如何在wxpython中收听帧大小/移动更改事件

正确的发布方式是什么。听听wxpython中的尺寸变化事件?

我相信这很简单,但我不知道如何在类之间很好地实现这一点(请原谅任何新手明显的错误)。

我可以使用pypubsub发送事件,但这仅在创建UI类时由侦听器捕获(即侦听一次,而不是在随后调整帧大小时)。

听众:

    # listeners - define before the event
    pub.subscribe(self.on_resized, 'size_changed')
    pub.subscribe(self.on_relocated, 'pos_changed')

出版商:

def on_size(self, event):
    _size = event.GetSize()
    pub.sendMessage('size_changed', size=_size)
    
def on_move(self, event):
    _pos = event.GetPosition()
    pub.sendMessage('pos_changed', pos=_pos)
    

我试过使用CallAfter,但这似乎没有帮助(不太确定我在用它做什么,但认为它可能会在后面调用事件)

def on_size(self, event):
    _size = event.GetSize()
    wx.CallAfter(pub.sendMessage, 'size_changed', size=_size)


def on_move(self, event):
    _pos = event.GetPosition()
    wx.CallAfter(pub.sendMessage, 'pos_changed', pos=_pos)

我还尝试了第二种CallAfter,似乎听了两遍(有进步吗?),但我理解这是由结果断言错误格式化的

def on_size(self, event):
    _size = event.GetSize()
    # test incorrect formatting of call after...
    wx.CallAfter(pub.sendMessage('size_changed', size=_size))

def on_move(self, event):
    _pos = event.GetPosition()
    pub.sendMessage('pos_changed', pos=_pos)

提前感谢您的帮助/指点

最小演示:

import pubsub.pub as pub
import wx


class UI(wx.Frame):
    def __init__(self, *args, **kwargs):

        # init base class
        super().__init__(*args, **kwargs)

        # bindings
        self.Bind(wx.EVT_MOVE, self.on_move)
        self.Bind(wx.EVT_SIZE, self.on_size)

    def on_size(self, event):
        _size = event.GetSize()
        print('[UI] resized to :', _size)
        # broadcast new size
        pub.sendMessage('size_changed', size=_size)
        # wx.CallAfter(pub.sendMessage, 'size_changed', size=_size)

        # test incorrect formatting of call after...
        # wx.CallAfter(pub.sendMessage('size_changed', size=_size))

    def on_move(self, event):
        _pos = event.GetPosition()
        print('[UI] moved to :', _pos)
        # broadcast new location
        pub.sendMessage('pos_changed', pos=_pos)
        # wx.CallAfter(pub.sendMessage, 'pos_changed', pos=_pos)



class CustomFrame(object):

    def __init__(self, parent=None, _id=wx.ID_ANY, title='test'):

        # listeners - define before the event
        pub.subscribe(self.on_resized, 'size_changed')
        pub.subscribe(self.on_relocated, 'pos_changed')

        self._id = _id
        self._ui = UI(parent=parent, id=_id, title=title)
        self._ui.Show()

    def on_resized(self, size):
        print('[CustomFrame] The new size is :=', size)
        # do something with the new size

    def on_relocated(self, pos):
        print('[CustomFrame] The new location is :=', pos)
        # do something with the new position


if __name__ == '__main__':
    app = wx.App()
    CustomFrame(title='Demo')
    app.MainLoop()