00 Votes

Delphi "is not"-Syntax does not work

Question by Guest | 2013-10-31 at 20:07

I want to do the following with Delphi (negation of is):

if Sender is not TListView then ...

However, this solution is not working. What am I doing wrong? I always get the following error message:

Error: Illegal Expression

I do not want to write something like this:

if Sender is TListView then begin end else ...

But I do not have any other idea.

0Best Answer0 Votes

In Lazarus and Delphi there is no "is not".

Instead, you should use "if not":

if not (Sender is TListView) then ...

That should do it. Writing the "not" directly behind the "if" is only possible in spoken language.
2013-10-31 at 22:23

ReplyPositive Negative

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