GUI TKINTER

Event Object

It contains Information about Event.

Event Attributes
<widget	The widget which generated this event. This attribute is set for all events.
x, y	The current mouse position, in pixels.
x_root, y_root	The current mouse position relative to the upper left corner of the screen, in pixels.
keysym	The key symbol (keyboard events only).
keycode	The key code (keyboard events only).

Event Object

A mouse event can be registered by using event name

Methods:
<Button-1>	left mouse button click
<Button-2>	middle mouse button click
<Button-3>	right mouse button click
<ButtonPress-1>	left mouse button Press
<ButtonPress-2>	middle mouse button Press
<ButtonPress-3>	right mouse button Press
<ButtonRelease-1>	left mouse button Release
<ButtonRelease-2>	middle mouse button Release
<ButtonRelease-3>	right mouse button Release
<Motion>	mouse movements
<B1-Motion>	mouse drag pressing left button
<B2-Motion>	mouse drag pressing middle button
<B3-Motion>	mouse drag pressing right button

#To display mouse co-ordinates on mouse button click.

from tkinter import *
class MyFrame(Tk):
  def __init__(self):
    super().__init__()
    self.geometry("500x300")
    self.bind("",self.showpos)
  def showpos(self,e):
    data=str(e.x) +" : "+str(e.y)
    self.title(data)
frm=MyFrame()
frm.mainloop()

#To display circle on mouse click.

from tkinter import *
class MyFrame(Tk):
  def __init__(self):
    super().__init__()
    self.can=Canvas(self,width=500,height=400,bg="white")
    self.can.pack()
    self.can.bind("",self.show)
  def show(self,e):
    lst=[e.x-50,e.y-50,e.x+50,e.y+50]
    self.can.create_oval(lst,outline="red",fill="yellow",width=5)
frm=MyFrame()
frm.mainloop()

#To draw on mouse drag.

from tkinter import *
win = Tk() 
win.geometry('500x400') 
def show(e):
  info=[e.x-15,e.y-15,e.x+15,e.y+15]
  can.create_oval(info,fill="yellow",outline="red")
can=Canvas(win)
can.place(relwidth=1.0,relheight=1.0)
can.bind('<B1-Motion>', show) 
 
win.mainloop()

CCITcoder

Introduction to Python

Conditional statements

Iterative statements

Functions

OOPs

Collection

Module and Exception

DateBase

Inherintance

GUI

Introduction to Python

Conditional statements

Iterative statements

Functions

OOPs

Collection

Module and Exception

DateBase

Inherintance

GUI

GUI TKINTER

Event Object

Event Object