调用事件函数并使用 .bind 使我的画布矩形在光标滚动后显示为灰色

本文介绍了调用事件函数并使用 .bind 使我的画布矩形在光标滚动后显示为灰色 - Tkinter的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

限时送ChatGPT账号..

我需要在光标滑过矩形后使矩形显示为灰色.但我不确定如何做到这一点.我知道这与Enter"功能有关，并且可能将颜色更改为灰色.

I need the rectangles to appear grey after the cursor has been rolled over it. But I am not sure how exactly to do that. I know it has to do with the "Enter" function and maybe changing the colour to grey.

如果有人可以帮助我处理代码位，那就太好了.另外我假设如果我想在一个新级别重复这个过程，我会使用循环计数器吗?谢谢.这是我的画布代码:

If anyone can help me with the code bit that would be great. Also I assume that if I want to repeat this process for a new level would I use a loop counter? Thanks. Here is my code for the Canvas:

canvas = Canvas(PageOne, width=600, height=800)
canvas.pack()

#                                  x1  y1  x2  y2
greenBox = canvas.create_rectangle(40, 60, 90, 110, fill="green")
RedBox = canvas.create_rectangle(110, 60, 160, 110, fill="red")
BlueBox = canvas.create_rectangle(180, 60, 230, 110, fill="blue", activefill="grey")

推荐答案

在以下示例中，当您的鼠标光标第一次悬停在一个矩形上时，其颜色变为灰色:

In the following example, when your mouse cursor hovers over a rectangle for the first time, its color turns to grey:

import tkinter as tk

def turngrey(e):
    canvas.itemconfig('current', fill='grey')

root = tk.Tk()
canvas = tk.Canvas(root, width=600, height=800)
canvas.pack()

greenBox = canvas.create_rectangle(40, 60, 90, 110, fill="green", tags=('turntogrey'))
RedBox = canvas.create_rectangle(110, 60, 160, 110, fill="red", tags=('turntogrey'))
BlueBox = canvas.create_rectangle(180, 60, 230, 110, fill="blue", tags=('turntogrey'))

canvas.tag_bind('turntogrey', '<Enter>', turngrey)

root.mainloop()

这篇关于调用事件函数并使用 .bind 使我的画布矩形在光标滚动后显示为灰色 - Tkinter的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！