我是 Tkinter 編程的新手，并被要求撰寫一個程式，該程式使用按鈕在畫布上繪制多邊形，然后能夠單擊這些多邊形并將其拖動到位。我能夠使用鏈接到“獲取域”按鈕的函式繪制多邊形，并且我已經使用 canvas.tag_bind 到該塊來系結滑鼠點擊以移動多邊形。我的問題是當我單擊并拖動多邊形時，它會移動繪制多邊形的整個畫布。這段代碼中有沒有辦法指定如何只移動多邊形？
#!/usr/bin/python
import re
import sys
import os
import tkinter as tk
HEIGHT = 1200
WIDTH = 1600
def domain_button(canvas):
domain = canvas.create_polygon([420, 100, 420, 100, 420, 175, 420, 175, 380, 175, 380, 120, 420, 120], outline='#000000',fill='#007ECB', width=2, tags="obj1Tag")
canvas.tag_bind(domain,"<Button-1>", drag_start)
canvas.tag_bind(domain,"<B1-Motion>", drag_motion)
def button_hover(e):
button["bg"] = "white"
status_label.config(text="Get Input")
def button_hover_leave(e):
button["bg"] = "grey"
status_label.config(text="")
def button_hover_polygon(label):
status_label.config(text=label)
def button_hover_polygon_leave(e):
status_label.config(text="")
def drag_start(e):
domain = e.widget
domain.startX = e.x
domain.startY = e.y
def drag_motion(e):
domain = e.widget
x = domain.winfo_x() - domain.startX e.x
y = domain.winfo_y() - domain.startY e.y
domain.place(x=x,y=y)
###############Main programme#######################
root = tk.Tk()
canvas = tk.Canvas(root, height=HEIGHT, width=WIDTH, bg='#E7E0E6')
canvas.pack()
frame = tk.Frame(root, bg = '#80c1ff',bd=5)
frame.place(relwidth=1,relheight=1)
###Input box
textBox = tk.Text(frame, font=40)
textBox.place(relx=0.01,rely = 0.05, relwidth=0.4,relheight=0.3)
###Option box
frame2 = tk.Frame(frame, bg = '#D3D3D3')
frame2.place(relx=0.01, rely = 0.45,relheight = 0.35, relwidth = 0.4)
InsertVLDomainButton= tk.Button(frame2,text="insert domain",bg = "grey", command=lambda: domain_button(lower_canvas))
InsertVLDomainButton.place(relx = 0.01, rely = 0.01, relheight = 0.2, relwidth=0.2)
status_label = tk.Label(root, text='test', bd=1)
status_label.place(rely = 0.98, relheight = 0.02, relwidth = 1)
##Big button
button = tk.Button(frame, text = "Go!", bg = "grey", font=40, command=lambda: pipeline(lower_canvas))
button.place(relx=0.1,rely=0.85,relheight=0.1, relwidth=0.2)
button.bind("<Enter>", button_hover)
button.bind("<Leave>", button_hover_leave)
###Results canvas
lower_frame = tk.Frame(root, bg = '#80c1ff', bd=10)
lower_frame.place(relx=0.45, rely=0.05, relwidth=0.55,relheight=0.9)
lower_canvas = tk.Canvas(lower_frame)
lower_canvas.place(relheight=1,relwidth=1)
root.mainloop()
我不確定我是否遺漏了一些明顯的東西。我承認我從在線教程中使用了移動多邊形的功能。
先感謝您！
uj5u.com熱心網友回復：
這里有一些可能對你有用的東西。這是簡單的創建按鈕并拖動它的代碼：
from tkinter import *
from tkinter.dnd import Tester as DragWindow, Icon as Draggable
root = Tk()
root.geometry("800x600")
root.withdraw() # hide root window
# Make the actual main window, which can have draggable objects on.
main = DragWindow(root)
def make_btn():
"""Make a new test button."""
# The functional part of the main window is the canvas.
Draggable('Button').attach(main.canvas)
Button(main.top, text='Create New Button', command=make_btn).pack()
mainloop()
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