[wxPython-users] Re: XRC and dynamically created widgets?

[Robin Dunn]

John Salerno wrote:
> John Salerno wrote:
> 
>> self.frame.Bind(wx.EVT_MENU, self.OnNewPage, 
>> id=xrc.XRCID('newRecordMenuItem'))
> 
> One more quickie question: why does this line have to be written this 
> way, with the id keyword argument, instead of like:
> 
> xrc.XCRCTRL(self.XXX, 'new RecordMenuItem')
> 
> Doesn't the Bind() method take a reference to the object as its third 
> parameter? 

Yes, but xrc.XCRCTRL doesn't know how to return a wx.MenuItem, only 
things that derive from wx.Window.  Technically the 3rd parameter can be 
anything that has a GetId() method, and GetId is what is called if it is 
passed, otherwise the value of the id parameter is used to make the 
connection between the source and target of the event.


> And why is the 'id' necessary? It didn't work when I left it 
> out.

Because in this case you want to pass a value for the 4th parameter 
(named 'id') and not the 3rd (named 'source').

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