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About the axlGetParam command

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I want to get the TextBlock attribute by variate.

1. The general situation: OK

p=axlGetParam("paramTextBlock:2")
 p->??
=>
(objType "paramTextBlock" width 0.584 photoWidth
    0.127 name "2" lineSpace 0.991
    height 0.787 charSpace 0.203
)


2.
n=2
p=axlGetParam("paramTextBlock:n")
p->??
=>(objType "paramTextBlock")

3.
procedure( Text(x "n")
axlGetParam("paramTextBlock:x")
)
Text(2)->??
=>(objType "paramTextBlock")

The result of the 2nd and 3rd situation are not correct. why? how can I get it?


Originally posted in cdnusers.org by leonlee

  • The problem is that you are passing a string to the axlGetParam procedure.

    Because "x" is inside of double quotes,  you are passing a string "x" rather than the evaluation of the variable x.

    use sprintf, and I would check to make sure that x is an integer:

    procedure(Text(x)
       when(integerp(x)
          axlGetParam(sprintf(nil "paramTextBlock:%d" x))
       )
    )

    This should return the param or nil (when invalid input).


    Originally posted in cdnusers.org by natebizu

  • Ok.

    It means that I can use sprintf to convert  number type to string type.

    haha, thanks.


    Originally posted in cdnusers.org by leonlee
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