tkinter笔记四

from tkinter import * # get widget classes
from tkinter.messagebox import askokcancel # get canned std dialog
class Quitter(Frame): # subclass our GUI
    def __init__(self, parent=None): # constructor method
        Frame.__init__(self, parent)
        self.pack()
        widget = Button(self, text=‘Quit‘, command=self.quit)
        widget.pack(side=LEFT, expand=YES, fill=BOTH)
    def quit(self):
        ans = askokcancel(‘Verify exit‘, "Really quit?")
        if ans: Frame.quit(self)
if __name__ == ‘__main__‘:
    Quitter().mainloop()

选择窗口颜色

from tkinter import *
from tkinter.colorchooser import askcolor
def setBgColor():
    (triple, hexstr) = askcolor()
    if hexstr:
        print(hexstr)
        print(triple)
        push.config(bg=hexstr)
root = Tk()
push = Button(root, text=‘Set Background Color‘, command=setBgColor)
push.config(height=3, font=(‘times‘, 20, ‘bold‘))
push.pack(expand=YES, fill=BOTH)
root.mainloop()

绑定事件

from tkinter import *
def showPosEvent(event):
    print(‘Widget=%s X=%s Y=%s‘ % (event.widget, event.x, event.y))
def showAllEvent(event):
    print(event)
    for attr in dir(event):
        if not attr.startswith(‘__‘):
            print(attr, ‘=>‘, getattr(event, attr))
def onKeyPress(event):
    print(‘Got key press:‘, event.char)
def onArrowKey(event):
    print(‘Got up arrow key press‘)
def onReturnKey(event):
    print(‘Got return key press‘)
def onLeftClick(event):
    print(‘Got left mouse button click:‘, end=‘ ‘)
    showPosEvent(event)
def onRightClick(event):
    print(‘Got right mouse button click:‘, end=‘ ‘)
    showPosEvent(event)
def onMiddleClick(event):
    print(‘Got middle mouse button click:‘, end=‘ ‘)
    showPosEvent(event)
    showAllEvent(event)
def onLeftDrag(event):
    print(‘Got left mouse button drag:‘, end=‘ ‘)
    showPosEvent(event)
def onDoubleLeftClick(event):
    print(‘Got double left mouse click‘, end=‘ ‘)
    showPosEvent(event)
    tkroot.quit()
tkroot = Tk()
labelfont = (‘courier‘, 20, ‘bold‘) # family, size, style
widget = Label(tkroot, text=‘Hello bind world‘)
widget.config(bg=‘red‘, font=labelfont) # red background, large font
widget.config(height=5, width=20) # initial size: lines,chars
widget.pack(expand=YES, fill=BOTH)
widget.bind(‘<Button-1>‘, onLeftClick) # mouse button clicks
widget.bind(‘<Button-3>‘, onRightClick)
widget.bind(‘<Button-2>‘, onMiddleClick) # middle=both on some mice
widget.bind(‘<Double-1>‘, onDoubleLeftClick) # click left twice
widget.bind(‘<B1-Motion>‘, onLeftDrag) # click left and move
widget.bind(‘<KeyPress>‘, onKeyPress) # all keyboard presses
widget.bind(‘<Up>‘, onArrowKey) # arrow button pressed
widget.bind(‘<Return>‘, onReturnKey) # return/enter key pressed
widget.focus() # or bind keypress to tkroot
tkroot.title(‘Click Me‘)
tkroot.mainloop()