I'm currently learning the Tkinter GUI programming. And I'm stuck in somewhere in multi threading concept. Even though this topic is discussed several times here, I couldn't catch the concept and apply it to my small sample program.
Below is my code:
from PIL import Image, ImageTk
from Tkinter import Tk, Label, BOTH
from ttk import Frame, Style
from Tkinter import *
import time
class Widgets(Frame):
def __init__(self, parent):
Frame.__init__(self, parent)
self.grid()
self.parent = parent
self.initUI(parent)
def initUI(self, parent):
self.parent.title("Count Numbers")
for r in range(10):
self.parent.rowconfigure(r, weight=1)
for c in range(10):
self.parent.columnconfigure(c, weight=1)
self.button1 = Button(parent, text = "count")
self.button1.grid(row = 1, column = 1, rowspan = 1, columnspan = 2, sticky = W+E+N+S )
self.button1["command"] = self.countNum
self.button2 = Button(parent, text = "say Hello")
self.button2.grid(row = 1, column = 7, rowspan = 1, columnspan = 2, sticky = W+E+N+S)
self.button2["command"] = PrintHello(self).helloPrint
def countNum(self):
for i in range(10):
print i
time.sleep(2)
class PrintHello(Frame):
def __init__(self, parent):
Frame.__init__(self, parent)
self.grid()
self.parent = parent
def helloPrint(self):
print "Hello"
def main():
root = Tk()
root.geometry("300x200")
app = Widgets(root)
root.mainloop()
if __name__ == '__main__':
main()
The output is a GUI with 2 buttons- first one prints the numbers and second prints "Hello". But on clicking the first button, the GUI gets frozen while the numbers are getting printed. And while searching for a solution, I found that 'multi threading' may help. But after several attempts, I couldn't apply multi-threading to my sample program given.
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