[wxMac 2.8x] wxWindow::DoGetBestSize bug still not solved

[H]

In article <27lZ_.A.trO.0l6IGB at brage.sunsite.dk>,
 vadim at wxwindows.org (Vadim Zeitlin) wrote:

> On Mon, 16 Apr 2007 18:39:50 +0200 H <H at h.com> wrote:
> 
> H> >  Sorry, I'm getting confusier and confusier. If GetSize() returns (0, 0)
> H> > for hidden windows it definitely isn't fine. So which one is it?
> H> > 
> H> This behaviour sounds logical to me.
> 
>  It's definitely not meant to work like this and it doesn't in the other
> ports and unless I have Stefan's word to the contrary I'll continue to
> believe that it's not intended to work like this in wxMac neither.
> 
> H> I think you mean the correct thing but described it incorrectly: "diff" 
> H> is positive because GetClientSize() becomes negative. And therefore 
> H> positive values are added to "best".
> 
>  Yes, sorry.
> 
> H> That's how it works know!
> 
>  This is a bug.
> 
> H> >  Once again:
> H> > 
> H> > 1. If GetSize() returns (0, 0) for a window with scrollbars this is a 
> bug.
> H> > 2. Independently of this discussion, calling InvalidateBestSize() in
> H> >    DoInsertItem() should help with wxTreebook problem
> H> > 
> H> >  Regards,
> H> > VZ
> H> 
> H> Then, I have to find out why a window with scrollbars ever returns (0, 
> H> 0) when calling GetSize().
> 
>  As I wrote, I suspect that it's just because scrollbars don't yet exist at
> this moment. Could you please try if (2) above helps?
> 
>  TIA,
> VZ

(2) does not help. 

I put it here:

wxTreeItemId wxGenericTreeCtrl::DoInsertItem(const wxTreeItemId& 
parentId,
                                             size_t previous,
                                             const wxString& text,
                                             int image,
                                             int selImage,
                                             wxTreeItemData *data)
{
    this->InvalidateBestSize();
    wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;


Hartwig