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

From Lazarus wiki
Jump to navigationJump to search
m
Line 15: Line 15:
 
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]]
+
 
 +
[[Category:Compiler and linker messages]]

Revision as of 21:30, 20 January 2016

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}.