Python Tkinter -- Chapter 13 value adjustment control (spinbox) method

13.2 Method

Method describe bbox(index) Returns the rectangular boundary of the specified character config(**options) To configure Spinbox Properties of . See Spinbox Attribute specification .delete(first, last=None) Delete the selected text . The beginning is first,last If there is no definition , Only the current character is deleted .get() Get the content of the current control . The return value is a string icursor(index) Move the insertion cursor to the specified position .identify(x, y) Confirm the coordinate point of the input screen , Whether in Spinbox Within the scope of .
(x,y)： Screen coordinate point
Return value ： character string
“buttonup”: up arrow
“buttondown”: Down arrow
“entry”: Input box
None： be not in spinbox Within the scope of .index(index) get index The position of the specified number type .insert(index, string) stay index Insert character at position .insert(INSERT,string) Insert a character at the position of the insertion cursor insert(END,string) Add text invoke(element) call Spinbox The button . Only when “buttonup”,”buttondown”selection_adjust(index) Adjust selection to index Location . If index Has been chosen , No action .selection_clear() Clear selection selection_element(element=None) Choose one element, If this parameter is not set , Returns the currently selected element.
element finger ： up arrow 、 Down arrow 、 Input box

13.2.1 bbox(index)
The return includes index Rectangle of the specified character . Return value bit （x,y,w,h） Four tuples of .

import tkinter as tk
root=tk.Tk()
root.geometry('300x240')
tk.Label(root).pack()
b1=tk.Spinbox(root,from_=110,to=115,width=4)
b1.pack()
print(b1.bbox(2))
root.mainloop()

**13.2.2 config(options)
modify Spinbox Configuration parameters for .
13.2.3 delete(first,last=None)
Delete the contents of the input control . See 6.2.2.
13.2.4 get()
Get the content in the input box . See 6.2.3.
13.2.5 icursor(index)
Move the input cursor to the specified position . See 6.2.4.
13.2.6 identify(x, y)
Confirm the coordinate point of the input screen , Whether in Spinbox Within the scope of .
(x,y)： Screen coordinate point
Return value ： character string
“buttonup”: up arrow
“buttondown”: Down arrow
“entry”: Input box

import tkinter as tk
root=tk.Tk()
root.geometry('300x240')
b1=tk.Spinbox(root,from_=110,to=115,width=14)
b1.pack()
def pos(event):
print(b1.identify(event.x,event.y))
b1.bind('<Button-1>',pos)
root.mainloop()

13.2.7 index(i)
Return location information of numeric type . See 6.2.5.
13.2.8 insert(index, string)
Insert the string at the specified position . See 6.2.6.
13.2.9 invoke(element)
call Spinbox Up arrow button or down arrow button . in other words , Every call invoke(‘buttonup’) perhaps invoke(‘buttondown’) It is equivalent to pressing the up arrow button or down arrow button once , The value in the input box will also change accordingly .

import tkinter as tk
root=tk.Tk()
root.geometry('300x240')
b1=tk.Spinbox(root,from_=10,to=40)
b1.pack()
def invoke():
b1.invoke('buttonup')
b2=tk.Button(root,text='Invoke',command=invoke)
b2.pack()
root.mainloop()

13.2.10 selection_adjust()
Adjust the selection area in the input box . See 6.2.8.
13.2.11 selection_clear()
Clear selection . See 6.2.9.

13.2.12 selection_element(element=None)
Select the specified element . Elements are ：’buttonup’,’buttondown’ as well as ’none’. If there is no input element, Then return the currently selected element . However, the implementation of this method has bug, If you do not enter any parameters , Returns the TclError.