🚀 go-pugleaf

hi

works like a charme,
many thanks!

"Remy Lebeau (TeamB)" <gambit47@yahoo.com> schrieb im Newsbeitrag
news:3e8ddac0$1@newsgroups.borland.com...
>
> "pera" <picka2@gmx.net> wrote in message
> news:3e8dcd32$1@newsgroups.borland.com...
>
> > void __fastcall TForm1::MyOnMessage(MSG& Msg, bool& Handled)
>
> That suggests you're using the TApplication::OnMessage event.  If so, then
> that is not the correct place to intercept the message in this situation.
> As stated earlier, you need to subclass the ListView *directly*, and then
> intercept WM_NOTIFY, not WM_LBUTTONDBLCLK.  A ListView control has a very
> specific notification that is triggered when double-clicking on the
dividers
> of the header control.
>
> This is a snippet of code I use in my own project:
>
>     TWndMethod OldListViewProc;
>
>     __fastcall TForm1::TForm1(TComponent *Owner)
>         : TForm(Owner)
>     {
>         OldListViewProc = ListView1->WindowProc;
>         ListView1->WindowProc = ListViewWindowProc;
>     }
>
>     void __fastcall TForm1::ListViewWindowProc(TMessage &Msg)
>     {
>         if( Msg.Msg == WM_NOTIFY )
>         {
>             const NMHDR *pnmh = (NMHDR*)Msg.LParam;
>             if((pnmh->code == HDN_BEGINTRACKA) || (pnmh->code ==
> HDN_BEGINTRACKW) ||
>                 (pnmh->code == HDN_DIVIDERDBLCLICKA) || (pnmh->code ==
> HDN_DIVIDERDBLCLICKW))
>             {
>                 // do something
>
>                 // if you want to swallow the message from being handled
any
> further:
>                 if( swallow the message )
>                 {
>                     Msg.Result = TRUE;
>                     return;
>                 }
>             }
>         }
>
>         OldListViewProc(Msg);
>     }
>
>
> Gambit
>
>