Newsgroups: comp.windows.ms.programmer
Path: utzoo!utgpu!watserv1!watmath!hyper.hyper.com!bonneau
From: bonneau@hyper.hyper.com (Paul Bonneau)
Subject: Re: Windows Subclassing
Message-ID: <1991Apr29.190909.12436@hyper.hyper.com>
Keywords: Subclassing edit
Reply-To: bonneau@hyper.UUCP (Paul Bonneau,,)
Organization: HyperCube Inc.
References: <2368@novavax.UUCP>
Date: Mon, 29 Apr 1991 19:09:09 GMT

In article <2368@novavax.UUCP> raab@novavax.UUCP (Moshe Raab) writes:
>
>          case NUMERIC:
>// use numeric control
>          lpfnOldEdit = (FARPROC)GetWindowLong(hDlg,GWL_WNDPROC);
>          SetWindowLong(hDlg, GWL_WNDPROC,(LONG) lpfnNumericProc);
>          break;
>          default:
>          break;
>        }
The problem is that you are subclassing the dialog itself!  Replace
the above GetWindowLong() and SetWindowLong() window handles with
GetDlgItem(hDlg, id).  Also, no need to subclass and unsubclass on
focus changes.  Do it once when the dialog gets WM_INITDIALOG, and
remove subclass (and don't forget to FreeProcInstance()!) on
WM_DESTROY.

cheers - Paul Bonneau.