FPC message: Wrong number of parameters specified
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Missing parameter or too many parameters
You confused the function and forgot a parameter or added a parameter too much.
Missing @
For example:
Button1.Click := Button1Click;In {$mode objfpc} you must add the @-address-operator to tell the compiler, that you want the pointer to the function, not the result of the function:
Button1.Click := @Button1Click;Delphi users often confuse this, because Delphi allows it and adds the @ internally. If you prefer the Delphi syntax you can use {$mode Delphi} instead of {$mode ObjFPC}, or use the mode switch {$modeswitch classicprocvars on}.
From the Free Pascal wiki, page "FPC message: Wrong number of parameters specified", as it stood on 2020-02-16 after a change by Trev, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's Licensing page. If you have concerns about this material, message the admin.
Edited on wiki.freepascal.org by 8 people, 2006–2020
From the official wiki's backup of 26 May 2024: who edited this page there, and when. Edits made there after that date were not recorded, and the earlier versions are not shown here; the main page says why.
| When | Who | What changed |
|---|---|---|
| Mattias2 | ||
| Mattias2 | Missing @ | |
| Swen | (minor) | |
| Chronos | syntaxhighlight | |
| Socke | +Category:Compiler Messages; replace translation template | |
| FTurtle | ||
| Arent | ||
| FTurtle | (minor) | |
| FTurtle | ||
| Kai Burghardt | copymove from FPC message: Wrong number of parameters specified (minor) | |
| Trev | Fixed syntax highlighting; deleted category included in page template (minor) |
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