10.1Python Graphical User Interface library Tkinter (1): Hello Tkinter__python

The @ Overview TK is a (available for multi-platform) GUI library; Tkinter is the interface of the Python language to access the library and the standard for Python's GUI development;

@ First GUI interface

From tkinter Import *

# Create a program window
= Tk ()

# Create a control instance
lable = Label (
    window,  # parent Container
    text= Hello "  # optional keyword parameters (see source note)
button = button (
    window,  # parent container
    text=" Click Me "  # Optional keyword parameters (see source comment) # to

package the control in the parent container
lable.pack ()
button.pack ()

# dead loop waiting for user action
Window.mainloop () Here to write a code piece

@ Handle Button Events

# Place the button in the window and set its Click event
# create Window
= Tk ()

# Create two instances
Btnok = button (
    window, text= "OK", Foreground= "Red",
    Command=dealbtnok  # button Click event Listener, point to a response function name, do not add (), otherwise syntactically incorrect
)
btncancel = button (
    window, text= "Cancel", background= "Red", 
    command=dealbtncancel 
)

# to package the instance into the parent container
Btnok.pack ()
btncancel.pack ()

# Opens the message (dead) loop (waits for user input)
window.mainloop ()

Button Event Listener function

# Processing button click event
def dealbtnok ():
    print ("Dealbtnok")


# Handle button click event
def dealbtncancel ():
    print (" Dealbtncancel ")

@ Refactoring the above code in an object-oriented way

# Encapsulate window and button events as Class
Eventprocessbutton ():
    # Add Windows and Event Listener
    def __init__ (self) In initialization method: Window
        = Tk ()
        Btnok = button (window, text= "OK", foreground= "Red", Command=self.processbtnok)
        btncancel = button (window, text= " Cancel ", background=" Red ", Command=self.processbtncancel)
        btnok.pack ()
        btncancel.pack
        () Window.mainloop ()
        Pass

    # event listener is also encapsulated in the class
    def Processbtnok (self):
        print ("Processbtnok")
        Pass

    # Event Listening functions are also encapsulated in the class
    def processbtncancel (self):
        print ("Processbtncancel")
        Pass

Create an instance of a class to implement a Window button event listener

Eventprocessbutton ()