You really need to put a TRIM() around the DBEdit2.text because what happens if someone puts a space in the edit box? It will look blank, but of course it wont be, then you will not have the checkbox enabled.
Jeremy From: delphi-boun...@delphi.org.nz [mailto:delphi-boun...@delphi.org.nz] On Behalf Of Bob Pawley Sent: Wednesday, 28 April 2010 03:51 To: NZ Borland Developers Group - Delphi List Subject: Re: [DUG] Enable CheckBox Hi The following works well and it is simple enough that I can almost understand it. Thanks everyone. Bob if DBEdit2.Text <> '' then DBCheckBox4.Enabled := true else DBCheckBox4.Enabled := false ----- Original Message ----- From: Colin Johnsun <mailto:colin.a...@gmail.com> To: NZ Borland <mailto:delphi@delphi.org.nz> Developers Group - Delphi List Sent: Monday, April 26, 2010 5:53 PM Subject: Re: [DUG] Enable CheckBox Yeah, that was my thinking on the topic too! But you said it much better :) BTW, I'm wondering if Bob, the originator of this thread, wants to chime in and let us know if any of these suggestions helped or not. On 27 April 2010 10:34, Jolyon Smith <jsm...@deltics.co.nz> wrote: Maybe it's just me, but "A doesn't equal B" surely reads more closely to the real meaning than "not (A does equal B)". Apart from anything else, the latter requires parentheses to avoid the compiler getting confused and trying to do : "(Not A) equals (B)". i.e. the latter syntax is also to the compiler less close to the real meaning (since it requires disambiguation). >From a human perspective the scanning is more fluid: A <> B, reads left to right entirely as intended: "A does not equal B". NOT (A = B) on the other hand requires me to read it like a syntax tree parser: "NOT " . (OK, store the fact that I have to logically invert what follows, keep a mental note of parentheses) . then what follows is "( A is equal to B )" , right OK, so "A is equal to B inverted", i.e. A does not equal B. In other words, exactly what is menat literally and clearly when I write. A <> B. But as I say, maybe it's just me. NOT (I think like a computer). ;) _____ _______________________________________________ NZ Borland Developers Group - Delphi mailing list Post: delphi@delphi.org.nz Admin: http://delphi.org.nz/mailman/listinfo/delphi Unsubscribe: send an email to delphi-requ...@delphi.org.nz with Subject: unsubscribe
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