import wx

class MainFrame(wx.Frame):
    def __init__(self, parent, title):
        super(MainFrame, self).__init__(parent, title=title)
        
        kep = wx.Bitmap("valami.png", wx.BITMAP_TYPE_ANY)
        self.bitmapButton = wx.BitmapButton(self, -1, kep)
        self.bitmapButton.Bind(wx.EVT_TOGGLEBUTTON, self.onClickToggle)
        vbox = wx.BoxSizer(wx.VERTICAL)
        vbox.Add(self.bitmapButton)

        self.SetSizer(vbox)
        self.Layout()

        
    def onClickToggle(self, event):
        # eredmény True vagy False
        allapot = event.GetEventObject().GetValue()
        print(allapot)

class SimpleApp(wx.App):
    def OnInit(self):
        self.frame = MainFrame(None, title='váltógomb')
        self.frame.Show()
        return True

app = SimpleApp()
app.MainLoop()