Difference between revisions of "FPC message: Wrong number of parameters specified"

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(Missing @)
Line 10: Line 10:
 
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:
 
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;
 
   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}.

Revision as of 01:38, 2 May 2006

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}.