wxpython

Question

我正在为学校的一个项目编程，我有点陷入了我无法解决的非常简单的事情。该程序是 BULLS AND COWS 游戏的 GUI。我用数字按钮来做，每次点击每个按钮，都会将所选数字添加到文本框。由于游戏规则，在回合结束之前必须只有 4 个数字，所以我想做的是，如果文本框中已经有 4 个数字，则禁用按钮。这是代码：

import wx
from random import randint

OPTIONS = [1, 2, 3, 4, 5, 6, 7, 8, 9, "DEL", 0, "SEND"]
# these are the events' IDs sent to a function when you click a button.
# the OPTIONS_ID is in the same order of OPTIONS.

OPTIONS_ID = [-31990,-31989,-31988,-31987,-31986,-31985, -31984, -31983, -31982, -31981, -31980, -31979]  # the built in wxpython IDs for the buttons


GAME_POSITION = (400, 100)
GAME_SIZE = [900, 600]

class Frame(wx.Frame):  # class for all the frames in our game.

    def __init__(self, parent, id, title, pos, size):
        wx.Frame.__init__(self, parent, id, title, pos, size)
        self.panel = wx.Panel(self)
        self.fdf = wx.TextCtrl(self.panel, size=(275, 75), pos=(520, 20))
        self.count = 0
        self.check = False
    # this function creates a textbox at a specific position with a specific size.
    def write(self, panel, txt, pos, size=20, font_family=wx.SWISS, font_style = wx.NORMAL,font_weight = wx.BOLD, underline = False):
        # create a textbox at a specific position with a specific size.
        your_txt = wx.StaticText(panel, -1, txt, pos)
        your_txt.SetFont(wx.Font(size,font_family,font_style,font_weight,underline))
    # same as above, just for a button.
    def create_button(self, panel, txt, position, width, height):
        Size = wx.Size(width, height)
        self.button = wx.Button(panel, -1, txt, position, Size)
        self.border = wx.BoxSizer(wx.VERTICAL)
        self.border.Add(self.button)
        self.Bind(wx.EVT_BUTTON, lambda evt: self.OnButton(evt), self.button)
    def create_disable(self, panel, txt, position, width, height):
        Size = wx.Size(width, height)
        self.button = wx.Button(panel, -1, txt, position, Size)
        self.border = wx.BoxSizer(wx.VERTICAL)
        self.border.Add(self.button)
        self.button.Disable()
    def OnButton(self, event):
        print repr(event.Id) + ","
        if event.Id in OPTIONS_ID:  # if indeed an option button was pressed
            exited = -1  # exited is 5100 if the user exited his dialog box
            # assigning the events to the button.
            if event.Id == OPTIONS_ID[0]:  # 1
                self.fdf.AppendText(str(OPTIONS[0]))
                self.count += 1
            elif event.Id == OPTIONS_ID[1]:  # 2
                self.fdf.AppendText(str(OPTIONS[1]))
                self.count += 1
            elif event.Id == OPTIONS_ID[2]:  # 3
                self.fdf.AppendText(str(OPTIONS[2]))
                self.count += 1
            elif event.Id == OPTIONS_ID[3]:  # 4
                self.fdf.AppendText(str(OPTIONS[3]))
                self.count += 1
            elif event.Id == OPTIONS_ID[4]:  # 5
                self.fdf.AppendText(str(OPTIONS[4]))
                self.count += 1
            elif event.Id == OPTIONS_ID[5]:  # 6
                self.fdf.AppendText(str(OPTIONS[5]))
                self.count += 1
            elif event.Id == OPTIONS_ID[6]:  # 7
                self.fdf.AppendText(str(OPTIONS[6]))
                self.count += 1
            elif event.Id == OPTIONS_ID[7]:  # 8
                self.fdf.AppendText(str(OPTIONS[7]))
                self.count += 1
            elif event.Id == OPTIONS_ID[8]:  # 9
                self.fdf.AppendText(str(OPTIONS[8]))
                self.count += 1
            elif event.Id == OPTIONS_ID[9]:  # del
                if self.count > 0:
                    self.count -= 1
                self.fdf.SetValue(self.fdf.GetValue()[:-1])
            elif event.Id == OPTIONS_ID[10]:  # 0
                self.fdf.AppendText(str(OPTIONS[10]))
                self.count += 1
            elif event.Id == OPTIONS_ID[11]:  # send
                self.fdf.AppendText(str(OPTIONS[11]))
            if self.count == 4:
                print "ddd"


class Game(wx.App):
    def OnInit(self):  # upon game opening
        # I would like the options window to be the first window's parent
        # so I will first set up our options window:
        window = Frame(None, -1, "Good Luck!", GAME_POSITION, GAME_SIZE)
        first_panel = window.panel
        window.write(first_panel, "BULLS AND COWS!", (50, 50), size=(35))
        countX = 500
        countY = 100
        for option in OPTIONS:
            window.create_button(first_panel,str(option), (countX, countY), 100, 100)
            countX += 110
            if str(option) == "3" or str(option) == "6" or str(option) == "9":
                countY += 110
                countX = 500



        window.Show(True)
        return True


def main():
    camel = Game()
    camel.MainLoop()


if __name__ == '__main__':
    main()

我试着用计数器变量来做这件事，计数器变量计算每个按钮的点击次数，当他等于 4（这意味着文本框中有 4 个数字）时，就会发生一些事情（在代码中我告诉他无缘无故地打印字符串 "ddd"）。问题是：当有 4 个数字时，如何使按钮禁用（而不是打印 "ddd"）？我知道命令 button.Disable()，但我不知道该把它放在哪里才能让它工作，而且我所有的尝试都失败了。

我希望你能帮助我.. :)

Answer 1

要在计数器达到 4 时禁用所有按钮，请在容器上使用 GetChildren() 方法。在本例中，即 self.panel，它是所有按钮的父级。不过，简单地调用 self.panel.GetChildren() 会给你所有个子项，而不仅仅是按钮。

幸运的是，Python 具有内置函数 isinstance() 来检查对象是否属于给定的 class。为了确保我们只禁用按钮，我们检查 isinstance(button, wx.Button) returns 是否为真，表明该对象确实是 wx.Button.

的实例

将其限制为仅编号的按钮会使它稍微复杂一些，但不会太复杂。只需检查按钮的标签！方法如下：

...
if self.count == 4:
    for child in self.panel.GetChildren():
        if isinstance(child, wx.Button):
            try:
                int(child.GetLabel())
            except ValueError:
                pass
            else:
                child.Disable()
...

首先，我们遍历面板的所有子项。在下一行，我们检查以确保子项实际上是一个按钮，而不是静态文本或类似的东西。最后，我们检查标签是否为整数。如果不是（并且抛出 ValueError），我们忽略它；如果是，我们将其禁用。

希望对您有所帮助！

wxpython - 如果程序中发生某些事情，如何使按钮禁用？

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