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

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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}.
 
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}.
  
[[Category:Compiler Messages]]
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[[Category:Compiler and linker messages]]

Revision as of 21:30, 20 January 2016

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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 @ 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}.