【wxpython】怎么设置快捷键

【wxpython】如何设置快捷键
下面写的只能相应方向键，但我想实现ctrl+方向键，应该怎么写？
self.stringtext.Bind(wx.EVT_KEY_DOWN, self.OnKeyDown) 

def OnKeyDown(self, event):
        keycode = event.GetKeyCode()
        if keycode == wx.WXK_UP:
            self.sizer.Hide(self.bsizer)
            self.SetClientSize((650,40))
        elif keycode == wx.WXK_DOWN:
            self.sizer.Show(self.bsizer)
            self.SetClientSize((650,520))
            self.OpenRead()
        else:
           event.Skip() wxpython 快捷键
[解决办法]
养成习惯自己查文档，wxKeyEvent继承wxKeyboardState，后者有一些你要的相关函数...
http://wxpython.org/Phoenix/docs/html/KeyEvent.html?highlight=keyevent#KeyEvent
http://wxpython.org/Phoenix/docs/html/KeyboardState.html#keyboardstate

def OnKeyDown(self, event):
    keycode = event.GetKeyCode()
    ctrldown = event.ControlDown()
    if keycode == wx.WXK_UP and ctrldown:
    ...