Hi Sieghard, Your answer deserves to be applied but my firebird data fields to be sumed are either integer (16,32,64 bits) or numeric (x,y). Numeric (x,y) is compatible with currency Var.
Regards Med ________________________________ De : Sieghard <s_c_...@arcor.de> Envoyé : jeudi 20 mai 2021 10:30 À : mseide-msegui-talk@lists.sourceforge.net <mseide-msegui-talk@lists.sourceforge.net> Objet : Re: [MSEide-MSEgui-talk] BufDataset On Tue, 18 May 2021 11:30:32 -0700 (MST) fredvs <fi...@hotmail.com> wrote: > (But I like your first peace of code too.) Well, let that second piece rest in peace, rather... > For the new code, maybe using a variant variable and create a new > sumfield() procedure: Yes, that might be a more general solution. It's maybe a bit clumsy because of the neccessary _explicit_ coercion conversions, but it will probabely work in all cases, or can be made to do so. > procedure tmsebufdataset.sumfield(const afield: tfield; out asum: > variant); > > But for this, we need a variant-guru (I am beginner in variant type). Well, I'm definitively _not_ one - I even depise variants and avoid them where possible. Variants are really not a data type, at least not a _simple_ one. They are rather complex records containing a variant part for the real data, preceded by a description of what it entails. And this description has to be provided by the issuer, when a variant is built. Although this can be done implicitely by the compiler at times, i.e. if it can predetermine what the variant is meant to contain. -- (Weitergabe von Adressdaten, Telefonnummern u.ä. ohne Zustimmung nicht gestattet, ebenso Zusendung von Werbung oder ähnlichem) ----------------------------------------------------------- Mit freundlichen Grüßen, S. Schicktanz ----------------------------------------------------------- _______________________________________________ mseide-msegui-talk mailing list mseide-msegui-talk@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mseide-msegui-talk
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