FPC message: Wrong number of parameters specified

From Lazarus wiki
Revision as of 20:11, 17 July 2015 by FTurtle (talk | contribs)

Deutsch (de) English (en)

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 @ 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}.