我有动态可添加和删除能够输入的字段,我想在主框架内的框架或画布内设置但是当我尝试框架消失或随着输入字段动态增长。如果输入字段超出窗口大小,我希望画布使用滚动条。
from tkinter import *
import tkinter as tk
class Demo2:
def __init__(self, master):
global rows
self.master = master
self.frame = tk.Frame(self.master)
master.title("test")
self.frame.pack()
addboxButton = Button(self.frame, text='<Add Time Input>', fg="Red", command=self.addBox)
addboxButton.pack()
def addBox(self):
def delete():
delboxButton.grid_remove()
ent1.delete(0,END)
ent2.delete(0,END)
ent1.grid_remove()
ent2.grid_remove()
root = self.frame
frame=Frame(root,width=900,height=900)
frame.pack()
canvas=Canvas(frame,bg='#FFFFFF',width=700,height=300,scrollregion=(0,0,700,300))
vbar=Scrollbar(frame,orient=VERTICAL)
vbar.pack(side=RIGHT,fill=Y)
vbar.config(command=canvas.yview)
canvas.config(width=700,height=300)
canvas.config(yscrollcommand=vbar.set)
canvas.pack(side=LEFT,expand=TRUE,fill=BOTH)
i = 0
ent1 = Entry(canvas)
ent1.grid(row=i, column=0,sticky="nsew")
i += 1
i = 0
ent2 = Entry(canvas)
ent2.grid(row=i, column=1,sticky="nsew")
i += 1
delboxButton = Button(canvas, text='delete', fg="Red", command=delete)
delboxButton.grid(row=0 ,column=2)
root = tk.Tk()
root.title("test Complete")
root.geometry("500x500")
app = Demo2(root)
root.mainloop()
答案 0 :(得分:0)
解决此问题的正常方法是创建单个框架并使用canvas create_window
方法将其添加到画布。然后,您可以使用pack
,place
或grid
在框架中放置您想要的任何内容。
有关该技术的说明,请参阅Adding a scrollbar to a group of widgets in Tkinter
这是一个示例,说明该技术如何适用于按钮创建的小部件。我没有包含删除功能或能够正确调整大小以保持示例简短的能力,但您似乎非常清楚如何使删除功能工作,我不知道究竟是什么类型的调整大小你想要的行为。
import tkinter as tk
class Demo2:
def __init__(self, master):
self.master = master
self.entries = []
self.canvas = tk.Canvas(master, width=400, height=200)
self.vsb = tk.Scrollbar(master, orient="vertical", command=self.canvas.yview)
self.canvas.configure(yscrollcommand=self.vsb.set)
self.add_button = tk.Button(master, text="Add", command=self.add)
self.container = tk.Frame()
self.canvas.create_window(0, 0, anchor="nw", window=self.container)
self.add_button.pack(side="top")
self.vsb.pack(side="right", fill="y")
self.canvas.pack(side="left", fill="both", expand=True)
# start with 3 entry widgets
self.add()
self.add()
self.add()
def add(self):
entry = tk.Entry(self.container)
entry.pack(side="top", fill="x")
self.canvas.configure(scrollregion=self.canvas.bbox("all"))
self.entries.append(entry)
root = tk.Tk()
demo = Demo2(root)
root.mainloop()