Tkinter

We will build a simple GUI small steps at a time. Following code will build and launch a frame (the frame may not focus, so check your task bar)

import tkinter
base = tkinter.Tk()
base.mainloop() #you may need to omit this line in IDLE

tkinter is a module for building graphical user interfaces, packaged with Python distributable. 
Tk() is a top level widget for your application
call mainloop when you are ready for your application to run


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Place a button on the base that will close the base:

import tkinter
import sys

base = tkinter.Tk()
button = tkinter.Button(base, text="close this", command=sys.exit)
button.pack()
base.mainloop()

pack() is a way of placing widgets on the container, we will look at them closer shortly

Show alert on a button click:

import tkinter
from tkinter import messagebox

def helloCallBack():
   messagebox.showinfo( "Hello Python", "Hello World")

base = tkinter.Tk()
button = tkinter.Button(base, text="show message", command=helloCallBack)
button.pack()
base.mainloop()

Change base background colors

import tkinter
from tkinter import messagebox

color1="#CCFFFF"
color2="#CCFFCC"
currentcolor=color1

def changecolor():
	global currentcolor
	if(currentcolor == color1):
		currentcolor = color2
	else:
		currentcolor = color1

	base.configure(bg=currentcolor)
	button.configure(text=currentcolor,highlightbackground=currentcolor ) 


base = tkinter.Tk()
base["bg"]=currentcolor #same can be achieved through base.configure(bg=color1)
base.geometry("500x500") #resize main window
button = tkinter.Button(base, 
	text=currentcolor, 
	command=changecolor, 
	highlightbackground=currentcolor)#frame around the button
button.pack()
base.mainloop()

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