#!/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. Where is the error?
The main issue was that you forgot to call app.initialize(), but you also had a couple of typos. I've pointed out where in the comments in this fixed version.
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()