function not declaring default variable value?

[nullschritt]

Hello, I am having a slight problem, do not know if it's an autoit bug or what, but when I try to declare a default value for a function them call it via guictrlsetonevent, the variable is not declared. I have tried pretty much everything I can think of, setting it to default, true, false, numbers, and strings, and it's always the same error.

func _messagego($enckey = "Default")
if not IsDeclared($enckey) Then
$enckey = $activekey
Else

endif
endfunc

 

"Y:SIMNetworkingoutgoing.au3" (4) : ==> Variable used without being declared.:

if not IsDeclared($enckey) Then

if not IsDeclared(^ ERROR

 

[JohnOne]

You can not call a function using parameters

 

Says the help file.

[JohnOne]

I might be totally off here, but just for giggles try this

func _messagego($enckey = "Default")
#forceref $enckey
if not IsDeclared($enckey) Then
$enckey = $activekey
Else

endif
endfunc

[Edano]

func _messagego($enckey)

if not IsDeclared("enckey") Then $enckey = "Default"


endfunc

so it works

Edited July 26, 2013 by Edano

[kylomas]

nullschritt,

Functions can contain no parms, required parms or optional parms.  Optional parms can have a default value.   Autoit provides two ways to say that you want the default value, specify a '-1' or DEFAULT (keyword) for the parm in the calling function.  The only tricky part is that all preceding parameters must be specified in the function call.

Run the following to see if this makes more sense.

_messagego(-1)
_messagego(999)
_messagego(default)
_messagego()

; function is defined with an optional parameter having a default value of 'test'

func _messagego($enckey = 'test')

    if $enckey = -1 or $enckey = default then $enckey = 'test'      ; <--- enforces value specified in func call if user calls with -1 or "default"

    ConsoleWrite($enckey & @LF)

endfunc

kylomas

edit: spelling

Edited July 26, 2013 by kylomas