Catalog
Preface ：
One 、 Case counter
1、 design sketch
2、 Code
3、 analysis
Two 、 Effect after tuning
1、 design sketch
edit 2、 Code
3、 analysis
edit 3、 ... and 、 Disguised as a countdown timer
1、 effect
2、 Code
3、 analysis
Four 、 summary
Recently, I occasionally have time to study python Of GUI, And I saw the big tail tkinter, then CSDN The government has also raised its status very high . Then give these reasons .
1、kinter There is an inherent advantage of ： It can be used directly without installation
2、 Compare with wx or Qt Numerous controls and components ,Tk Only a dozen controls can meet almost all application needs
It's really simple , Students with foundation , It took about a 1 You will be able to master it in hours . Ha ha ha , Don't talk much , Get to the point , Let's talk about how today's counter and countdown counter are reversed .
Still use our 3 Point positioning method , design sketch + Code + Analysis to laolaoha .
It's a button plus a moving number , Every time you click the button, you will add 1, The default from the 0 Start . It's so simple and rough ~
from tkinter import *
class MyApp(Tk):
""" Inherit Tk, Create your own desktop application class """
def __init__(self):
""" Constructors """
super().__init__()
self.title(' Click on the counter... Button ')
self.geometry('320x160')
#self.iconbitmap('res/Tk.ico')# Icon , If you don't want to use the default icon, change it
self.counter = IntVar() # Create an integer variable object
self.counter.set(0) # Set its initial value to 0
label = Label(self, textvariable=self.counter, font=("Arial Bold", 50)) # take Label Associated with an integer variable object
label.pack(side='left', expand='yes', fill='both', padx=5, pady=5)
btn = Button(self, text=' Let me have a try ', bg='#90F0F0')
btn.pack(side='right', anchor='center', fill='y', padx=5, pady=5)
btn.bind(sequence='<Button-1>', func=self.on_button) # Binding events and event functions
def on_button(self, evt):
""" The response function of the click button event , evt It's the object of the event """
self.counter.set(self.counter.get() + 1)
if __name__ == '__main__':
app = MyApp()
app.mainloop()
You can customize the initial value , Go up according to the floor you want to go , Ha ha ha
2、 Code from tkinter import *
import time
class MyApp(Tk):
def __init__(self):
super().__init__()
self.title(' This is a counter ')# Set title
self.geometry('380x160')# Set canvas size
self.iconbitmap('res\Tk.ico')# Set the app icon
self.count_num=IntVar()# Create a Intvar Variable
self.count_num.set(a)# The initialization counter is the number of countdowns entered
lable=Label(self,textvariable=self.count_num,font=('Arial Bold',50))
lable.pack(side='left',padx=5,pady=5,fill='both',expand='yes')
bth=Button(self,text=' You look ',bg='#1AA7Ec',fg='white')
bth.pack(side='right',pady=5,ipadx=5,fill='y',anchor='center')
bth.bind(sequence='<Button-1>',func=self.button_on)
def button_on(self,evt):
self.count_num.set(self.count_num.get()+1)
#time.sleep(2)
#self.destroy()
if __name__=='__main__':
a = int(input(" Please enter the initial value of the counter ："))# Define global variables a, Used to save the count
app=MyApp()
app.mainloop()
3、 ... and 、 Disguised as a countdown timer 
from tkinter import *
import time
class MyApp(Tk):
def __init__(self):
super().__init__()
self.title(' This is a countdown timer ')# Set title
self.geometry('480x160')# Set canvas size
self.iconbitmap('res\Tk.ico')# Set the app icon
self.count_num=IntVar()# Create a Intvar Variable
self.count_num.set(a)# The initialization counter is the number of countdowns entered
lable=Label(self,textvariable=self.count_num,font=('Arial Bold',50))
lable.pack(side='left',padx=5,pady=5,fill='both',expand='yes')
bth=Button(self,text=' You look ',bg='#1AA7Ec',fg='white')
bth.pack(side='right',pady=5,ipadx=5,fill='y',anchor='center')
bth.bind(sequence='<Button-1>',func=self.button_on)#Button-1 For left mouse click events
def button_on(self,evt):
global a
if a>0:
self.count_num.set(self.count_num.get()-1)
print(a)
a=a-1
else:
self.count_num.set(' The countdown is over ')
print(' The countdown is over ！！')
#self.sleep()
#self.destroy()
if __name__=='__main__':
a = int(input(" Please enter the countdown number ："))# Define global variables a, Used to save the timing
app=MyApp()
app.mainloop()The above counters are added each time 1, Of course, I can reduce each time 1 了 , For example, we play , discharge PPT The countdown timer is used at the beginning , It seems that the counter can be used to compare the cubs , Study 1-100, Learn to 1, Then click to teach him 2. The modified key code is in button_on Function . Remember to reference global variables a When you remember , add global.
well , Today's sharing is here , When we study , We can draw inferences from one example , In this way, we will find learning suddenly interesting , I hope to make progress every day , backgammon . I wish good , If you don't understand, please leave a message for discussion . Or send me a private message ~
