[Lazarus] TPageControl bug (or by desing)?

[Felipe Monteiro de Carvalho]

It looks a bug. It should be n in onchanging but n-1 in onchange. But it
would be good to confirm in Delphi.
On Sep 17, 2011 6:00 PM, "Bart" <bartjunk64 at gmail.com> wrote:
> Hi,
>
> The value of PageCount inside TPageControl.DoChange (and therefore in
> the OnChange event) seems wrong (to me), when you remove a page from
> the control.
>
> When I have n pages and then remove 1, in DoChange the value of
> PageCount still is n, when I would expect it to be n-1 at that moment.
> (Tested with Laz r32144).
>
> I stumbled upon this, after hours of digging in entirely the wrong
> place <g>, because in my overriden DoChange I called a method that
> would check for PageCount > 0 and if so it would access a page.
> When I removed the last page, PageCount would still be 1, when in fact
> no more pages existed at that time, so any access to
> Pages[ActivePageIndex] would crash the program.
>
> Is this really a bug, or is it by design?
>
> --
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