Re: [boost] Re: Re: Re: GUI library - another one

4 Mar 2004

      Hi

Thorsten Ottosen wrote:
...
Why can't window::container be like
window::contain( const button& b )
{
   b.set_owner( this );
   add(b );
}
button::set_owner( window* w )
{
   owner_->remove( this );
   owner_ = w;
}
It's not always that simple.  In particular, on the Win32 architecture,
changing ownership amounts to

DestroyWindow(hwnd);
hwnd = CreateWindow(TEXT("BUTTON"), label.c_str(), WS_CHILD, 0, 0,
new_owner->get_hwnd(), 0);

and from that point on things start to get complicated.  So I neatly
avoided said complications by drawing a line and saying, "on this side,
widgets don't change owners".

I think it's an acceptable limitation.

Regards
David Turner