[英]Error in gui programming in python using tkinter
#!/usr/bin/python
# -*- coding: iso-8859-1 -*-
import Tkinter
class simpleapp_tk(Tkinter.Tk):
def __init__(self,parent):
Tkinter.Tk.__init__(self,parent)
self.parent=parent
def initialize(self):
self.grid()
self.entry=Tkinter.Entry(self)
self.entry.grid(column=0,row=0,sticky='EW')
self.entry.bind("<Return>",self.OnPressEnter)
button=Tkinter.Button(self,test="Post it!",command=self.OnButtonClick)
button.grid(column=1,row=0)
label=Tkinter.Label(self,anchor="w",fg="white",bg="blue")
label=grid(column=0,row=1,columnspan=2,sticky='EW')
self.grid_columnconfigure(0,weight=1)
def OnButtonClick(self):
print "you clicked the button!"
def OnPressEnter(self,event):
print "you pressed enter!"
if __name__=="__main__":
app=simpleapp_tk(None)
app.title('poster')
app.mainloop()
I wrote this program so as to make a box to input text and a button, but it shows nothing apart from a window. 我编写该程序的目的是为了制作一个框来输入文本和一个按钮,但是除了窗口外,它什么也没有显示。 Where is the error?
错误在哪里?
The main issue was that you forgot to call app.initialize()
, but you also had a couple of typos. 主要问题是您忘记了调用
app.initialize()
,但是您也遇到了一些错字。 I've pointed out where in the comments in this fixed version. 我已经指出了此固定版本中的注释。
import Tkinter
class simpleapp_tk(Tkinter.Tk):
def __init__(self,parent):
Tkinter.Tk.__init__(self,parent)
self.parent=parent
def initialize(self):
self.grid()
self.entry=Tkinter.Entry(self)
self.entry.grid(column=0,row=0,sticky='EW')
self.entry.bind("<Return>",self.OnPressEnter)
button=Tkinter.Button(self,text="Post it!",command=self.OnButtonClick)
# the text keyword argument was mis-typed as 'test'
button.grid(column=1,row=0)
label=Tkinter.Label(self,anchor="w",fg="white",bg="blue")
label.grid(column=0,row=1,columnspan=2,sticky='EW')
# the . in label.grid was mis-typed as '='
self.grid_columnconfigure(0,weight=1)
def OnButtonClick(self):
print "you clicked the button!"
def OnPressEnter(self,event):
print "you pressed enter!"
if __name__=="__main__":
app=simpleapp_tk(None)
app.title('poster')
app.initialize() # you forgot this
app.mainloop()
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