Python 3.x 在选项菜单选择更改后更新标签文本
我的目标是在每次选择选项菜单Python 3.x 在选项菜单选择更改后更新标签文本,python-3.x,tkinter,Python 3.x,Tkinter,我的目标是在每次选择选项菜单w中的新项目时更新标签price的内容。到目前为止,这是我的代码,但它返回的错误我不知道如何修复 class App(Frame): def __init__(self, master=None): Frame.__init__(self, master) Label(master, text="Ore:").grid(row=0) Label(master, text="Price:").grid(row=
w
中的新项目时更新标签price
的内容。到目前为止,这是我的代码,但它返回的错误我不知道如何修复
class App(Frame):
def __init__(self, master=None):
Frame.__init__(self, master)
Label(master, text="Ore:").grid(row=0)
Label(master, text="Price:").grid(row=1)
self.price = Label(master, text="0.00").grid(row=1, column=1)
variable = StringVar(master)
variable.set("Select an ore") # default value
def displayPrice(self):
self.price = orePrice[self.w.get()]
self.w = OptionMenu(master, variable, *orePrice, command=displayPrice).grid(row=0, column=1)
# here is the application variable
self.contents = StringVar()
# set it to some value
self.contents.set("this is a variable")
# tell the entry widget to watch this variable
#self.w.bind('<Button-1>', )
我是Python GUI的新手,因此代码凌乱和/或写得不好。我修改了您的代码。现在,无论何时更改矿石类型,价格字段都会更新:
from tkinter import *
class App(Frame):
def __init__(self, master=None):
Frame.__init__(self, master)
Label(master, text="Ore:").grid(row=0)
Label(master, text="Price:").grid(row=1)
self.priceVar = StringVar()
self.priceVar.set("0.00")
self.price = Label(master, textvariable=self.priceVar).grid(row=1, column=1)
self.orePrice = {'Gold': 300, 'Silver': 50, 'Bronze': 10}
variable = StringVar(master)
variable.set("Select an ore") # default value
self.w = OptionMenu(master, variable, *self.orePrice, command=self.displayPrice).grid(row=0, column=1)
# here is the application variable
self.contents = StringVar()
# set it to some value
self.contents.set("this is a variable")
# tell the entry widget to watch this variable
#self.w.bind('<Button-1>', )
def displayPrice(self, value):
self.priceVar.set(self.orePrice[value])
root = Tk()
app = App(root)
root.mainloop()
从tkinter导入*
类应用程序(框架):
def uuu init uuu(self,master=None):
帧。\uuuu初始化(自,主)
标签(master,text=“Ore:”).grid(行=0)
标签(主标签,text=“Price:”).grid(行=1)
self.priceVar=StringVar()
自定价变量集(“0.00”)
self.price=Label(master,textvariable=self.priceVar).grid(行=1,列=1)
self.orePrice={'Gold':300,'Silver':50,'brown':10}
变量=StringVar(主)
变量.set(“选择矿石”)#默认值
self.w=OptionMenu(master,variable,*self.orePrice,command=self.displayPrice).grid(行=0,列=1)
#下面是应用程序变量
self.contents=StringVar()
#将它设置为某个值
self.contents.set(“这是一个变量”)
#告诉条目小部件监视此变量
#self.w.bind(“”,)
def显示价格(自身、价值):
self.priceVar.set(self.orePrice[value])
root=Tk()
app=app(根目录)
root.mainloop()
from tkinter import *
class App(Frame):
def __init__(self, master=None):
Frame.__init__(self, master)
Label(master, text="Ore:").grid(row=0)
Label(master, text="Price:").grid(row=1)
self.priceVar = StringVar()
self.priceVar.set("0.00")
self.price = Label(master, textvariable=self.priceVar).grid(row=1, column=1)
self.orePrice = {'Gold': 300, 'Silver': 50, 'Bronze': 10}
variable = StringVar(master)
variable.set("Select an ore") # default value
self.w = OptionMenu(master, variable, *self.orePrice, command=self.displayPrice).grid(row=0, column=1)
# here is the application variable
self.contents = StringVar()
# set it to some value
self.contents.set("this is a variable")
# tell the entry widget to watch this variable
#self.w.bind('<Button-1>', )
def displayPrice(self, value):
self.priceVar.set(self.orePrice[value])
root = Tk()
app = App(root)
root.mainloop()