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好用的分隔線
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mysep = Separator(root,orient=HORIZONTAL)
mysep.pack(fill=X,padx=25)
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Tkinter 的 widget有個 after好用的method
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label.after(1000,runcounter)
表示一秒後執行 runcounter()
如未加 runcounter, 則可當成 delay(1000),停一秒的意思.
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Label 如何夾帶圖檔: (其它widget類似作法)
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1.case git:
mygif = PhotoImage(file='xxx.gif')
mygif=mygif.zoom(2) ## 放大幾倍
mygif = mygif .subsample(3) ## 縮小
label_gif = Label(root,image=mygif )
label_gif.pack()
2.case jpg:
(1).要 pip install pillow
(2).
from PIL import Image,ImageTk
myimage = Image.open('Lighthouse.jpg')
width=350
height=200
image = image.
resize((width,height),
Image.ANTIALIAS) # pixel 不會灰灰的.
mylighthouse = ImageTk.PhotoImage(image)
# label_jpg = Label(root,image=mylighthouse) ## 只有圖
label_jpg = Label(root,text='demo program to \ncompound left'
, justify='right'
,
compound='left',image=Lighthouse) ## 圖在左,文字在右. 效果很好
label_jpg.pack()
沒justify文字置中
有justify='right'文字切右
3.case icon:
label4=Label(root,bitmap='hourglass',
#compound='left',text='icondemo'
#compound='center',text='icondemo'
compound='top',text='icondemo'
)
label4.pack()
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如何定義button 及bind事件處理程式
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def clickfunc(): <== 應會帶一個event的參數
print('you click me')
btn = Button(root,text='hit me',command=clickfunc)
如何在不同btn傳入不同function , 這個要查一下. 好像有很多種作法
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如何作 button.visible=False 及 button.visible=True
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如用 grid
button.grid(column=0,row=0)
button.
grid_forget()
重新顯示則用原來grid
button.grid(column=0,row=0)
如用 pack 則一樣
button.
pack_forget()
重新顯示則用原來pack
button.pack
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如何改變動態 window 的大小及位置
for i in range(1,100):
position=str(200+i)+'x'+str(200+i)+'+'+str(200+i)+'+'+str(300+i)
##
pos_x 'x'
pos_y +
size_x '+'
size_y position 參數值意義
print(position)
window.geometry(position)
window.update() ## 加這行才會動態顯示.
---------------------------------------------------------------------
label 如何給值及取值:
--------------------------------------------------
給值:
val = StringVar()
val.set('初始值')
lbl1 = Label(root,textvariable=val)
取值:
ans = val.get()
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Entry 如何給值及取值:
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給值:
val2 = StringVar()
val2.set('文字輸入欄初值')
username = Entry(window,
textvariable=val2)
username.pack()
取值:
print('username內容:'+username.get())
或者:
print('username內容:'+val2.get())
val2.get())
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如果 未給變數, 但要給初值時, 要用insert():
password = Entry(window,
show="*")
password.insert(END,'Password')
password.pack()
memo = Entry(window,text='memo')
memo.insert(END, 'default text')
memo.pack()
取值時則一定要用元件名.get()
ans= 'username內容:'+username.get() +'\n'
ans += 'password:'+password.get() +
'\n'
ans += 'memo:'+memo.get()
val.set(ans)
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b.config(relief=SUNKEN) <== 指一般程式所謂的border
SUNKEN / RAISED / GROOVE / RIDGE/ FLAT. 預設值為 RAISED.
