如何用button调用另一个类并在类之间传递变量？

Question

我想在GUI类之间传递变量。下面，当我显示其他类时，它显示frame，但我无法将Main1 class的数据放到那里。但是，当我试图显示其他类时，它传递了x值（因为它在\uuu init\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

我怎样才能克服这个问题？任何帮助都将不胜感激

import wx

class Main1 (wx.Frame):
    def __init__(self,parent):
        wx.Frame.__init__ ( self, parent )
        self.bSizer1 = wx.BoxSizer( wx.VERTICAL )
        self.Btn1 = wx.Button( self, wx.ID_ANY, u"Btn1", wx.DefaultPosition, wx.DefaultSize, 0 )
        self.bSizer1.Add( self.Btn1, 1, wx.ALL|wx.EXPAND, 5 )
        self.SetSizer( self.bSizer1 )
        self.Btn1.Bind( wx.EVT_BUTTON, self.btn1_f )


    def btn1_f( self, event ):
        print("here 1")
        self.x = 12
        self.y = 30

        a=Other_a(self).Show()
        b=Other_b(self).Show()


class Other_a (wx.Frame):
    def __init__(self, foo):
        wx.Frame.__init__ ( self )
        self.bSizer2 = wx.BoxSizer( wx.VERTICAL )
        self.Btn2 = wx.Button( self, wx.ID_ANY, u"Btn 2", wx.DefaultPosition, wx.DefaultSize, 0 )
        self.bSizer2.Add( self.Btn2, 0, wx.ALL|wx.EXPAND, 5 )
        self.SetSizer( self.bSizer2 )
        self.Btn2.Bind( wx.EVT_BUTTON, self.btn2_f )

        print("here 2")
        print(foo.x)

    def btn2_f(self,foo):
        print("here 3")
        print(foo.y)

class Other_b (wx.Frame):
    def __init__(self,parent):
        wx.Frame.__init__ ( self, parent )
        self.bSizer3 = wx.BoxSizer( wx.VERTICAL )
        self.Btn3 = wx.Button( self, wx.ID_ANY, u"Btn 2", wx.DefaultPosition, wx.DefaultSize, 0 )
        self.bSizer3.Add( self.Btn3, 0, wx.ALL|wx.EXPAND, 5 )
        self.SetSizer( self.bSizer3 )
        self.Btn3.Bind( wx.EVT_BUTTON, self.btn3_f )
        print("here 4")

    def btn3_f(self,event):
        print("here 5")
        print(self.x)


if __name__ == "__main__":
    app = wx.App(False)
    frame = Main1(None)
    frame.Show(True)
    app.MainLoop()

Answer 1

你很接近
一些明智的使用self和parent可以解决您的问题

import wx

class Main1 (wx.Frame):
    def __init__(self,parent):
        wx.Frame.__init__ ( self, parent )
        self.bSizer1 = wx.BoxSizer( wx.VERTICAL )
        self.Btn1 = wx.Button( self, wx.ID_ANY, u"Btn1", wx.DefaultPosition, wx.DefaultSize, 0 )
        self.bSizer1.Add( self.Btn1, 1, wx.ALL|wx.EXPAND, 5 )
        self.SetSizer( self.bSizer1 )
        self.Btn1.Bind( wx.EVT_BUTTON, self.btn1_f )


    def btn1_f( self, event ):
        print("here 1")
        self.x = 12
        self.y = 30

        a=Other_a(parent=self).Show()
        b=Other_b(parent=self).Show()


class Other_a (wx.Frame):
    def __init__(self, parent):
        wx.Frame.__init__ (self,parent)
        self.parent = parent
        self.bSizer2 = wx.BoxSizer( wx.VERTICAL )
        self.Btn2 = wx.Button( self, wx.ID_ANY, u"Btn A 2", wx.DefaultPosition, wx.DefaultSize, 0 )
        self.bSizer2.Add( self.Btn2, 0, wx.ALL|wx.EXPAND, 5 )
        self.SetSizer( self.bSizer2 )
        self.Btn2.Bind( wx.EVT_BUTTON, self.btn2_f )

        print("here 2")
        print(self.parent.x)

    def btn2_f(self,foo):
        print("here 3")
        print(self.parent.y)

class Other_b (wx.Frame):
    def __init__(self,parent):
        wx.Frame.__init__ ( self, parent )
        self.parent = parent
        self.bSizer3 = wx.BoxSizer( wx.VERTICAL )
        self.Btn3 = wx.Button( self, wx.ID_ANY, u"Btn B 2", wx.DefaultPosition, wx.DefaultSize, 0 )
        self.bSizer3.Add( self.Btn3, 0, wx.ALL|wx.EXPAND, 5 )
        self.SetSizer( self.bSizer3 )
        self.Btn3.Bind( wx.EVT_BUTTON, self.btn3_f )
        print("here 4")

    def btn3_f(self,event):
        print("here 5")
        print(self.parent.x)


if __name__ == "__main__":
    app = wx.App(False)
    frame = Main1(None)
    frame.Show(True)
    app.MainLoop()

提供：

python 20190529.py
here 1
here 2
12
here 4
here 3
30
here 5
12

下面是您的代码和上面代码之间的diff：

<         a=Other_a(self).Show()
<         b=Other_b(self).Show()
 -
>         a=Other_a(parent=self).Show()
>         b=Other_b(parent=self).Show()
23,24c23,25
<     def __init__(self, foo):
<         wx.Frame.__init__ ( self )
 -
>     def __init__(self, parent):
>         wx.Frame.__init__ (self,parent)
>         self.parent = parent
26c27
<         self.Btn2 = wx.Button( self, wx.ID_ANY, u"Btn 2", wx.DefaultPosition, wx.DefaultSize, 0 )
 -
>         self.Btn2 = wx.Button( self, wx.ID_ANY, u"Btn A 2", wx.DefaultPosition, wx.DefaultSize, 0 )
32c33
<         print(foo.x)
 -
>         print(self.parent.x)
36c37
<         print(foo.y)
 -
>         print(self.parent.y)
40a42
>         self.parent = parent
42c44
<         self.Btn3 = wx.Button( self, wx.ID_ANY, u"Btn 2", wx.DefaultPosition, wx.DefaultSize, 0 )
 -
>         self.Btn3 = wx.Button( self, wx.ID_ANY, u"Btn B 2", wx.DefaultPosition, wx.DefaultSize, 0 )
50c52
<         print(self.x)
 -
>         print(self.parent.x)

Answer 2

我稍微整理了一下您的代码，现在它将变量从Main1类传递到其他类

主要的问题是根本没有传递变量。代码中的a=Other_a(self).Show()行实际上是将整个frame赋给了Other_a类。如果要传递x和y值，则可以给出一个列表[self.x, self.y]作为Other_a的foo值

然后，在类Other_a的实例a中，需要一行self.foo = foo。为什么？因为您想在__init__方法之外使用foo的值

同样的情况也发生在b和Other_b上

查看here和here以了解有关clases如何在Python中工作的更多详细信息

import wx

class Main1(wx.Frame):
    def __init__(self, parent):
        wx.Frame.__init__(self, parent=parent)
        self.bSizer1 = wx.BoxSizer(wx.VERTICAL)
        self.Btn1 = wx.Button(self, wx.ID_ANY, "Btn1", wx.DefaultPosition, wx.DefaultSize, 0)
        self.bSizer1.Add(self.Btn1, 1, wx.ALL|wx.EXPAND, 5)
        self.SetSizer(self.bSizer1)
        self.Btn1.Bind(wx.EVT_BUTTON, self.btn1_f)


    def btn1_f(self, event):
        print("here 1")
        self.x = 12
        self.y = 30

        a = Other_a([self.x, self.y])
        a.Show()
        b = Other_b(self.x)
        b.Show()


class Other_a(wx.Frame):
    def __init__(self, foo):
        self.foo = foo
        wx.Frame.__init__(self, None)
        self.bSizer2 = wx.BoxSizer(wx.VERTICAL)
        self.Btn2 = wx.Button(self, wx.ID_ANY, "Btn 2a", wx.DefaultPosition, wx.DefaultSize, 0)
        self.bSizer2.Add(self.Btn2, 0, wx.ALL|wx.EXPAND, 5)
        self.SetSizer(self.bSizer2)
        self.Btn2.Bind(wx.EVT_BUTTON, self.btn2_f)

        print("here 2")
        print(self.foo[0])

    def btn2_f(self, event):
        print("here 3")
        print(self.foo[1])

class Other_b(wx.Frame):
    def __init__(self, x):
        self.x = x
        wx.Frame.__init__(self, None)
        self.bSizer3 = wx.BoxSizer(wx.VERTICAL)
        self.Btn3 = wx.Button(self, wx.ID_ANY, "Btn 2b", wx.DefaultPosition, wx.DefaultSize, 0)
        self.bSizer3.Add(self.Btn3, 0, wx.ALL|wx.EXPAND, 5)
        self.SetSizer(self.bSizer3)
        self.Btn3.Bind(wx.EVT_BUTTON, self.btn3_f)
        print("here 4")

    def btn3_f(self, event):
        print("here 5")
        print(self.x)


if __name__ == "__main__":
    app = wx.App(False)
    frame = Main1(None)
    frame.Show(True)
    app.MainLoop()