CODEWITHSUNDEEP
pythontkinter
iamjorj
iamjorj

Reputation: 1

tkinter after function doesn't work for me

so i'm very new to coding, i took a tkinter draw program off the internet and wanted to add a change colour function by opening up a new window, having the user input the hex code, then having the window close. However the window isn't even opening up when i add the after function, and just waits 5 seconds showing the button being depressed.

from tkinter import *


root = Tk()

# Create Title
root.title( "Paint App ")

# specify size
root.geometry("500x350")

#set colour
Colour = "#000000"


def changecolour():
    col=Tk()
    Label(col, text= "Enter the new hex code, you have 5 seconds ").grid(column=1,row=0)
    newcol=Entry(col,width=15)
    newcol.grid(column=1,row=1)
    col.after(5000)
    Colour=newcol.get()
    col.destroy()
    

# define function when
# mouse double click is enabled
def paint( event ):
    
    # Co-ordinates.
    x1, y1, x2, y2 = ( event.x - 5 ),( event.y - 5 ), ( event.x + 5 ),( event.y + 5 )
    
    # specify type of display
    w.create_oval( x1, y1, x2,y2, fill = Colour )


# create canvas widget.
w = Canvas(root, width = 400, height = 250)

# call function when double
# click is enabled.
w.bind( "<B1-Motion>", paint )
# create label.
l = Label( root, text = "Click and Drag slowly to draw." )
l.pack()
w.pack()

btn = Button(root, text = 'Change colour', bd = '5', command = changecolour)
btn.place(x= 150,y=300)

mainloop()

Upvotes: 0

Views: 320

Answers (1)

Roland Smith
Roland Smith

Reputation: 43495

Use the built-in colorchooser;

You can try it by running the following command:

python -m tkinter.colorchooser

Use it in your program like this:

from tkinter import colorchooser

def changecolour():
     global Colour
    _, Colour = colorchooser.askcolor(title ="Choose color")

The askcolor function returns two values;

  • An RGB tuple
  • A hex string starting with a #.

Since you only need the latter, I used _, Colour. Also, seeing as you want to change the global variable Colour, you have to mark it as such in changecolour.

Upvotes: 1

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