取消选择 tkinter canvas 按钮

Question

我有一个由 tkinter canvas button 创建的按钮，我绑定了它，这样当我按下它时，它会给我一个“凹陷”的效果和一个值。但是我想给它另一种效果，这样当我再次按下它时，它会恢复正常，即“平坦”。

def press(canvas1, y):
    canvas1.configure(relief="sunken")
    print(y)

canvas = tk.Canvas(root, width=50, height=20, borderwidth=1)
buttonBG1 = canvas.create_rectangle(0, 0, 50, 20, outline="", activefill="#F1F1F1")
buttonTXT1 = canvas.create_text((25, 10), text="button", font=("Calibri", 8))
canvas.tag_bind(buttonBG1, "<ButtonPress-1>", lambda x: press(canvas, 100))
canvas.tag_bind(buttonTXT1, "<ButtonPress-1>", lambda x: press(canvas, 100))

他们的方法是当我第二次按下按钮时，就像释放的效果，但我想按下以释放。

Answer 1

您可以切换按钮的外观值；在这里，我们使用闭包来跟踪状态。

import tkinter as tk


def press(canvas1, y, toggle=('sunken', 'flat'), _turn=[0]):
    canvas1.configure(relief=toggle[_turn[0]])
    _turn[0] = (_turn[0] + 1) % 2
    print(y)


if __name__ == '__main__':


    root = tk.Tk()
    canvas = tk.Canvas(root, width=50, height=20, borderwidth=1)
    canvas.pack(expand=True, fill=tk.BOTH)
    buttonBG1 = canvas.create_rectangle(0, 0, 50, 20, outline="", activefill="#F1F1F1")
    buttonTXT1 = canvas.create_text((25, 10), text="button", font=("Calibri", 8))
    canvas.tag_bind(buttonBG1, "<ButtonPress-1>", lambda x: press(canvas, 100))
    canvas.tag_bind(buttonTXT1, "<ButtonPress-1>", lambda x: press(canvas, 100))

    root.mainloop()

取消选择 tkinter canvas 按钮

deselect tkinter canvas buttons

python

canvas

tkinter

python-3.x

tkinter-canvas