GUI_Calculator_Test

# GUI-calculator.py

from tkinter import *
from tkinter import ttk, messagebox

import tkinter.messagebox

GUI = Tk() # T big k small
GUI.title('Catfish')
GUI.geometry('500x800')

bg = PhotoImage(file='Catfish.png')

BG = Label(GUI, image=bg)
BG.pack()

L = Label(GUI,text='Numbers of fish', font=(None,20))
L.pack()

v_quantity = StringVar() # Collect the messange
E1= ttk.Entry(GUI, textvariable=v_quantity, font=(None,20))
E1.pack()


def Cal():
	try:
		quan = float(v_quantity.get())
		calc = quan * 300 #300 baht per 1 Kg
		messagebox.showinfo('Price per 1 Kg','Total Price {} Baht'.format(calc))
		v_quantity.set(' ')
		E1.focus()
	except:
		messagebox.showwarning('Wrong Data','Fill out only number')
		v_quantity.set('1')

B = ttk.Button(GUI, text='Calculate', command=Cal) #Button name
B.pack(ipadx=30,ipady=20) #Button size

GUI.mainloop() # Always RUN





#def Cal():
#	try:
#		quan = float(v_quantity.get())
#		calc = quan * 300 #300 baht per 1 Kg
#		messagebox.showinfo('Price per 1 Kg','Total Price { } Baht'.format(calc))
#		v_quantity.set(' ')
#		E1.focus()
#	except:
#		messagebox.showearning('Wrong Data','Fill out only number')
#		v_quantity.set('1')