Tkinter of Python GUI development

TK Inter

First window

 from Import *
Tk (). Mainloop ()

The current thread calls Mainloop () and changes into the event loop, and the code behind is blocked.

If you want to create multiple windows

 from Import *fromimport * for in range (5):    Thread (Target= Tk (). Mainloop). Start ()print 2333sys.stdout.flush ()#2333

Create button

The Relxx property represents the relative value of the size of the main window 0~1

 from Import *top=Tk () b=button (top,text='click') b.place ( Relx=0, rely=0.5, relwidth=1, relheight=0.1) Top.mainloop ()

Event handling

 fromTkinterImport*Top=Tk () b=button (top,text='Click') B.place (Relx=0, rely=0.5, Relwidth=1, relheight=0.1)deffoo (event): Btn=Event.widget btn['text']='clicked!'B.bind ('<Button>', foo) Top.mainloop ()

You can also directly bind the callback method when you create the button (top, Command=foo) event callback when there is no event object, cannot operate the trigger button, is not recommended to use.

Tkinter of Python GUI development