单个按钮多个事件取决于其他按钮背景tkinter

Question

我有一个按钮(B),其功能应取决于其他按钮的单击.假设我有3个可靠的按钮(b1,b2,b3),通过点击它可以改变背景.我使用以下命令为3个按钮更改背景颜色.

B = Button(frame, image=logo, command=data)
b1 = Button(frame, text = "v", command=lambda:b1.config(bg="gray))
b2 = Button(frame, text = "v", command=lambda:b2.config(bg="gray))
b3 = Button(frame, text = "v", command=lambda:b3.config(bg="gray))

因此,当我单击按钮时,背景颜色变为灰色.但是,我想一次只做一个按钮.因此,当我单击一个按钮时,我想将其他按钮更改为前景.通过使用背景颜色,我想编写按钮B命令功能.

我尝试如下,但它没有按我的意愿工作:

def data():
    if b1.configure(bg="gray):
       data1()
    if b2.configure(bg="gray):
       data2()
    if b3.configure(bg="gray):
       data3()
    else:
        print('no data')

def data1():
    as per my requirement 
def data2():
    as per my requirement 
def data3():
     as per my requirement 

但是,尽管点击按钮,我仍然没有数据.

很高兴听到一些建议.

Answer 1

要获得您正在寻找的行为,您需要更改command每个按钮的方法.您可以为每个按钮定义单独的处理程序,如下所示:

b1 = Button(frame, text = "v", command=b1_pressed)
b2 = Button(frame, text = "v", command=b2_pressed)
b3 = Button(frame, text = "v", command=b3_pressed)

def b1_pressed():
    b1.config(bg="gray")
    b2.config(bg="red")  # Or any other color.
    b3.config(bg="red")

def b2_pressed():
    b1.config(bg="red")
    b2.config(bg="gray")
    b3.config(bg="red")

def b3_pressed():
    b1.config(bg="red")
    b2.config(bg="red")
    b3.config(bg="gray")

这是很多重复,所以你可以做的是传递有关按下按钮的信息.

b1 = Button(frame, text = "v", command=lambda: button_pressed(b1))
b2 = Button(frame, text = "v", command=lambda: button_pressed(b2))
b3 = Button(frame, text = "v", command=lambda: button_pressed(b3))

def button_pressed(button):
    for b in [b1, b2, b3]:
        if b is button:
            b.config(bg="gray")
        else:
            b.config(bg="red")

我们需要lambda在那里包装调用,button_pressed以便我们可以传递值(就像你目前在你的例子中为config做的那样).目标函数接受此按钮引用,并将其与可能按钮列表中的每个成员进行比较.如果它匹配,我们将该按钮设置为灰色,如果不匹配,我们将其设置为红色.