我正在尝试使用Tkinter制作虚拟键盘。当前，键盘可以工作并且根据用户输入的内容更改颜色。我的大多数按钮都是使用类来缩短代码的。但是，我想在按下某个按钮（按钮称为gone）时破坏整个键盘。但是，当按下按钮时，我得到一个AttributeError。
问题似乎是我无法销毁从类创建的按钮。我如何在不关闭Tkinter窗口的情况下破坏键盘。
这是下面的代码：
import tkinter as tk
txt=""
buttontext=""
messagesinbox=["What colour do you want","What text colour do you want"]
message=messagesinbox[0]
colour="white"
textcolour="black"
count=0
messagecount=0
letters=[["q","w","e","r","t","y","u","i","o","p","a","s","d","f","g","h","j","k","l","z","x","c","v","b","n","m"],["Q","W","E","R","T","Y","U","I","O","P","A","S","D","F","G","H","J","K","L","Z","X","C","V","B","N","M"]]
root=tk.Tk()
class key:
def __init__(self,rowe,columne,text,com):
if count%2==0:
self.text=text
else:
self.text=text.upper()
self.rower=rowe
self.columner=columne
self.colour=colour
self.txtcol=textcolour
self=tk.Button(root, height=1,width=2,fg=self.txtcol,bg=self.colour,text=self.text, command=com)
self.grid(row=rowe,column=columne)
class doublecolumn:
def __init__(self,rowe,columne,text,com):
self.text=text
self.rower=rowe
self.columner=columne
self.colour=colour
self.txtcol = textcolour
if com==0:
self = tk.Button(root, height=2,fg=self.txtcol, width=2,bg=self.colour, text=self.text)
else:
self=tk.Button(root,height=2,fg=self.txtcol,width=2,bg=self.colour, text=self.text,command=com)
self.grid(row=rowe,column=columne, rowspan=2)
class textkey:
def __init__(self,rowe,columne,text,com):
self.text=text
self.rower=rowe
self.columner=columne
self.colour=colour
self.txtcol = textcolour
if com==0:
self = tk.Button(root,fg=self.txtcol, height=1, width=30,bg=self.colour, text=self.text)
else:
self=tk.Button(root,fg=self.txtcol,height=1,width=30,bg=self.colour, text=self.text,command=com)
self.grid(row=rowe,column=columne, columnspan=250)
class fin:
def __init__(self,rowe,columne,text,com):
self.text=text
self.rower=rowe
self.columner=columne
self.colour=colour
self.txtcol = textcolour
if com==0:
self = tk.Button(root,fg=self.txtcol, height=1, width=5,bg=self.colour, text=self.text)
else:
self=tk.Button(root,fg=self.txtcol,height=1,width=5, text=self.text,bg=self.colour,command=com)
self.grid(row=rowe,column=columne, columnspan=2)
def swap():
global messages,messagecount,message,comment
messagecount=messagecount+1
message=messagesinbox[messagecount%2]
comment = textkey(0, 0, message, 0)
def spacebar():
global enter, txt
txt = txt + " "
enter = textkey(1, 0, txt,0)
def backspace():
global enter, txt
length=len(txt)
length=length-1
parta=txt[0:length]
partb=""
txt=parta+partb
enter = textkey(1, 0, txt,0)
def one():
global enter,txt
txt=txt+"1"
enter=textkey(1,0,txt,0)
def two():
global enter,txt
txt=txt+"2"
enter=textkey(1,0,txt,0)
def three():
global enter,txt
txt=txt+"3"
enter=textkey(1,0,txt,0)
def four():
global enter,txt
txt=txt+"4"
enter=textkey(1,0,txt,0)
def five():
global enter,txt
txt=txt+"5"
enter=textkey(1,0,txt,0)
def six():
global enter,txt
txt=txt+"6"
enter=textkey(1,0,txt,0)
def seven():
global enter,txt
txt=txt+"7"
enter=textkey(1,0,txt,0)
def eight():
global enter,txt
txt=txt+"8"
enter=textkey(1,0,txt,0)
def nine():
global enter,txt
txt=txt+"9"
enter=textkey(1,0,txt,0)
def zero():
global enter,txt
txt=txt+"0"
enter=textkey(1,0,txt,0)
def q():
global enter,txt
txt=txt+letters[count%2][0]
enter=textkey(1,0,txt,0)
def w():
global enter,txt
txt=txt+letters[count%2][1]
enter=textkey(1,0,txt,0)
def e():
global enter,txt
txt=txt+letters[count%2][2]
enter=textkey(1,0,txt,0)
def r():
global enter,txt
txt=txt+letters[count%2][3]
enter=textkey(1,0,txt,0)
def t():
global enter,txt
txt=txt+letters[count%2][4]
enter=textkey(1,0,txt,0)
def y():
global enter,txt
txt=txt+letters[count%2][5]
enter=textkey(1,0,txt,0)
def u():
global enter,txt
txt=txt+letters[count%2][6]
enter=textkey(1,0,txt,0)
def i():
global enter,txt
txt=txt+letters[count%2][7]
enter=textkey(1,0,txt,0)
def o():
global enter,txt
txt=txt+letters[count%2][8]
enter=textkey(1,0,txt,0)
def p():
global enter,txt
txt=txt+letters[count%2][9]
enter=textkey(1,0,txt,0)
def a():
global enter, txt
txt = txt + letters[count%2][10]
enter = textkey(1, 0, txt,0)
def s():
global enter, txt
txt = txt + letters[count%2][11]
enter = textkey(1, 0, txt,0)
def d():
global enter, txt
txt = txt + letters[count%2][12]
enter = textkey(1, 0, txt,0)
def f():
global enter, txt
txt = txt + letters[count%2][13]
enter = textkey(1, 0, txt,0)
def g():
global enter, txt
txt = txt + letters[count%2][14]
enter = textkey(1, 0, txt,0)
def h():
global enter, txt
txt = txt + letters[count%2][15]
enter = textkey(1, 0, txt,0)
def j():
global enter, txt
txt = txt + letters[count%2][16]
enter = textkey(1, 0, txt,0)
def k():
global enter, txt
txt = txt + letters[count%2][17]
enter = textkey(1, 0, txt,0)
def l():
global enter, txt
txt = txt + letters[count%2][18]
enter = textkey(1, 0, txt,0)
def z():
global enter, txt
txt = txt + letters[count%2][19]
enter = textkey(1, 0, txt,0)
def x():
global enter, txt
txt = txt + letters[count%2][20]
enter = textkey(1, 0, txt,0)
def c():
global enter, txt
txt = txt + letters[count%2][21]
enter = textkey(1, 0, txt,0)
def v():
global enter, txt
txt = txt + letters[count%2][22]
enter = textkey(1, 0, txt,0)
def b():
global enter, txt
txt = txt + letters[count%2][23]
enter = textkey(1, 0, txt,0)
def n():
global enter, txt
txt = txt + letters[count%2][24]
enter = textkey(1, 0, txt,0)
def m():
global enter, txt
txt = txt + letters[count%2][25]
enter = textkey(1, 0, txt,0)
def hashkey():
global enter, txt
txt = txt + "#"
enter = textkey(1, 0, txt,0)
def capslock():
global count,letts
count=count+1
letts=[key(4,0,"q",q),key(4,1,"w",w),key(4,2,"e",e),key(4,3,"r",r),key(4,4,"t",t),key(4,5,"y",y),key(4,6,"u",u),key(4,7,"i",i),key(4,8,"o",o),key(4,9,"p",p),key(5,0,"a",a),key(5,1,"s",s),key(5,2,"d",d),key(5,3,"f",f),key(5,4,"g",g),key(5,5,"h",h),key(5,6,"j",j),key(5,7,"k",k),key(5,8,"l",l),key(5,9,"#",hashkey),doublecolumn(5,10,"^",capslock),key(6,1,"z",z),key(6,2,"x",x),key(6,3,"c",c),key(6,4,"v",v),key(6,5,"b",b),key(6,6,"n",n),key(6,7,"m",m)]
def destruction():
global letts
for i in range(0,5):
letts[i].destroy()
def finish():
global txt,message,colourchange,textcolour,letts,colour,enter,space,back,done,comment,nums
origincolour=colour
origintext=textcolour
try:
if messagecount%2==0:
letts[0].colour=txt
colour=txt
else:
letts[0].textcolour=txt
textcolour=txt
message=messagesinbox[messagecount%2]
letts=[key(4,0,"q",q),key(4,1,"w",w),key(4,2,"e",e),key(4,3,"r",r),key(4,4,"t",t),key(4,5,"y",y),key(4,6,"u",u),key(4,7,"i",i),key(4,8,"o",o),key(4,9,"p",p),key(5,0,"a",a),key(5,1,"s",s),key(5,2,"d",d),key(5,3,"f",f),key(5,4,"g",g),key(5,5,"h",h),key(5,6,"j",j),key(5,7,"k",k),key(5,8,"l",l),key(5,9,"#",hashkey),doublecolumn(5,10,"^",capslock),key(6,1,"z",z),key(6,2,"x",x),key(6,3,"c",c),key(6,4,"v",v),key(6,5,"b",b),key(6,6,"n",n),key(6,7,"m",m)]
nums=[key(3,0,"1",one),key(3,1,"2",two),key(3,2,"3",three),key(3,3,"4",four),key(3,4,"5",five),key(3,5,"6",six),key(3,6,"7",seven),key(3,7,"8",eight),key(3,8,"9",nine),key(3,9,"0",zero)]
txt=""
enter = textkey(1, 0, txt, 0)
space = textkey(7, 0, "Space", spacebar)
comment=textkey(0,0,message,0)
back=key(6,0,"<",backspace)
done=fin(6,8,"Done",finish)
colourchange = key(3, 10, "?", swap)
except tk.TclError:
message="That is not a valid colour"
colour=origincolour
textcolour=origintext
txt=""
comment = textkey(0, 0, message, 0)
txt=""
enter = textkey(1, 0, txt, 0)
enter=textkey(1,0,"",0)
comment=textkey(0,0,message,0)
letts=[key(4,0,"q",q),key(4,1,"w",w),key(4,2,"e",e),key(4,3,"r",r),key(4,4,"t",t),key(4,5,"y",y),key(4,6,"u",u),key(4,7,"i",i),key(4,8,"o",o),key(4,9,"p",p),key(5,0,"a",a),key(5,1,"s",s),key(5,2,"d",d),key(5,3,"f",f),key(5,4,"g",g),key(5,5,"h",h),key(5,6,"j",j),key(5,7,"k",k),key(5,8,"l",l),key(5,9,"#",hashkey),doublecolumn(5,10,"^",capslock),key(6,1,"z",z),key(6,2,"x",x),key(6,3,"c",c),key(6,4,"v",v),key(6,5,"b",b),key(6,6,"n",n),key(6,7,"m",m)]
nums=[key(3,0,"1",one),key(3,1,"2",two),key(3,2,"3",three),key(3,3,"4",four),key(3,4,"5",five),key(3,5,"6",six),key(3,6,"7",seven),key(3,7,"8",eight),key(3,8,"9",nine),key(3,9,"0",zero)]
space=textkey(7,0,"Space",spacebar)
back=key(6,0,"<",backspace)
done=fin(6,8,"Done",finish)
colourchange=key(3,10,"?",swap)
gone=key(0,0,"<",destruction)
root.mainloop()
答案 0 :(得分：0)
如错误所述，类Key不具有destroy()函数。
您可以在类中添加函数：
class key:
def __init__(self,rowe,columne,text,com):
if count%2==0:
self.text=text
else:
self.text=text.upper()
self.rower=rowe
self.columner=columne
self.colour=colour
self.txtcol=textcolour
# assign to self.button instead of self
self.button=tk.Button(root, height=1,width=2,fg=self.txtcol,bg=self.colour,text=self.text, command=com)
self.button.grid(row=rowe,column=columne)
def destroy(self):
self.button.destroy()
或将Key设为tk.Button的派生类：
class key(tk.Button):
def __init__(self, rowe, columne, text, com):
if count%2 == 1:
text = text.upper()
super().__init__(root, height=1, width=2, fg=textcolour, bg=colour, text=text, command=com)
self.grid(row=rowe, column=columne)