Python,按钮列表

2024-09-29 17:09:35 发布

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我遇到了一个将按钮对象放入列表的问题。
我不确定我所要达到的目标是否真的能实现,但这就是。。在

工作样品:

from tkinter import *

class Main(Frame):
    def __init__(self, master = None):
        Frame.__init__(self, master)
        self.pack(fill = 'both', expand = True)

        # General purpose variables     ----------
        self.isButtonSelected = False

        self.isButton_A_Selected = False    # controll boolean
        self.isButton_B_Selected = False
        self.isButton_C_Selected = False
        self.isButton_D_Selected = False

        # Layers                        ----------
        self.background = Frame(self)

        # Buttons                       ----------
        self.button_A = Button(self.background, text = "A", bg = 'white', command = self.selectButton_A)
        self.button_B = Button(self.background, text = "B", bg = 'white', command = self.selectButton_B)
        self.button_C = Button(self.background, text = "C", bg = 'white', command = self.selectButton_C)
        self.button_D = Button(self.background, text = "D", bg = 'white', command = self.selectButton_D)

        # Packs                         ----------
        #layers
        self.background.pack(fill = 'both', expand = True)
        #buttons
        btnPackPrefix = {'side' : 'left', 'fill' : 'both', 'expand' : 'True'}
        self.button_A.pack(btnPackPrefix)
        self.button_B.pack(btnPackPrefix)
        self.button_C.pack(btnPackPrefix)
        self.button_D.pack(btnPackPrefix)

    def selectButton_A(self):
        '''The idea here is similar to radiobuttons.
           Click to select. Click same to deselect.
           Click other to deselect old and select new.
           Only one button can be selected at a time.
               -repeated for all similar methods.'''

        if self.isButtonSelected == False:          # click-select
            self.button_A.config(bg = 'green')
            self.isButtonSelected = True
            self.isButton_A_Selected = True
        else:                                       
            if self.isButton_A_Selected:                # click-deselect
                self.resetButtons()
                self.isButtonSelected = False
            else:                                       # deselect other and select this
                self.resetButtons()
                self.button_A.config(bg = 'green')
                self.isButtonSelected = True
                self.isButton_A_Selected = True

    def selectButton_B(self):
        if self.isButtonSelected == False:
            self.button_B.config(bg = 'green')
            self.isButtonSelected = True
            self.isButton_B_Selected = True
        else:
            if self.isButton_B_Selected:
                self.resetButtons()
                self.isButtonSelected = False
            else:
                self.resetButtons()
                self.button_B.config(bg = 'green')
                self.isButtonSelected = True
                self.isButton_B_Selected = True

    def selectButton_C(self):
        if self.isButtonSelected == False:
            self.button_C.config(bg = 'green')
            self.isButtonSelected = True
            self.isButton_C_Selected = True
        else:
            if self.isButton_C_Selected:
                self.resetButtons()
                self.isButtonSelected = False
            else:
                self.resetButtons()
                self.button_C.config(bg = 'green')
                self.isButtonSelected = True
                self.isButton_C_Selected = True

    def selectButton_D(self):
        if self.isButtonSelected == False:
            self.button_D.config(bg = 'green')
            self.isButtonSelected = True
            self.isButton_D_Selected = True
        else:
            if self.isButton_D_Selected:
                self.resetButtons()
                self.isButtonSelected = False
            else:
                self.resetButtons()
                self.button_D.config(bg = 'green')
                self.isButtonSelected = True
                self.isButton_D_Selected = True

    def resetButtons(self):
        '''this pretty much resets all buttons and controll booleans
           to their default state'''
        #A
        self.button_A.config(bg = 'white')  # paint button white
        self.isButton_A_Selected = False    # controll boolean reset
        #B
        self.button_B.config(bg = 'white')
        self.isButton_B_Selected = False
        #C
        self.button_C.config(bg = 'white')
        self.isButton_C_Selected = False
        #D
        self.button_D.config(bg = 'white')
        self.isButton_D_Selected = False


def run_Application():
    app = Main()
    app.master.geometry('200x50')
    app.mainloop()

run_Application()

正如您所注意到的,我的代码中有许多复制粘贴的片段,每个片段的详细信息都有所更改。
所以我得把它弄短一点。。我需要一个控制所有这些动作的功能
因为它们是相似的。在

我想到了这个。在

非工作样品:

^{pr2}$

我尝试用包含Int属性和
它工作得很好!在

从错误报告中,我知道列出按钮不是一个好主意,如果不是不可能的话。在

我在谷歌上搜索了很多例子或类似的问题,但我没有
有什么好结果吗。在

我还搜索了Python和
弄糊涂了。我想看看是否可以保存一个指向
的变量 但是我认为结果是一样的。。列表将其对象读取为按钮和
引发错误。在

所以,我的问题是:
1有什么办法吗?(显著缩短第一个代码示例。)
2关于列出按钮或窗口小部件:如果可以,怎么做?如果没有,为什么?
三。在第二个代码示例中,我需要按钮命令来包含“i”参数
我的职能部门需要的。这是怎么打出来的?似乎仅仅增加(i)是行不通的。在

提前谢谢!在


Tags: selfconfigfalsetrueifbuttongreenelse
1条回答
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1楼 · 发布于 2024-09-29 17:09:35

看看这行代码:

self.button_A = Button(..., command = self.selectButton(0)) 

发生什么事了?self.selectButton(0)做什么?您正在调用函数self.selectButton(0),然后使用该函数的结果作为command属性的值。这几乎肯定不是你想要的。在

你需要做的是这样的:

^{pr2}$

这将推迟对self.selectButton的调用,直到实际单击该按钮。这将允许创建按钮,如果需要,可以将其分配到列表:

self.buttons = [self.button_A, self.button_B, self.button_C, self.button_D]

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