[wxPython-users] Subclass XRC & Two stage creation

[Robin Dunn]

甜瓜 wrote:
> Howdy,
>     I'm using wxPython 2.8.7.1 and trying to subclass wx.Hyperlink in
> XRCed. As the guide in wxpywiki, I write the code below which simply
> sets colors:
> 
> class MyHyperlinkCtrl(wx.HyperlinkCtrl):
>     def __init__(self):
>         p = wx.PreHyperlinkCtrl()
>         self.PostCreate(p)
>         self.Bind(wx.EVT_WINDOW_CREATE, self.OnCreate)
> 
>     def OnCreate(self, evt):
>         self.Unbind(wx.EVT_WINDOW_CREATE)
>         self.NormalColour = wx.Color(0, 90, 255)
>         self.HoverColour = wx.Color(0, 90, 255)
>         self.VisitedColour = wx.Color(0, 90, 255)
> 
> But, it is strage that the HyperlinkCtrl still shows up with default
> color. Therefore I am sure something has been done after OnCreate and
> overwrite my color setting. Why?

More likely the OnCreate is not getting called.  There are some widget 
types where the create event will be sent before you have a chance to 
bind the handler.


> My workaround is binding EVT_PAINT instead of EVT_WINDOW_CREATE:

That is fine, and something like this is usually used as the workaround, 
although EVT_SIZE might be a better choice since that will likely happen 
before the first paint event and before the widget is actually visible.

-- 
Robin Dunn
Software Craftsman
http://wxPython.org  Java give you jitters?  Relax with wxPython!