tkinter-canvas

问题 I can't seem to get my PIL Image to work on canvas. Code: from Tkinter import* import Image, ImageTk root = Tk() root.geometry('1000x1000') canvas = Canvas(root,width=999,height=999) canvas.pack() image = ImageTk.PhotoImage("ball.gif") imagesprite = canvas.create_image(400,400,image=image) root.mainloop() Error: Traceback (most recent call last): File "C:/Users/Mark Malkin/Desktop/3d Graphics Testing/afdds.py", line 7, in <module> image = ImageTk.PhotoImage("ball.gif") File "C:\Python27\lib

问题 I have a Tkinter Canvas widget (Python 2.7, not 3), and on this Canvas I have different items. If I create a new item that overlaps an old item, It will be in front. How can I now move the old item in front of the newly created one, or even in front of all other items on the Canvas? Example code so far: from Tkinter import * root = Tk() canvas = Canvas(root,width=200,height=200,bg="white") canvas.grid() firstRect = canvas.create_rectangle(0,0,10,10,fill="red") secondRect = canvas.create

问题 Is there a way to convert canvas coordinates to window coordinates in Tkinter? It would be the opposite of converting from window to canvas coordinate, wich is done like this: x = canvas.canvasx(event.x) 回答1: Use the canvasx and canvasy methods, giving an argument of zero, to compute the x/y of the upper left corner of the visible canvas. Then just use math to convert the canvas coordinate to something relative to the window. # upper left corner of the visible region x0 = self.canvas.canvasx

问题 This is a population model so the entries must be integers to be used for calculation. import sys import tkinter from tkinter import* import time global v global popJ popJ = 0 def genInput(): #Allows the user to input the data gen = Tk() gen.wm_title("Data Input") v = IntVar() ent1 = Entry(gen, textvariable = v).pack() ent1Txt = Label(gen, text = 'Input Juvenile Populations') ent1Txt.pack() v2 = StringVar() ent2 = Entry(gen, textvariable = v2) ent2Txt = Label(gen, text = 'Input Adult

问题 Running the python python script below does not show the embedded matplotlib plot. However it also throws no error message. Upon running the script, it is supposed to display a GUI displaying 4 buttons on the left hand side and a realtime graph on the right hand side. The graph receives its input from a text file 'sample_graph_data.txt' , which is in the same directory as the script. What's wrong in the script and how do I make it work? #Script begins here from tkinter import * from tkinter

问题 from tkinter import* root = Tk() shape = Canvas(root) class GUI(): def __init__(self): pass def create_polygon(self, points, colour, posit): try: shape.delete(self.poly) except: pass self.poly = shape.create_polygon(points, colour, posit) self.poly.shape.grid(column=posit[0],row=posit[1]) polygon = GUI() polygon.create_polygon([150,75,225,0,300,75,225,150],'yellow',[1,2]) I'm new to using tkinter and classes but I want to make a very simple class to create a regular polygon. The code in this

问题 I am looking to make the background of the tkinter canvas transparent, but still have Mouse events of the canvas, here is my code, I am on Windows 10, Python 3.6: from tkinter import * import time WIDTH = 500 HEIGHT = 500 LINEWIDTH = 1 TRANSCOLOUR = 'gray' global old old = () tk = Tk() tk.title('Virtual whiteboard') tk.wm_attributes('-transparentcolor', TRANSCOLOUR) canvas = Canvas(tk, width=WIDTH, height=HEIGHT) canvas.pack() canvas.config(cursor='tcross') canvas.create_rectangle(0, 0, WIDTH

问题 I'm working on a simple drawing program that combines Tkinter and Turtle modules. I would like to add an option that the user can draw anything by just using mouse similar to pen widget on Paint. I tried many things, I could not figure out how l can do it.How can l make the turtle draw anything (like pen widget on Paint ) on canvas by using mouse from tkinter import * import turtle sc=Tk() sc.geometry("1000x1000+100+100") fr4=Frame(sc,height=500,width=600,bd=4,bg="light green",takefocus=""

问题 so I have a submarine: from tkinter import * HEIGHT = 500 WIDTH = 800 window = Tk() window.title("Bubble Blaster") c = Canvas(window, width=WIDTH, height=HEIGHT, bg="darkblue") c.pack() ship_id = c.create_polygon(5, 5, 5, 25, 30, 15, fill="red") ship_id2 = c.create_oval(0, 0, 30, 30, outline="red") and Im reading a book on how to make the sub move, this is what it says: def move_ship(event): if event.keysym == "up": c.move(ship_id, 0, -ship_spd) c.move(ship_id2, 0, -ship_spd) elif event

问题 I want to create a line in the Tkinter and after changing the height I need to delete the previous line and create a new line with the new height, this is a repeated process. To this, I read the tutorial of the Tkinter of python and I think the After method might be useful. So, I write my idea but it is not a good method and I cannot create it. Also, I searched about a Shown event in the Tkinter, but I did not find the Shown event in the Tkinter for the window. Here is my suggested code: from