main.py

# sticky notes application
import tkinter
from tkinter import Toplevel, Frame, X, TOP, Label, RIGHT, LEFT, BOTH, Tk
import tkinter.scrolledtext as tkst
from tkinter import messagebox
from tkinter import font

no_of_windows = 1


class StickyNotes(Toplevel):
    def __init__(self, master, **kwargs):
        super().__init__(master, **kwargs)
        self.xclick = 0
        self.yclick = 0

        # master (root) window
        self.overrideredirect(True)
        global no_of_windows
        self.geometry('350x450+' + str(1000+no_of_windows*(-30)
                                       ) + '+' + str(100 + no_of_windows*20))
        self.config(bg='#838383')
        self.attributes('-topmost', 'true')
        self.resizable(True, True)

        # titlebar
        self.titlebar = Frame(self, bg='#F8F796', relief='flat', bd=2)
        self.titlebar.bind('<Button-1>', self.get_pos)
        self.titlebar.bind('<B1-Motion>', self.move_window)
        self.titlebar.pack(fill=X, expand=1, side=TOP)

        self.closebutton = Label(
            self.titlebar, text='X', bg='#F8F7B6', relief='flat')
        self.closebutton.bind('<Button-1>', self.quit_window)
        self.closebutton.pack(side=RIGHT)

        self.newbutton = Label(self.titlebar, text='+',
                               bg='#F8F7B6', relief='flat')
        self.newbutton.pack(side=LEFT)
        self.newbutton.bind('<Button-1>', self.another_window)

        self.mainarea = tkst.ScrolledText(self, bg='#FDFDCA', font=(
            'Comic Sans MS', 14, 'italic'), relief='flat', padx=5, pady=10)
        self.mainarea.pack(fill=BOTH, expand=1)

        no_of_windows += 1

    def get_pos(self, event):
        self.xclick = event.x
        self.yclick = event.y

    def move_window(self, event):
        self.geometry('+{0}+{1}'.format(event.x_root -
                      self.xclick, event.y_root-self.yclick))

    def another_window(self, event):
        StickyNotes(root)

    def quit_window(self, event):
        self.closebutton.config(relief='flat', bd=0)
        if (messagebox.askyesno('Delete Note?', 'Are you sure you want to delete this note?', parent=self)):
            global no_of_windows
            self.destroy()
            no_of_windows -= 1
            if (no_of_windows == 1):
                root.destroy()
            return
        self.closebutton.config(relief='flat', bd=0, bg='#F8F7B6')


root = Tk()
root.withdraw()
# first note start.
sticky = StickyNotes(root)
root.mainloop()