Subject Re: Grid search From Mervyn Bick <invalid@invalid.invalid> Date Sun, 27 Sep 2020 11:49:49 +0200 Newsgroups dbase.getting-started On 2020/09/27 11:37, Robbie Nott wrote: > Thanks Mervyn > Wax on - wax off.... > Learn something new every day. > > :-) Mr Myagi had it right. One learns by doing. Please change the form_onClose event handler if you are going to keep this example for future reference.  I forgot to release the callback and this can cause dBASE to quietly fold its tent and steal away.     function form_onClose         UnhookWindowsHookEx(form.hook)         release callback hookWndProc object this         return Mervyn.