grey60')
        n_number.place(anchor='nw', x=3, y=3)
        n_number_entry=tk.Entry(self, font='arial 10 bold', relief='sunken', bd=2, width=7)
        n_number_entry.place(anchor='nw', x=75, y=3)
        type=tk.Label(self, text='Aircraft Type(ICAO):', font='arial 10 bold', bg='grey60')
        type.place(anchor='nw', x=135, y=3)
        type_entry=tk.Entry(self, font='arial 10 bold', width=7, relief='sunken', bd=2)
        type_entry.place(anchor='nw', x=265, y=3)
        aircraft_category = ['CATEGORY...','AIRPLANE','ROTORCRAFT']
        aircraft_class = ['CLASS...','ASEL', 'ASES', 'AMEL', 'AMES']
        aircraft_type = ['TYPE...','JET', 'TURBINE', 'RECIPROCATING', 'GLIDER']
        accat = tk.StringVar()
        accls = tk.StringVar()
        actype = tk.StringVar()
        Category = tk.OptionMenu(self, accat, 'AIRPLANE', 'ROTORCRAFT')
        Class = tk.OptionMenu(self, accls, 'ASEL', 'ASES', 'AMEL', 'AMES')
        Type = tk.OptionMenu(self, actype, 'JET', 'TURBINE', 'RECIPROCATING', 'GLIDER')
        Category.place(anchor='nw', x=2, y=40)
        Class.place(anchor='nw', x=117, y=40)
        Type.place(anchor='nw', x=205, y=40)
        Category.config(bg='grey60', font='arial 8 bold', bd=0)
        Class.config(bg='grey60', font='arial 8 bold', bd=0)
        Type.config(bg='grey60', font='arial 8 bold', bd=0)
        accat.set('CATEGORY...')
        accls.set('CLASS...')
        actype.set('TYPE...')
        h1 = tk.Label(self, font='arial 1', bg='grey60', relief='sunken', width=315)
        h1.place(anchor='nw', x=0, y=28)
        self.addbutton=tk.Button(self, text='ADD', height=2, font='arial 10', bg='DodgerBlue2', command=self.add)
        self.addbutton.place(anchor='nw', x=283, y=40)
        self.delete = tk.Button(self, text='DELETE', font='arial 7 bold', bg='red', width=30, justify='center', command=self.delete_aircraft)
        self.delete.place(anchor='nw',x=45,y=69)


    #create function to render addbutton disabled
    def add(self):
        self.addbutton.config(state='disabled')
        #other stuff

    def delete_aircraft(self):
        self.destroy()
        #destroy 'newaircraft' button created by the addnew function
        #self.newaircraft.destroy()

Answer 1

只要您使用place 算法来组织您的小部件，您并不真正关心小部件引用的存储位置。除了将 Button 存储为self.newaircraft（即存储为FleetCreation 实例的属性）之外，您还可以将其存储为addnewframe.newaircraft（即存储为New_Aircraft 实例的属性）。因此，您可以安全地取消最后一行的注释，因为newaircraft 现在是self 的属性。但是，我会颠倒这两行：首先销毁self.newaircraft，然后销毁self。