wxRichTextCtrl GetStyle() bug?

[Tom Gersic]

Hi,

I think there may be a bug with the wxRichTextCtrl GetStyle() command, 
but I can't quite isolate it. What I'm trying to do is to look at a 
particular location in the text (say, character 40), and check whether 
the wxTEXT_ATTR_URL is set at that location. If it is set, I want to 
find where that flag starts and ends (i.e. the beginning and end of the 
link). So, I'm simply setting up a loop to search for the start position 
of the link:

        //for the purposes of this email, assume that characters 20 
through 50 have wxTEXT_ATTR_URL set
        int startLocation = 40;
        wxRichTextAttr attr;
        daTextCtrl->GetStyle(startLocation, attr);

        while(attr.HasFlag(wxTEXT_ATTR_URL) && startLocation > 0)
        {
            startLocation--;
            daTextCtrl->GetStyle(startLocation, attr);
        }

        wxMessageBox(wxString::Format("%d",startLocation));           

Now, I know for a fact that the link starts at character 20, and extends 
to character 50, so startPosition *should* equal 20, but it always goes 
through the loop exactly once, and comes back with (in this instance) 
19. If I add a watch for attr.HasFlag, it does indeed return true the 
first time and false the second time I check....even if I don't subtract 
1 from startLocation. So, for instance, if I do this twice...

daTextCtrl->GetStyle(startLocation, attr);
attr.HasFlag(wxTEXT_ATTR_URL) ;

...the first time it will return true, and the second time it will 
return false.

What's going on here?

Thanks,
Tom